OpenFront Wiki Project - User contributions [en-gb]

SAM Launcher

2026-03-23T19:26:33Z

Rjwut: SAMMissileExecution class in the source code indicates that it won't stop MIRV warheads

[[File:SAM Cover Range.png|thumb|327x327px|The '''S.A.M Launcher''' when it's built. Showing the cover range of each SAM Launcher.]]
The [[SAM Launcher|SAM]] (Surface-to-Air Missile system) is a [[Buildings|Building]] that has the ability to shoot down nearby nukes in a 70 [[Tile]] radius around the building. It can intercept [[Atom Bomb|Atom Bombs]] as well as [[Hydrogen Bomb|Hydrogen Bombs]]. It will not stop [[MIRV|MIRVs]] or their individual warheads.

It can be upgraded since update v24.0 and the upgrades add additional range as of update v27.0<ref>https://github.com/openfrontio/OpenFrontIO/commit/5dde4cc16db5216faccd624ad0a670e85b4c87f1</ref>

== Launching an Intercepting Missile ==
[[File:SAM Stack Comparison.png|thumb|311x311px|Comparison of SAM range based on upgrades compared to [[Hydrogen Bomb]] radius.]]
The SAM will only intercept a missile headed for your territory. When intercepting, the SAM prioritizes [[Hydrogen Bomb|Hydrogen Bombs]] over [[Atom Bomb|Atom Bombs]]. It will prioritize missiles that are closer to it too, but will always prioritize Hydrogen Bombs over Atom Bombs. The SAM has a 7.5 second cooldown<ref>https://github.com/openfrontio/OpenFrontIO/blob/e4686642a0f341b5b3eb17c03f64d22f8a7b9a8a/src/core/execution/SAMLauncherExecution.ts#L25</ref>, in which while it is reloading the icon of the [[SAM Launcher|SAM]] will turn red indicating that it can not intercept a missile at that time.<ref>https://github.com/openfrontio/OpenFrontIO/commit/24f25d677a6f43089fb7aa50c1509a84bf8839a1</ref>

== Price ==
Your first SAM costs 1.5M [[Gold]], and all additional SAMs cost 3M gold.

== Upgrades ==
SAMs can be upgraded by placing an additional SAM on an existing one. This adds an additional missile before having to reload, and in v0.27 the SAM's range is increased when stacked and a preview of this range shown to the player.

The range of a level 1 SAM is 70 [[Tile|Tiles]], and the maximum range of a SAM is 150 tiles. A SAM outreaches a [[Hydrogen Bomb]]'s blast radius at level 5.

The range is calculated with the following formula:

<math>\text{range}(\text{level}) = \text{maxRange} - \frac{480}{level+5}</math>

Meaning that a SAM will never be able to reach a range of exactly 150 tiles.

== Intercepting Missile ==
Once the SAM detects a nuke in its range, it will launch a intercepting missile to try to stop it. The intercepting missile will move towards the target missile until it has reached it.

It will only detect nukes that are close to the ground, meaning they were fired or will land nearby the SAM.

= See also =
* [[Missile Silo]]
* [[Atom Bomb]]
* [[Hydrogen Bomb]]
* [[MIRV]]
* [[Fallout]]

== Sources ==
<references />
[[Category:Buildings]]
[[Category:Combat]]
[[Category:Defense]]

SAM Launcher

2026-03-23T19:15:45Z

Rjwut: /* Intercepting Missile */ Inspection of the code indicates that the 75% interception success chance has been removed

[[File:SAM Cover Range.png|thumb|327x327px|The '''S.A.M Launcher''' when it's built. Showing the cover range of each SAM Launcher.]]
The [[SAM Launcher|SAM]] (Surface-to-Air Missile system) is a [[Buildings|Building]] that has the ability to shoot down nearby nukes in a 70 [[Tile]] radius around the building. It can intercept [[Atom Bomb|Atom Bombs]] as well as [[Hydrogen Bomb|Hydrogen Bombs]], and individual MIRV warheads. It will not stop [[MIRV|MIRVs]].

It can be upgraded since update v24.0 and the upgrades add additional range as of update v27.0<ref>https://github.com/openfrontio/OpenFrontIO/commit/5dde4cc16db5216faccd624ad0a670e85b4c87f1</ref>

== Launching an Intercepting Missile ==
[[File:SAM Stack Comparison.png|thumb|311x311px|Comparison of SAM range based on upgrades compared to [[Hydrogen Bomb]] radius.]]
The SAM will only intercept a missile headed for your territory. When intercepting, the SAM prioritizes [[Hydrogen Bomb|Hydrogen Bombs]] over [[Atom Bomb|Atom Bombs]]. It will prioritize missiles that are closer to it too, but will always prioritize Hydrogen Bombs over Atom Bombs. The SAM has a 7.5 second cooldown<ref>https://github.com/openfrontio/OpenFrontIO/blob/e4686642a0f341b5b3eb17c03f64d22f8a7b9a8a/src/core/execution/SAMLauncherExecution.ts#L25</ref>, in which while it is reloading the icon of the [[SAM Launcher|SAM]] will turn red indicating that it can not intercept a missile at that time.<ref>https://github.com/openfrontio/OpenFrontIO/commit/24f25d677a6f43089fb7aa50c1509a84bf8839a1</ref>

== Price ==
Your first SAM costs 1.5M [[Gold]], and all additional SAMs cost 3M gold.

== Upgrades ==
SAMs can be upgraded by placing an additional SAM on an existing one. This adds an additional missile before having to reload, and in v0.27 the SAM's range is increased when stacked and a preview of this range shown to the player.

The range of a level 1 SAM is 70 [[Tile|Tiles]], and the maximum range of a SAM is 150 tiles. A SAM outreaches a [[Hydrogen Bomb]]'s blast radius at level 5.

The range is calculated with the following formula:

<math>\text{range}(\text{level}) = \text{maxRange} - \frac{480}{level+5}</math>

Meaning that a SAM will never be able to reach a range of exactly 150 tiles.

== Intercepting Missile ==
Once the SAM detects a nuke in its range, it will launch a intercepting missile to try to stop it. The intercepting missile will move towards the target missile until it has reached it.

It will only detect nukes that are close to the ground, meaning they were fired or will land nearby the SAM.

= See also =
* [[Missile Silo]]
* [[Atom Bomb]]
* [[Hydrogen Bomb]]
* [[MIRV]]
* [[Fallout]]

== Sources ==
<references />
[[Category:Buildings]]
[[Category:Combat]]
[[Category:Defense]]

Alliance

2026-03-23T18:45:18Z

Rjwut: Fixed sentences with missing words

'''Alliances''' are a mechanic where players may mutually agree not to [[Combat|attack]] one another.

== Formation ==
To send an alliance request, open the radial menu for the recipient and select the 🤝 option. If another player sends an alliance request to you, an envelope icon (✉️) will appear next to that player's name on the map, and the request will appear in the notification panel with three buttons: '''Focus''', '''Accept''', or '''Reject'''. You can also accept an alliance request by selecting 🤝 from that nation's radial menu. If no response to the alliance request is received within 20 seconds, the request automatically expires. If an alliance request is not accepted, you will not be able to offer another to the same party for 30 seconds.

== During an Alliance ==
While the alliance exists, the two parties to an alliance may not attack one another. The radial menu will change to remove options to attack your alliance partner, and instead provide options to donate [[gold]] or [[troops]]. You may request that your allies attack someone else by opening the target's info panel and selecting the '''🎯Target''' button.

== Ending an Alliance ==
Alliances last for five minutes. When the alliance is 30 seconds away from expiration, an option to renew the alliance will appear in the notification panel. You can accept or reject the renewal opportunity the same way you accept an offer of an alliance. If both parties accept the renewal, the alliance is extended by another five minutes. Otherwise, the alliance is dissolved.

An alliance will also be broken through betrayal; doing so will mark you as a [[traitor]]. You can betray an ally by explicitly breaking the alliance via an option in their radial menu, or by destroying any of their structures or irradiating enough of their territory with a nuke.

== Tribe Behavior ==
[[Tribes]] never offer alliances and always accept alliances they are offered. They will break an alliance in order to attack someone.

== Nation Behavior ==
Nations follow a procedure to determine whether to accept or reject a request to form or extend an alliance:

# Reject alliances during the spawn phase
# Random chance of getting "confused" and randomly accepting or rejecting: 10% chance on Easy [[difficulty]], 5% on Medium, 2.5% on hard, and 0% on Impossible
# Almost always reject alliances with traitors
# On Hard or Impossible difficulties, reject alliances with parties that already have too many alliances with humans or nations: >50% of them on Hard, >25% on Impossible)
# Accept if the other party is a large enough threat
# Reject if it's a team game
# Reject if the relationship with the other party is worse than neutral
# Chance to accept if the relationship with the other party is better than neutral: 100% on Easy or Medium difficulty, 83% on Hard, and 67% on Impossible
# Reject if the nation decides it already has enough alliances
# Chance to accept if it's early in the game: 90% in the first five minutes on Easy difficulty, 70% in the first three minutes on Medium, 50% in the first three minutes on Hard, and 30% in the first minute on Impossible)
# If a decision isn't already made, accept the alliance if the other party's troop count or land control exceeds or is close enough to the nation's own (more leeway on easier difficulties); reject it otherwise.

Nations will betray their alliance partners under any of the following circumstances:

* If the partner is significantly weaker (based solely on number of troops at home on Easy and Normal difficulties, considering troops involved in attacks as well on higher difficulties)
* If the partner is a traitor and isn't significantly stronger
* If the partner is the nation's only neighbor and has less than a third as many troops (only on Normal difficulty or harder)

Communication

2026-03-23T16:42:28Z

Rjwut: /* Emojis Sent by Nations */

'''Communication''' in [[Openfront]] allows players and [[nations]] to send each other emojis, predefined chat messages, and attack intents in order to plan for attack, defense, and ultimately the win.
== Sending Emojis ==
Players can send emojis to other humans or nations. Emojis sent between humans has no effect on the game itself. Sending certain emojis to a nation can affect the relationship score with them:

{| class="wikitable"
!Emoji Sent
!Score Change
|-
| 🕊️, 🏳️, ❤️, 🥰, or 👏
| +15 (easy mode only)
|-
| 🤡
| -10
|-
| 🖕
| -100
|}

== Emojis Sent by Nations ==
The table below lists game events to which a nation might respond with an emoji, and the possible emojis they might send. Note that a nation is not guaranteed to send an emoji in response to an event; many of them have a random chance of being sent, and they're limited to sending emojis no faster than once per 300 ticks.

{| class="wikitable"
!Response
!Causal Event
!Possible Emoji Responses
|-
| rowspan="2" | Overwhelmed
| Being [[MIRV]]ed
| rowspan="2" | 💀🆘😱🥺😭😞🫡👋
|-
| Under attack by overwhelming forces
|-
| Unimpressed
| Attacked by a human with a tiny force
| ❓🤡🥱
|-
| Congratulations
| A team or human player wins
| 👏
|-
| Brag
| A nation controls the most tiles
| 👑🥇💪
|-
| Charm allies
| Sent occasionally to a human ally
| ❤️😊🥰🤝😇💪
|-
| Annoy traitors
| Sent occasionally to a non-friendly human traitor
| 🤡
|-
| Taunt the pipsqueak
| A human player owns less than 1% of the total land area after 10 minutes
| 🐀
|-
| Hello
| During the first minute of the game
| 👋
|-
| Insulted
| Received 🖕
| 🖕😡🤡😞😭
|-
| rowspan="4" | Confused
| Received 🤡
| rowspan="4" | ❓🤡
|-
| Received 🕊️, 🏳️, ❤️, 🥰, or 👏 when relationship is bad
|-
| Rejected alliance request from traitor
|-
| Rejected alliance request because relationship bad
|-
| rowspan="4" | Love
| Received 🕊️, 🏳️, ❤️, 🥰, or 👏 when relationship is neutral or better
| rowspan="4" | ❤️😊🥰
|-
| Received gold donation worth at least 50 relationship points
|-
| Received troop donation large enough to improve relationship
|-
| Accepted alliance request because you are a threat
|-
| OK
| Received gold donation worth more than 0 relationship points but less than 50
| 👍
|-
| Too small
| Received gold or troop donation too small to improve relationship
| ❓🥱
|-
| Warship retaliation
| Retaliated to trade/transport ship being destroyed by building warship
| ⛵
|-
| Nuke
| Fired a [[nuke]]
| ☢️💥
|-
| Scared
| Offered alliance request because you are a threat
| 🙏🥺
|-
| Handshake
| Offered or accepted alliance request because relationship is good
| 🤝
|-
| We're not friends
| Refused assistance request because relationship is bad
| 🥱🤦‍♂️
|-
| Are you kidding?
| Refused assistance request because target is self
| 🥺💀
|-
| Won't attack allies
| Refused assistance request because target is ally
| 🕊️👎
|-
| I will assist
| Accepted assistance request
| 👍🤝🎯
|-
| Aggressive attack
| Attacked human while relations are good (probably attacked first)
| 😈
|-
| Attack
| Attacked human while relations are not good (probably retaliating)
| 😡
|}

Alliance

2026-03-23T16:40:09Z

Rjwut: /* Nation Behavior */ Clarification

'''Alliances''' are a mechanic where players may mutually agree not to [[Combat|attack]] one another.

== Formation ==
To send an alliance request, open the radial menu for the recipient select the 🤝 option. If another player sends an alliance request to you, an envelope icon (✉️) will appear next to that player's name on the map, and the request will appear in the notification panel with three buttons: '''Focus''', '''Accept''', or '''Reject'''. You can also accept an alliance request by selecting 🤝 from that nation's radial menu. If no response to the alliance request is received within 20 seconds, the request automatically expires. If an alliance request is not accepted, you will not be able to offer another to the same party for 30 seconds.

== During an Alliance ==
While the alliance exists, the two parties to an alliance may not attack one another. The radial menu will change to remove options to attack your alliance partner, and instead provide options to donate [[gold]] or [[troops]]. You may request that your allies attack someone else by opening the target's info panel and selecting the '''🎯Target''' button.

== Ending an Alliance ==
Alliances last for five minutes. When the alliance is 30 seconds away from expiration, an option to renew the alliance will appear in the notification panel. You can accept or reject the renewal opportunity the same way you accept an offer of an alliance. If both parties accept the renewal, the alliance is extended by another five minutes. Otherwise, the alliance is dissolved.

An alliance will also be broken through betrayal; doing so will mark you as a [[traitor]]. You can betray an ally by explicitly breaking the alliance via an option in their radial menu, or by destroying any of their structures or irradiating enough of their territory with a nuke.

== Tribe Behavior ==
Tribes never offer alliances and always accept alliances they are offered. They will break an alliance in order to attack someone.

== Nation Behavior ==
Nations follow a procedure to determine whether to accept or reject a request to form or extend an alliance:

# Reject alliances during the spawn phase
# Random chance of getting "confused" and randomly accepting or rejecting: 10% chance on Easy [[difficulty]], 5% on Medium, 2.5% on hard, and 0% on Impossible
# Almost always reject alliances with traitors
# On Hard or Impossible difficulties, reject alliances with parties that already have too many alliances with humans or nations: >50% of them on Hard, >25% on Impossible)
# Accept if the other party is a large enough threat
# Reject if it's a team game
# Reject if the relationship with the other party is worse than neutral
# Chance to accept if the relationship with the other party is better than neutral: 100% on Easy or Medium difficulty, 83% on Hard, and 67% on Impossible
# Reject if the nation decides it already has enough alliances
# Chance to accept if it's early in the game: 90% in the first five minutes on Easy difficulty, 70% in the first three minutes on Medium, 50% in the first three minutes on Hard, and 30% in the first minute on Impossible)
# If a decision isn't already made, accept the alliance if the other party's troop count or land control exceeds or is close enough to the nation's own (more leeway on easier difficulties); reject it otherwise.

Nations will betray their alliance partners under any of the following circumstances:

* If the partner is (based solely on number of troops at home on Easy and Normal difficulties, considering troops involved in attacks as well on higher difficulties)
* If the partner is a traitor and isn't significantly stronger
* If the partner is the nation's only neighbor and has less than a third as many troops (only on Normal difficulty or harder)

Alliance

2026-03-23T16:37:03Z

Rjwut: Duplicate information

'''Alliances''' are a mechanic where players may mutually agree not to [[Combat|attack]] one another.

== Formation ==
To send an alliance request, open the radial menu for the recipient select the 🤝 option. If another player sends an alliance request to you, an envelope icon (✉️) will appear next to that player's name on the map, and the request will appear in the notification panel with three buttons: '''Focus''', '''Accept''', or '''Reject'''. You can also accept an alliance request by selecting 🤝 from that nation's radial menu. If no response to the alliance request is received within 20 seconds, the request automatically expires. If an alliance request is not accepted, you will not be able to offer another to the same party for 30 seconds.

== During an Alliance ==
While the alliance exists, the two parties to an alliance may not attack one another. The radial menu will change to remove options to attack your alliance partner, and instead provide options to donate [[gold]] or [[troops]]. You may request that your allies attack someone else by opening the target's info panel and selecting the '''🎯Target''' button.

== Ending an Alliance ==
Alliances last for five minutes. When the alliance is 30 seconds away from expiration, an option to renew the alliance will appear in the notification panel. You can accept or reject the renewal opportunity the same way you accept an offer of an alliance. If both parties accept the renewal, the alliance is extended by another five minutes. Otherwise, the alliance is dissolved.

An alliance will also be broken through betrayal; doing so will mark you as a [[traitor]]. You can betray an ally by explicitly breaking the alliance via an option in their radial menu, or by destroying any of their structures or irradiating enough of their territory with a nuke.

== Tribe Behavior ==
Tribes never offer alliances and always accept alliances they are offered. They will break an alliance in order to attack someone.

== Nation Behavior ==
Nations follow a procedure to determine whether to accept or reject a request to form or extend an alliance:

# Reject alliances during the spawn phase
# Random chance of getting "confused" and randomly accepting or rejecting: 10% chance on Easy [[difficulty]], 5% on Medium, 2.5% on hard, and 0% on Impossible
# Almost always reject alliances with traitors
# On Hard or Impossible difficulties, reject alliances with parties that already have too many alliances with humans or nations: >50% of them on Hard, >25% on Impossible)
# Accept if the other party is a large enough threat
# Reject if it's a team game
# Reject if the relationship with the other party is worse than neutral
# Chance to accept if the relationship with the other party is better than neutral: 100% on Easy or Medium difficulty, 83% on Hard, and 67% on Impossible
# Reject if the nation decides it already has enough alliances
# Chance to accept if it's early in the game: 90% in the first five minutes on Easy difficulty, 70% in the first three minutes on Medium, 50% in the first three minutes on Hard, and 30% in the first minute on Impossible)
# If a decision isn't already made, accept the alliance if the other party's troop count or land control exceeds or is close enough to the nation's own (more leeway on easier difficulties).

Nations will betray their alliance partners under any of the following circumstances:

* If the partner is (based solely on number of troops at home on Easy and Normal difficulties, considering troops involved in attacks as well on higher difficulties)
* If the partner is a traitor and isn't significantly stronger
* If the partner is the nation's only neighbor and has less than a third as many troops (only on Normal difficulty or harder)

Alliance

2026-03-23T16:36:36Z

Rjwut: Explanation of alliances

'''Alliances''' are a mechanic where players may mutually agree not to [[Combat|attack]] one another. Alliances last for five minutes by default.

== Formation ==
To send an alliance request, open the radial menu for the recipient select the 🤝 option. If another player sends an alliance request to you, an envelope icon (✉️) will appear next to that player's name on the map, and the request will appear in the notification panel with three buttons: '''Focus''', '''Accept''', or '''Reject'''. You can also accept an alliance request by selecting 🤝 from that nation's radial menu. If no response to the alliance request is received within 20 seconds, the request automatically expires. If an alliance request is not accepted, you will not be able to offer another to the same party for 30 seconds.

== During an Alliance ==
While the alliance exists, the two parties to an alliance may not attack one another. The radial menu will change to remove options to attack your alliance partner, and instead provide options to donate [[gold]] or [[troops]]. You may request that your allies attack someone else by opening the target's info panel and selecting the '''🎯Target''' button.

== Ending an Alliance ==
Alliances last for five minutes. When the alliance is 30 seconds away from expiration, an option to renew the alliance will appear in the notification panel. You can accept or reject the renewal opportunity the same way you accept an offer of an alliance. If both parties accept the renewal, the alliance is extended by another five minutes. Otherwise, the alliance is dissolved.

An alliance will also be broken through betrayal; doing so will mark you as a [[traitor]]. You can betray an ally by explicitly breaking the alliance via an option in their radial menu, or by destroying any of their structures or irradiating enough of their territory with a nuke.

== Tribe Behavior ==
Tribes never offer alliances and always accept alliances they are offered. They will break an alliance in order to attack someone.

== Nation Behavior ==
Nations follow a procedure to determine whether to accept or reject a request to form or extend an alliance:

# Reject alliances during the spawn phase
# Random chance of getting "confused" and randomly accepting or rejecting: 10% chance on Easy [[difficulty]], 5% on Medium, 2.5% on hard, and 0% on Impossible
# Almost always reject alliances with traitors
# On Hard or Impossible difficulties, reject alliances with parties that already have too many alliances with humans or nations: >50% of them on Hard, >25% on Impossible)
# Accept if the other party is a large enough threat
# Reject if it's a team game
# Reject if the relationship with the other party is worse than neutral
# Chance to accept if the relationship with the other party is better than neutral: 100% on Easy or Medium difficulty, 83% on Hard, and 67% on Impossible
# Reject if the nation decides it already has enough alliances
# Chance to accept if it's early in the game: 90% in the first five minutes on Easy difficulty, 70% in the first three minutes on Medium, 50% in the first three minutes on Hard, and 30% in the first minute on Impossible)
# If a decision isn't already made, accept the alliance if the other party's troop count or land control exceeds or is close enough to the nation's own (more leeway on easier difficulties).

Nations will betray their alliance partners under any of the following circumstances:

* If the partner is (based solely on number of troops at home on Easy and Normal difficulties, considering troops involved in attacks as well on higher difficulties)
* If the partner is a traitor and isn't significantly stronger
* If the partner is the nation's only neighbor and has less than a third as many troops (only on Normal difficulty or harder)

Communication

2026-03-23T14:39:34Z

Rjwut: /* Emojis Sent by Nations */ Heading adjustment

'''Communication''' in [[Openfront]] allows players and [[nations]] to send each other emojis, predefined chat messages, and attack intents in order to plan for attack, defense, and ultimately the win.
== Sending Emojis ==
Players can send emojis to other humans or nations. Emojis sent between humans has no effect on the game itself. Sending certain emojis to a nation can affect the relationship score with them:

{| class="wikitable"
!Emoji Sent
!Score Change
|-
| 🕊️, 🏳️, ❤️, 🥰, or 👏
| +15 (easy mode only)
|-
| 🤡
| -10
|-
| 🖕
| -100
|}

== Emojis Sent by Nations ==
The table below lists game events to which a nation might respond with an emoji, and the possible emojis they might send. Note that a nation is not guaranteed to send an emoji in response to an event; many of them have a random chance of being sent, and they're limited to sending emojis no faster than once per 300 ticks.

{| class="wikitable"
!Response
!Causal Event
!Possible Emoji Responses
|-
| rowspan="2" | Overwhelmed
| Being [[MIRV]]ed
| rowspan="2" | 💀🆘😱🥺😭😞🫡👋
|-
| Under attack by overwhelming forces
|-
| Unimpressed
| Attacked by a human with a tiny force
| ❓🤡🥱
|-
| Congratulations
| A team or human player wins
| 👏
|-
| Brag
| A nation controls the most tiles
| 👑🥇💪
|-
| Charm allies
| Sent occasionally to a human ally
| ❤️😊🥰🤝😇💪
|-
| Annoy traitors
| Sent occasionally to a non-friendly human traitor
| 🤡
|-
| Taunt the pipsqueak
| A human player owns less than 1% of the total land area after 10 minutes
| 🐀
|-
| Hello
| During the first minute of the game
| 👋
|-
| Insulted
| Received 🖕
| 🖕😡🤡😞😭
|-
| rowspan="4" | Confused
| Received 🤡
| rowspan="4" | ❓🤡
|-
| Received 🕊️, 🏳️, ❤️, 🥰, or 👏 when relationship is bad
|-
| Rejected alliance request from traitor
|-
| Rejected alliance request because relationship bad
|-
| rowspan="4" | Love
| Received 🕊️, 🏳️, ❤️, 🥰, or 👏 when relationship is neutral or better
| rowspan="4" | ❤️😊🥰
|-
| Received gold donation worth at least 50 relationship points
|-
| Received troop donation large enough to improve relationship
|-
| Accepted alliance request because you are a threat
|-
| OK
| Received gold donation worth more than 0 relationship points but less than 50
| 👍
|-
| Too small
| Received gold or troop donation too small to improve relationship
| ❓🥱
|-
| Warship retaliation
| Retaliated to trade/transport ship being destroyed by building warship
| ⛵
|-
| Nuke
| Fired a ballistic weapon
| ☢️💥
|-
| Scared
| Offered alliance request because you are a threat
| 🙏🥺
|-
| Handshake
| Offered or accepted alliance request because relationship is good
| 🤝
|-
| We're not friends
| Refused assistance request because relationship is bad
| 🥱🤦‍♂️
|-
| Are you kidding?
| Refused assistance request because target is self
| 🥺💀
|-
| Won't attack allies
| Refused assistance request because target is ally
| 🕊️👎
|-
| I will assist
| Accepted assistance request
| 👍🤝🎯
|-
| Aggressive attack
| Attacked human while relations are good (probably attacked first)
| 😈
|-
| Attack
| Attacked human while relations are not good (probably retaliating)
| 😡
|}

Communication

2026-03-23T07:18:38Z

Rjwut: /* Emojis Sent by Nations */ Tense consistency

'''Communication''' in [[Openfront]] allows players and [[nations]] to send each other emojis, predefined chat messages, and attack intents in order to plan for attack, defense, and ultimately the win.
{{stub}}

== Sending Emojis ==
Players can send emojis to other humans or nations. Emojis sent between humans has no effect on the game itself. Sending certain emojis to a nation can affect the relationship score with them:

{| class="wikitable"
!Emoji Sent
!Score Change
|-
| 🕊️, 🏳️, ❤️, 🥰, or 👏
| +15 (easy mode only)
|-
| 🤡
| -10
|-
| 🖕
| -100
|}

== Emojis Sent by Nations ==
The table below lists game events to which a nation might respond with an emoji, and the possible emojis they might send. Note that a nation is not guaranteed to send an emoji in response to an event; many of them have a random chance of being sent, and they're limited to sending emojis no faster than once per 300 ticks.

{| class="wikitable"
!Event
!Causal Event
!Possible Emoji Responses
|-
| rowspan="2" | Overwhelmed
| Being [[MIRV]]ed
| rowspan="2" | 💀🆘😱🥺😭😞🫡👋
|-
| Under attack by overwhelming forces
|-
| Unimpressed
| Attacked by a human with a tiny force
| ❓🤡🥱
|-
| Congratulations
| A team or human player wins
| 👏
|-
| Brag
| A nation controls the most tiles
| 👑🥇💪
|-
| Charm allies
| Sent occasionally to a human ally
| ❤️😊🥰🤝😇💪
|-
| Annoy traitors
| Sent occasionally to a non-friendly human traitor
| 🤡
|-
| Taunt the pipsqueak
| A human player owns less than 1% of the total land area after 10 minutes
| 🐀
|-
| Hello
| During the first minute of the game
| 👋
|-
| Insulted
| Received 🖕
| 🖕😡🤡😞😭
|-
| rowspan="4" | Confused
| Received 🤡
| rowspan="4" | ❓🤡
|-
| Received 🕊️, 🏳️, ❤️, 🥰, or 👏 when relationship is bad
|-
| Rejected alliance request from traitor
|-
| Rejected alliance request because relationship bad
|-
| rowspan="4" | Love
| Received 🕊️, 🏳️, ❤️, 🥰, or 👏 when relationship is neutral or better
| rowspan="4" | ❤️😊🥰
|-
| Received gold donation worth at least 50 relationship points
|-
| Received troop donation large enough to improve relationship
|-
| Accepted alliance request because you are a threat
|-
| OK
| Received gold donation worth more than 0 relationship points but less than 50
| 👍
|-
| Too small
| Received gold or troop donation too small to improve relationship
| ❓🥱
|-
| Warship retaliation
| Retaliated to trade/transport ship being destroyed by building warship
| ⛵
|-
| Nuke
| Fired a ballistic weapon
| ☢️💥
|-
| Scared
| Offered alliance request because you are a threat
| 🙏🥺
|-
| Handshake
| Offered or accepted alliance request because relationship is good
| 🤝
|-
| We're not friends
| Refused assistance request because relationship is bad
| 🥱🤦‍♂️
|-
| Are you kidding?
| Refused assistance request because target is self
| 🥺💀
|-
| Won't attack allies
| Refused assistance request because target is ally
| 🕊️👎
|-
| I will assist
| Accepted assistance request
| 👍🤝🎯
|-
| Aggressive attack
| Attacked human while relations are good (probably attacked first)
| 😈
|-
| Attack
| Attacked human while relations are not good (probably retaliating)
| 😡
|}

Communication

2026-03-23T07:15:53Z

Rjwut: /* Emojis Sent by Nations */ Attack emojis

'''Communication''' in [[Openfront]] allows players and [[nations]] to send each other emojis, predefined chat messages, and attack intents in order to plan for attack, defense, and ultimately the win.
{{stub}}

== Sending Emojis ==
Players can send emojis to other humans or nations. Emojis sent between humans has no effect on the game itself. Sending certain emojis to a nation can affect the relationship score with them:

{| class="wikitable"
!Emoji Sent
!Score Change
|-
| 🕊️, 🏳️, ❤️, 🥰, or 👏
| +15 (easy mode only)
|-
| 🤡
| -10
|-
| 🖕
| -100
|}

== Emojis Sent by Nations ==
The table below lists game events to which a nation might respond with an emoji, and the possible emojis they might send. Note that a nation is not guaranteed to send an emoji in response to an event; many of them have a random chance of being sent, and they're limited to sending emojis no faster than once per 300 ticks.

{| class="wikitable"
!Event
!Causal Event
!Possible Emoji Responses
|-
| rowspan="2" | Overwhelmed
| Being [[MIRV]]ed
| rowspan="2" | 💀🆘😱🥺😭😞🫡👋
|-
| Under attack by overwhelming forces
|-
| Unimpressed
| Attacked by a human with a tiny force
| ❓🤡🥱
|-
| Congratulations
| A team or human player wins
| 👏
|-
| Brag
| A nation controls the most tiles
| 👑🥇💪
|-
| Charm allies
| Sent occasionally to a human ally
| ❤️😊🥰🤝😇💪
|-
| Annoy traitors
| Sent occasionally to a non-friendly human traitor
| 🤡
|-
| Taunt the pipsqueak
| A human player owns less than 1% of the total land area after 10 minutes
| 🐀
|-
| Hello
| During the first minute of the game
| 👋
|-
| Insulted
| Received 🖕
| 🖕😡🤡😞😭
|-
| rowspan="4" | Confused
| Received 🤡
| rowspan="4" | ❓🤡
|-
| Received 🕊️, 🏳️, ❤️, 🥰, or 👏 when relationship is bad
|-
| Rejected alliance request from traitor
|-
| Rejected alliance request because relationship bad
|-
| rowspan="4" | Love
| Received 🕊️, 🏳️, ❤️, 🥰, or 👏 when relationship is neutral or better
| rowspan="4" | ❤️😊🥰
|-
| Received gold donation worth at least 50 relationship points
|-
| Received troop donation large enough to improve relationship
|-
| Accepted alliance request because you are a threat
|-
| OK
| Received gold donation worth more than 0 relationship points but less than 50
| 👍
|-
| Too small
| Received gold or troop donation too small to improve relationship
| ❓🥱
|-
| Warship retaliation
| Retaliated to trade/transport ship being destroyed by building warship
| ⛵
|-
| Nuke
| Firing a ballistic weapon
| ☢️💥
|-
| Scared
| Offered alliance request because you are a threat
| 🙏🥺
|-
| Handshake
| Offered or accepted alliance request because relationship is good
| 🤝
|-
| We're not friends
| Refused assistance request because relationship is bad
| 🥱🤦‍♂️
|-
| Are you kidding?
| Refused assistance request because target is self
| 🥺💀
|-
| Won't attack allies
| Refused assistance request because target is ally
| 🕊️👎
|-
| I will assist
| Accepted assistance request
| 👍🤝🎯
|-
| Aggressive attack
| Attacked human while relations are good (probably attacked first)
| 😈
|-
| Attack
| Attacked human while relations are not good (probably retaliating)
| 😡
|}

Communication

2026-03-23T07:12:03Z

Rjwut: Emojis that affect relations; emojis sent by nations

'''Communication''' in [[Openfront]] allows players and [[nations]] to send each other emojis, predefined chat messages, and attack intents in order to plan for attack, defense, and ultimately the win.
{{stub}}

== Sending Emojis ==
Players can send emojis to other humans or nations. Emojis sent between humans has no effect on the game itself. Sending certain emojis to a nation can affect the relationship score with them:

{| class="wikitable"
!Emoji Sent
!Score Change
|-
| 🕊️, 🏳️, ❤️, 🥰, or 👏
| +15 (easy mode only)
|-
| 🤡
| -10
|-
| 🖕
| -100
|}

== Emojis Sent by Nations ==
The table below lists game events to which a nation might respond with an emoji, and the possible emojis they might send. Note that a nation is not guaranteed to send an emoji in response to an event; many of them have a random chance of being sent, and they're limited to sending emojis no faster than once per 300 ticks.

{| class="wikitable"
!Event
!Causal Event
!Possible Emoji Responses
|-
| rowspan="2" | Overwhelmed
| Being [[MIRV]]ed
| rowspan="2" | 💀🆘😱🥺😭😞🫡👋
|-
| Under attack by overwhelming forces
|-
| Unimpressed
| Attacked by a human with a tiny force
| ❓🤡🥱
|-
| Congratulations
| A team or human player wins
| 👏
|-
| Brag
| A nation controls the most tiles
| 👑🥇💪
|-
| Charm allies
| Sent occasionally to a human ally
| ❤️😊🥰🤝😇💪
|-
| Annoy traitors
| Sent occasionally to a non-friendly human traitor
| 🤡
|-
| Taunt the pipsqueak
| A human player owns less than 1% of the total land area after 10 minutes
| 🐀
|-
| Hello
| During the first minute of the game
| 👋
|-
| Insulted
| Received 🖕
| 🖕😡🤡😞😭
|-
| rowspan="4" | Confused
| Received 🤡
| rowspan="4" | ❓🤡
|-
| Received 🕊️, 🏳️, ❤️, 🥰, or 👏 when relationship is bad
|-
| Rejected alliance request from traitor
|-
| Rejected alliance request because relationship bad
|-
| rowspan="4" | Love
| Received 🕊️, 🏳️, ❤️, 🥰, or 👏 when relationship is neutral or better
| rowspan="4" | ❤️😊🥰
|-
| Received gold donation worth at least 50 relationship points
|-
| Received troop donation large enough to improve relationship
|-
| Accepted alliance request because you are a threat
|-
| OK
| Received gold donation worth more than 0 relationship points but less than 50
| 👍
|-
| Too small
| Received gold or troop donation too small to improve relationship
| ❓🥱
|-
| Warship retaliation
| Retaliated to trade/transport ship being destroyed by building warship
| ⛵
|-
| Nuke
| Firing a ballistic weapon
| ☢️💥
|-
| Scared
| Offered alliance request because you are a threat
| 🙏🥺
|-
| Handshake
| Offered or accepted alliance request because relationship is good
| 🤝
|-
| We're not friends
| Refused assistance request because relationship is bad
| 🥱🤦‍♂️
|-
| Are you kidding?
| Refused assistance request because target is self
| 🥺💀
|-
| Won't attack allies
| Refused assistance request because target is ally
| 🕊️👎
|-
| I will assist
| Accepted assistance request
| 👍🤝🎯
|}

Difficulty

2026-03-19T21:13:45Z

Rjwut: Major revamp reflecting how difficulty now affects nation resources and behavior

Difficulty levels in [[OpenFront]] change the intensity of the game for private and [[Single Player|singleplayer]] lobbies.

When creating a new lobby, several options (such as changing [[maps]] and [[Game Settings|game settings]]) can be selected by the host. Beneath the [[Maps|map]] choice is the choice of difficulty. There are four difficulty levels:

* Easy
* Medium
* Hard
* Impossible

The difficulty setting has a significant impact on [[nations]]' resources and behavior.

== Attack Strategies ==

Nations have a "toolbox" of attack strategies to choose from:

* '''AFK:''' Attack the weakest AFK enemy
* '''Assist:''' Respond to someone requesting their assistance
* '''Betray:''' Decide if they want to [[Traitor|betray]] someone, and attack them if so
* '''Bots:''' Attack one or more [[Bots|bots]]
* '''Donate:''' Donate [[Troops|troops]] to an [[Alliance|ally]]
* '''Hated:''' Attack their most hated enemy whose troops don't overwhelmingly overpower their own
* '''Island:''' Find the nearest enemy island if they have no bordering enemies
* '''Nuked:''' Attack someone who was recently [[Nuke|nuked]]
* '''Retaliate:''' Attack back if being attacked
* '''Traitor:''' Attack a bordering traitor
* '''Very Weak:''' Attack someone whose troops are significantly depleted and somewhat fewer than their own
* '''Victim:''' Attack someone who isn't significantly stronger than them and under a strong attack from others
* '''Weakest:''' Find the weakest neighbor who has fewer troops than them

The difficulty levels dictate which of these strategies a nation can use, and their order of priority. The highest priority strategy which provides a valid attack recommendation is used. The priorities for each difficulty level, from highest to lowest, are:

* '''Easy:''' Nuked, Bots, Retaliate, Assist, Betray, Hated, Weakest
* '''Medium:''' Bots, Nuked, Retaliate, Assist, Betray, Hated, AFK, Traitor, Weakest, Island, Donate
* '''Hard:''' Bots, Retaliate, Assist, Betray, Nuked, Traitor, AFK, Hated, Very Weak, Victim, Weakest, Island, Donate
* '''Impossible:''' Retaliate, Bots, Very Weak, Assist, Traitor, AFK, Betray, Victim, Nuked, Hated, Weakest, Island, Donate

== Other Effects on Troops ==
{| class="wikitable" style="text-align: right"
!
!Easy
!Medium
!Hard
!Impossible
|-
|Starting troops
|12,500
|18,750
|25,000
|31,250
|-
|Max troops compared to humans
|50%
|75%
|100%
|125%
|-
|Troop replenishment rate compared to humans
|90%
|95%
|100%
|105%
|-
|Odds of changing their mind after deciding to attack
|50%
|25%
|0%
|0%
|-
|Odds of choosing to donate troops when that strategy comes up
|0%
|25%
|50%
|100%
|-
|Delay between attacks (ticks)
|65-80
|55-70
|45-60
|30-50
|-
|Max bots willing to attack simultaneously
|1
|1-2
|3
|100
|}

On Easy difficulty, nations always full send when attacking.

== Ballistic Weapons ==
On difficulties higher than Easy, nations in team games avoid nuking a spot that allies are already nuking. On Hard or Impossible, they'll try to avoid trajectories that will get intercepted by [[SAM Launcher|SAMs]]. On Impossible, they'll check three times as many locations to find a spot to nuke to outrange a SAM launcher, and if they can't find any suitable nuke locations, they'll attempt to overwhelm enemy SAMs by targeting a SAM installation and sending level + 1 nukes.

Difficulty level significantly affects a nation's [[MIRV]] behavior. Each increased difficulty level:

* Causes them to MIRV earlier against a player getting closer to the victory threshold, or increasing the gap in the number of cities between the one with the most cities and the next highest
* Halves the likelihood that a nation will hesitate before sending a MIRV

== Building ==
{| class="wikitable" style="text-align: right"
!
!Easy
!Medium
!Hard
!Impossible
|-
|Target SAM/[[City|city]] ratio
|0.15
|0.2
|0.25
|0.3
|-
|Odds of upgrading a random [[Buildings|building]] instead of one with SAM protection
|70%
|40%
|25%
|10%
|-
|Odds of checking for maximal connectivity when placing [[Factory|factories]]/cities
|0%
|60%
|75%
|100%
|-
|Odds of building a [[Warship|warship]] in retaliation for [[Trade Ship|trade]]/[[Transport Ship|transport]] ship destruction
|0%
|15%
|50%
|80%
|}

On Hard or Impossible:

* If a player is attempting to build lots of warships, the wealthiest nations will build warships of their own to counter.
* Nations consider structure level and existing SAM coverage when determining where to place SAM launchers.

== Relations ==
Increased difficulty makes nations more strategic about alliances:

* Less likely to get "confused" and accept or reject randomly
* Better intelligence about gauging the offering player's threat level
* Consideration of how many allies they already have
* Less likely to accept an early alliance offer
* Less likely to accept in a team game

On Easy difficulty:

* You can improve the relationship with a nation simply by sending 🕊️, 🏳️, ❤️, 🥰, or 👏.
* Nations will send alliance requests to bots.
* On Hard or Impossible, nations reject alliance requests from players that have too many alliances already.

{| class="wikitable" style="text-align: right"
!
!Easy
!Medium
!Hard
!Impossible
|-
|Relationship point loss when a nation is attacked
|60
|70
|80
|100
|-
|Percent of nation's max troops you must donate to earn relationship upgrade
|7.7%
|9.1%
|11.1%
|14.3%
|-
|Relation level required to cancel an embargo
|Neutral
|Neutral
|Friendly
|''(never cancels)''
|-
|Multiplier for [[Gold|gold]] donation required to improve relations
|1x
|2x
|5x
|10x
|}

Conditions under which a nation is willing to betray an ally:

* '''Easy/Medium:''' If outnumbering opposing troops by more than 1000%
* '''Medium/Hard/Impossible:''' If outnumbering opposing troops by more than 20% and the other player is a traitor
* '''Medium/Hard/Impossible:''' If outnumbering opposing troops by 300% and they're the only bordering player
* '''Hard/Impossible:''' If outnumbering opposing troops, and the other player is at less than 20% of their max troops (including those that are attacking)

== Trivia ==

* While there is a defined "Difficulty Modifier" function with large gaps between difficulty values (1, 3, 9, 18), this value is actually not used anywhere within the source code.

[[File:Difficulty.jpeg|thumb|This shows the [[difficulty]] selection screen, currently selected is the default choice.]]

== See also ==
* [[Bots]]
* [[Single Player]]
* [[Game Settings]]
* [[Maps]]