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...

We just reviewed Serious Sam 4, a first-person shooter from Devolver Digital. While the recently released console ports suffer from major technical problems, the Steam version performs much better. Steam players will soon have more Sam on their plate with the impending arrival of Serious Sam: Siberian Mayhem, a standalone expansion. Siberian Mayhem is due out on PC on January 25 and will support 4-player online co-op.