Serious Sam: Siberian Mayhem is the stand-alone expansion to Serious Sam 4. In it, players are searching Russia to find the traitorous General Brand. Players will be able to travel through five new levels that range from arctic coastlines, desolate forests, abandoned villages, and a chilling ghost town.
Throughout your adventure you'll meet new characters and outcasts as well as discover well-hidden secrets. While doing so there will be new bosses and foes to fight, as well as new gadgets like the experimental crossbow. There's also new new vehicles such as the snowmobile and towering mechs.
Serious Sam: Siberian Mayhem will release on PC on January 25, 2022.