Monsters spawned from another dimension are trying to make The Milky Way their personal trash can. As attempts to defend the solar system fail, the fate of the Earth, and even the universe, rests with one man. YOU are Sam ’Serious’ Stone, a legend in your time. Sam is our only hope against these mischievous miscreants and their evil leader, Mental. In practice, this translates into adrenaline-pumping, non-stop alien blasting action, as Serious Sam throws whole waves of monsters at the player.

Bring back the onslaught, Serious Sam HD is not your mother’s generic, large-scale, orchestral scored, Space Marine-themed epic FPS with dialog that pretends it’s an RPG ... instead, Serious Sam HD is a grab you by the jibblies run and gun, twitch FPS: big guns, tons of enemies, 4-Player Online Co-Op and HD graphics.