Have You Ever Hated Your Neighbor's Partying so Much You...Murdered Everyone at Their Party?
The game itself is simple: "You play as a regular guy who got fed up with neighbors having loud parties at 2am. One thing leads to another, and you find yourself at different parties with the goal to kill everyone in creative ways, and not get caught."
It's certainly less visceral than Hatred, but the concept of mass slaughtering of innocents is pretty similar. Does Party Hard, "the tactical game of mass murder," bother you?