Now now, Samuel, put down the shotgun and open your presents. Croteam are celebrating the 20th anniversary of their Serious Sammy series with some serious updates. The most recent, Serious Sam 4, has just gotten official modding tools for folks to tinker with. Serious Sam 2 has gotten a huge update too, 15 years after its original launch. Sammy 2 now has dual wielding and rocket jumping and 12 new multiplayer maps too.