Earlier today, Devolver Digital announced a standalone expansion for Serious Sam 4 titled Serious Sam: Siberian Mayhem. This expansion only features 5 main levels/missions, but will include side activities and exploration to do as well. 50 weapons will be offered, including the experimental crossbow and the classic AK.
Rest assured, the high octane first person shooting action of a Serious Sam game will be no less in this one. Currently there is no price revealed but Serious Sam: Siberian Mayhem is launching on PC via Steam on January 25, 2022.
Check out the official trailer below: