Co-op horror where proximity voice turns terror into comedy
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.
Turn on proximity voice chat and watch the terror turn into comedy.
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.
Selected for the Logpier co-op catalog with a 92% positive rating across 4,796 Steam reviews (Popular Hit: 2,000+ reviews). Built for 1–4 Players via Online Co-op (All Players Must Own).
Structured around ~1–2 hrs (Mission / Run-Based) sessions with drop-in supported between lobby expeditions, making it an easy shortlist contender for game night.
Note: This guide is an AI-assisted curation summary synthesized from public Steam store metadata and user review signals. First-hand squad play notes submitted by community reviewers appear separately below.
Even scaredy-cats will laugh their way through with a 4-player squad.
