Jimmy's Mods has the debut release of a pair of new Sin mods. In Hunter, the aim is to become the mutant, and evade or kill the "Hunters" in order to stay the mutant, and score points. Killing Spree is modestly described as a "simple" modification to add enhanced feedback to Sin, "inspired by Quake3 and Unreal Tournament." Though they don't add to your score in any way, when you rack up 5, 10, 15, 20, or 25+ frags in a row without dying the game will now give feedback on the screen with messages familiar from UT like "You are on a Rampage." Also, when you pick up a pair of frags within six seconds, the game will give a Q3A-esque "Excellent!"