Serious Sam: Siberian Mayhem released in 2022 is a stand alone expansion for Serious Sam 4 an awarded and praised entry of the classic FPS series. As the title suggests, the game takes the player into the Russian wilderness in Siberia where they must fight some of the most dangerous enemies Sam has ever faced. New beautiful maps, awesome weapons and powerful enemies bring fresh experience and provide hours of great fun. Story Join Sam 'Serious' Stone on his journey into Tunguska, deep into the Russian heart of Siberia. The land is cold, harsh and unforgiving yet strangely beautiful and full of secrets. Even the alien invaders seem to be lost in this place. And that's why you'll be facing some of the most dangerous and intimidating creatures you've ever seen. You'll be able to sate your thirst for combat and exploration, from coastlines, dense forests and abandon villages. Siberia is vast and holds many secrets. Can you find them all? Experience this high action-packed story in single-p