1337 Guns is a WAD that replaces almost all weapons with new models, sprites and makes them weaker. It also makes some monsters much powerful (e.g.: Cyberdemon is much faster and has more HP).
- Brass-Knuckled Fists: Same model, but much weaker.
- Chainsaw: Same model, nothing changed.
- Pistol: New Model and Sprite, it is weaker and it has to be reloaded after each shot.
- Shotgun: New Model and Sprite which looks more futuristic and fires plasma,
- Double-Barreled Shotgun: It uses the same model from Blood by Moonlith Soft.
- Chaingun: Changed, looks somehow like a more futuristic BFG, fires green plasma.
- RPG: Looks like a modern bazooka, fires homing missles.
- Plasma Gun: Looks like the Smartgun from Alien series, but fires plasma.
- BFG: 5 Barreled Gun, 600 cells for 1 shot.