Gear up for the ultimate in arcade-style shooting game with the Serious Sam HD video game. Experience non-stop action through extensive multiplayer battles of this first-person shooter game. Fight against hordes of Mentals army with stunning visuals designed for this Microsoft Xbox 360 video game. An eight-player Deathmatch and Co-operative games of the Serious Sam HD create the ultimate mayhem. Spread across four spectacular worlds, this first-person shooter game offers you an explosive experience, letting you blast everything that is moving and not under your control. Enter this Microsoft Xbox 360 video game to play as Serious Sam-the king of FPS Mayhem.