Description: [Xbox Live Arcade] The legendary Sam "Serious" Stone returns to battle the relentless hordes of Mental's army in glorious high definition on Xbox LIVE Arcade in Serious Sam HD: The First Encounter. Based on the original indie arcade shooter sensation Serious Sam: The First Encounter, Serious Sam HD features stunningly redesigned visuals, over-the-top action, and intense online co-op for up to four players. [Croteam]