Picking up where Serious Sam: Second Encounter left off, Sam has rocketed off towards the conquered planet of Sirius, the new home of the notorious Mental. While en route, the Great Wizards Council of the nearly eradicated Sirian civilization telepathically contacts Sam to aid him in his quest to destroy Mental and help restore Sirius. He is then sent on a quest to find the fragments of a mystical medallion scattered throughout the galaxy that will bestow Sam with the power to defeat Mental.
Alpha Prime is a first person action game with an emphasis on the single player experience. At its core is a Science Fiction story written by the foremost Czech Sci-fi author Ondrej Neff. Game play will be a varied balance of combat and more technical activities such as hacking and remotely controlling robotic devices.