In Timesplitters 1, if you start a multiplayer match with no weapons selected, the player will recieve a pistol. The pistol will make no noise when firing, and the only sound is the bullet hitting objects. The rest of the bots will just stand and not move around, nor do they respond if you shoot them. You can kill them though. The pistol eventually runs out of ammo, since there are no pickup items in the level.