Wars open between two regions and last 24 hours; active fronts are listed under Battles. To hit, your profile must be physically present in the war’s source or target region with the journey completed.

Your army consists of tanks, drones, ships and missiles: land wars use tanks, drones and missiles, naval wars use ships and missiles. A tank has 2,000 firepower and occupies 1,500 load in land wars. In land and naval wars, missile load can occupy at most 50% of the total war load limit; each missile occupies 3,000 load. The remaining load can be filled with tanks and drones on land or ships at sea, or left empty. At sea missiles support ships: without a ship in the load no naval hit is made. Missile wars are unchanged: only missiles are used, each occupies 3,000 load, the full limit can be filled and the 50% cap does not apply. Level, attributes and regional multipliers determine the final damage, which is calculated on the server; the level share scales every hit, in training too, by ×(1 + level/1000) (+10% at level 100). Premium does not change battle damage. Every hit varies by ±12.5% and has a 2% chance of a critical hit that deals ×2 damage; energy and consumed weapons stay the same. Your party at the moment of the hit is written to the contribution record; switching parties later does not move past damage.

When time ends, the side with the decisive damage advantage wins; on a tie the defending side is kept. The result and region ownership are recorded atomically and battle history is not rewritten.

When a land war, a naval war or the annexation of an unowned region changes a region’s owner, every building kind there is halved (rounded down). The winning state’s treasury receives 50% of the build cost of the destroyed buildings: 40 hospitals drop to 20 and the winner gets 4,400,000 CASH, 115,200 gold, 144,000 uranium and 86,400 oil. The region treasury is untouched and passes to the new owner with the region. Missile wars and drills pay no building money.