Click any Sim, pick a CS2 gun and take them out: CS2's real AK-47, AWP and knife in your Sim's hand, with CS2's own sounds.
A normal game of The Sims 4 with one new option: click any other Sim and choose Counter-Strike 2... from the pie menu.
Pick a weapon from the Counter-Strike 2 list: AK-47, M4A4, AWP, Desert Eagle or Knife. Then:
Each weapon has its own range: the AWP fires from across the room, while the knife has to get close.
Your killer also carries a "Murderer" moodlet for 24 Sim hours. It makes them Sad, unless they have the Evil trait, in which case they feel great.
Counter-Strike 2 is really in it. The gun models, weapon names, T/CT sides and sounds come from your own CS2 install. On first start the mod converts CS2's guns into Sims 4 props on your PC, which takes about 30 seconds. Nothing from CS2 is copied into the download, and CS2 is never launched or modified.
Needs: The Sims 4 and Counter-Strike 2 installed. Script mods must be allowed in Sims 4 (Game Options > Other).