DG2: Defense Grid 2 is a strategy game built around protecting a core from incoming enemies by planning where to place defensive towers. Its story-driven campaign spans 21 dynamic maps, and the layouts shift during play, making adaptation part of the challenge. The design emphasizes careful placement, timing and experimentation rather than relying on a single fixed solution.
Levels offer multiple strategic approaches, while hundreds of challenge-mode variations change the rules and invite repeat attempts. Players can take on the campaign solo, cooperate online or compete against other players. Steam Workshop support and level-creation tools add a creative dimension, letting players make and share custom challenges.
The Aftermath DLC adds a five-mission story chapter centered on Fletcher and Governor Tydell. It introduces a distant-world conflict where enemies can mind-control their attackers, and frames the mission as stopping future invasions at their source. Across its campaign, multiplayer and challenge modes, Defense Grid 2 pairs familiar tower-defense planning with shifting maps and a wide range of ways to revisit its tactical problems.