To ally a person in the mode Free for All you right click their territory, and select the handshake option.
If the player accepts, you become allies for 5 minutes.
Details
In Free for All you can betray and ally freely. Other players can not see who you are allied with in this mode.
It works differently in the Teams mode. In this mode you are always allied with your selected color and you are unable to betray your allies. The game tries to put your clan members in your team.
Being allies has multiple effects:
- Trade is prioritized between allies.
- You do not accidentally attack an ally with ground units or transport ships.
- Your warships no longer capture their trade ships.
- You can send troops or gold to reinforce your ally.
Breaking an alliance causes the status Traitor:
- Global 50% defense and 20% attack speed reduction for 30 seconds.
- Allies can break their alliance with the traitor without triggering the traitor status.
- An embargo is made, blocking trades from being done until you either become allies again, or right click the player and select to allow trade.
- The number of betrayals on your information panel will increase by one.