Sanctum - Watch It ! [ Game Trailer ] HD

Sanctum, a 2011 main game for PC and Mac, uniquely fuses tower defense strategy with first-person shooter action. You play as soldier Skye, building and upgrading automated defenses to stop alien waves, then jumping into the fray to fight directly alongside your towers. Its core appeal is this mandatory integration: success requires both tactical foresight in tower placement and precision in combat. The game features one DLC expansion.