Serious Sam: Siberian Mayhem

Devolver Digital · Croteam

Available Install to Play Premium tier ActionAdventure

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.

Available on GeForce NOW

Play type: Install to Play
Membership: Premium required
Last verified: 28 Jul 2026

Available on

Steam · Devolver Digital Open store ↗

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