Warhammer 40000 Boltgun is a retro-style first-person shooter set in the grimdark Warhammer 40,000 universe. Players control a Space Marine mowing down hordes of heretics and daemons with a powerful arsenal of iconic weapons.

The game embraces old-school shooter design, with fast movement and relentless combat paired with a pixelated art style inspired by classic 1990s shooters, all wrapped in the franchise's brutal sci-fi setting.