Serious Sam 2 has been out for 15 years, but that hasn't stopped developer Croteam from adding to the game to celebrate the Serious Sam franchise's 20 year anniversary. The new content includes a weapon, a dozen multiplayer maps, and several quality of life improvements.
The Serious Sam games have always been about good mindless cooperative fun. Not only is Serious Sam an entertaining franchise, it's also a showcase for Croteam's Serious Engine. It's been a few years now since we saw Serious Sam II but it appears everyone's favorite self promoting t-shirt wearing hero is about to make a comeback, and he's bringing a new 3D engine with him.
