Act of Aggression is to be set in the 2020s, during which many states around the world have gone bankrupt from a massive economic crisis. This results in the growth of an organisation known as the "Cartel", a shadowy organization that has infiltrated numerous government organisations and agencies, which this forces the United Nations to respond.

Act of Aggression will include two separate single player campaigns. In one of the campaigns, players will be a head of a military organization created by the United Nations, known as the "Chimera". The Chimera special unit consists of super soldiers and are under UN command and formed by personnel that come from different countries of the UN

The game aims to “bring the players back in the 90’s Golden Age of strategy games.”[1], implying that Act of Aggression will be a traditional RTS, with its gameplay similar to Command & Conquer and StarCraft. Act of Aggression will thus include base building and resource gathering.

The three confirmed playable factions are the United States Army, the Chimera and the Cartel.[3] The game will include superweapons and "anti-superweapons" for each of the factions. Each faction will upgrade in a centralized headquarters in order to unlock new units, buildings, and upgrades.