Serious Sam: Siberian Mayhem

Serious Sam: Siberian Mayhem is a new stand-alone expansion to the world of the classic FPS series. Join the fight against Notorious Mental on a journey through the wild lands of Russia, and find your way through this lost chapter of Sam Stone's adventures. Welcome back to the world of Serious Sam 4 in 'Siberian Mayhem' - a new standalone chapter in the adventures of 'Serious' Sam Stone. Make y…