Serious Sam: Siberian MayhemXbox Series X|S

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 your way through the vast Russian landscapes on a quest to catch up with the traitorous General Brand, who remains one step ahead of Sam at every turn. The road is long, and there is oh so much to see.

Co-developed by Timelock Studio and Croteam, 'Serious Sam: Siberian Mayhem' presents an expanded look at a familiar journey full of forgotten stories, unexplored places, and Sam's trademark guns-blazing battles against Mental's Horde. Join the fight, comrade!

WELCOME TO SIBERIA

...the heart of Russia. This place is huge, cold, and so unpredictable even the alien invaders feel lost. Travel through five new levels set in a beautiful and dangerous world, from Arctic coastlines and desolate forests to abandoned villages and a chilling ghost town. Siberia is large enough for you to fight & explore for as much as you want.