Serious Sam: Siberian Mayhem Now Unleashed on Steam
Serious Sam 4 is a big game filled with lots of shooting mayhem (and, on console, bugs). Still, some people can never get enough mayhem. They crave it! For that bloodthirsty brand of gamer, Serious Sam: Siberian Mayhem has just launched on Steam. The standalone expansion features five unique levels set in frosty Siberia, a substantial quantity of m...