Build armies and attack other players.
* 16 types of World War 1 units
-- infantry: riflemen, grenadiers, machine guns
-- heavy weapons: artillery cannons, tanks, anti aircraft guns
-- flying units: fighter airplanes and bomber airplanes, transport balloons
-- special units: medics, diplomats, spies, trumpeters
* 21 types of buildings
-- build and train fighting units
-- gold mines, silver mines and treasuries
-- defense fortifications and bunkers
-- special buildings: embassy, spy headquarter, hospitals, airports
* Collect Powerups to improve specs of buildings and units
-- Powerups Health, Capacity, Damage, Speed, Radius