Terminator: Dark Fate – Defiance is a real-time strategy game based on the Terminator: Dark Fate universe that follows the war between humanity and Legion's synthetic intelligent machine network.

The demo includes the tutorial of the single-player campaign, trying to survive in Atlanta one month after Judgment Day, the first mission from the new campaign DLC “We Are Legion”, bringing Machine firepower to a human settlement, and one Multiplayer Map.

In the full game, players assume the role of a commander in the Founders, remnants of the US military, striving to thwart Legion's extermination plans against humanity. The game offers skirmish and multiplayer modes, allowing players to choose from the diverse factions: Founders, Resistance, and Legion.

Players can control an army throughout various missions on expansive strategic maps, making critical decisions about unit placement and battle tactics. By honing their skills and replaying missions for optimal outcomes, players can rise as leaders of the resistance against the machines.