Killzone is a first-person shooter where you defend a human colony from invasion by the Helghast—former colonists mutated by their harsh homeworld who now wage war on their origin species. You switch between four playable ISA soldiers mid-campaign, each with distinct combat abilities and weapon proficiencies. Missions range from urban firefights to industrial zones as Helghast forces push deeper into Vekta. The campaign emphasizes squad-based tactics, with AI teammates supporting your chosen character's role. Multiplayer supported up to sixteen players across six modes—Deathmatch, Team Deathmatch, Assault, Defend and Destroy, Supply Drop, and Domination—on eight maps, though servers shut down years ago. If you want a grounded sci-fi shooter that lets you approach battles from different tactical angles by swapping perspectives, this delivers that without elaborate hero mechanics.
