Burst into the chaos, guns blazing!
Timelock Studio and Serious Sam 4 developer Croteam have unloaded the cold winds of chaos today on Steam, with the launch of standalone expansion Serious Sam: Siberian Mayhem!
Immerse yourself in vast Russian landscapes, in five brand new missions set in a chilling ghost town, desolate forests, abandoned villages – along the freezing Artic coastline.
Never seen before foes await your gun slinging wrath as a new set of dangerous foes and bosses join the Horde – including some of the most advanced and intimidating creatures the hallowed FPS series has ever seen.