OMG Weapons! (and Monsters)

'''OMG Weapons! (and Monsters)''' (or OMGWPNS) is a gameplay mod that replaces weapons and monsters. Released by Dean "deathz0r" Joseph in July 2005, it was one of the first mods uploaded to the idgames archive that included DECORATE code, and thus required the ZDoom Community Build or GZDoom to play at the time. (ZDoom 2.1.0, which added the necessary DECORATE support, had not yet been released.)

OMGWPNS features 20 extra weapons and 43 new monsters. All of them are heavily based off the originals, with most changing attacks and/or sizes, and all being recolorations (with the majority being by palette translation). They are weaved into the game by random spawners, which replace the original weapon/monster types. At each spawner, either the original or a modified version of the weapon or monster will be placed there. For example, where a chaingun may originally be located in a map will be replaced by a Chaingun Spawner. At the start of each map, it may just spawn the chaingun again, or another weapon based off it like the Minigun or Streetcleaner. The same goes for monsters, but with their types.

In 2015, deathz0r released a tenth anniversary edition of the mod (version 5), featuring a number of new changes, including a few new monsters and weapons. Notable changes include making the Fast Fists and Laser Pistol as default weapons, with the Fast Fists replacing the default fist, as well as the removal of certain weapons and monsters. Some existing weapons got cosmetic changes, and some existing monsters got new attacks. Additionally, the mod can be loaded using the Eternity Engine with support for all but three monsters, but with no weapons support.

Weapons
There are a total of 24 extra weapons in OMGWPNS:

Slot 1 Slot 2 Slot 3 Slot 4 Slot 5 Slot 6 Slot 7
 * Fist (removed in version 4)
 * Fast Fists (replaces the fist in version 4)
 * Metal Fist
 * Chainsaw
 * Throwable Chainsaw
 * Pistol
 * Laser Pistol (default starting weapon in version 4)
 * Shotgun
 * Super Shotgun
 * Pulse Rifle (removed in version 4)
 * Dual Pulse Rifle
 * Ballbreaker
 * Lightning Shotgun (added in version 4, replaces the pulse rifle)
 * Spine Crusher (added in the tenth anniversary edition)
 * Chaingun
 * Minigun
 * Laser Chaingun (removed in version 3)
 * Streetcleaner
 * Rocket Chaingun (added in version 3)
 * Rocket Launcher
 * Hellraiser
 * Grenade Launcher
 * Mini Missile Launcher
 * Homing Rocket Launcher (added in version 2)
 * Fire Bomber (added in the tenth anniversary edition)
 * Plasma Rifle
 * Railgun
 * Auto-Railgun
 * Flamethrower
 * Mega Proton Cannon
 * BFG 9000
 * BFG 2704 (added in version 4)
 * Mini-BFG
 * Vortex Gun
 * Vapour Gun

Monsters
There are a total of 62 extra monsters in OMGWPNS:


 * Grenade Zombie Man
 * Pulse Zombie Man
 * SSG Zombie Man
 * Rocket Shotgun Guy
 * Railgun Shotgun Guy
 * Flame Shotgun Guy (removed in version 3)
 * Flame Chaingun Guy
 * Mini-BFG Chaingun Guy
 * Hellraiser Chaingun Guy
 * Plasma Chaingun Guy
 * Blood Imp
 * Gold Imp
 * Death Imp
 * Imp Lord
 * Mini Demon
 * Slime Demon
 * Greater Cacodemon
 * Camo Cacodemon
 * Baby Cacodemon
 * Cacodemon Lord
 * Warrior of Hell
 * Unholy Servant
 * Lord of Hell
 * Satyr
 * Minion
 * Caco Elemental
 * Tarantutron
 * Missile Mastermind
 * Fatassbus
 * Plumpabus
 * Psychoskele
 * Conjurer
 * Medicvile
 * Summoner
 * Arachnotron Lord
 * Mancubus Lord
 * Revenant Lord
 * Chaingun Nazi
 * Flame Nazi
 * Grenade Nazi
 * Proton Elemental
 * Suicide Soul
 * Mini Spectre
 * Suicide Demon (added in version 3)
 * Mini Spider Mastermind (added in version 3)
 * Mini Cyberdemon (added in version 3)
 * Demon of the Pit (added in version 3)
 * BFG 2704 Shotgun Guy (added in version 4)
 * Toxic Soul (added in version 4)
 * Torture Elemental (added in version 4)
 * Technodemon (added in version 4)
 * Cyberbaron (added in version 4)
 * Elemental Lord (added in version 4)
 * Shadow Imp (added in the tenth anniversary edition)
 * Hunter (added in the tenth anniversary edition)
 * Mystic Cacodemon (added in the tenth anniversary edition)
 * Skeleboner (added in the tenth anniversary edition)
 * Infernabus (added in the tenth anniversary edition)
 * Hell Reaper (added in the tenth anniversary edition)
 * Death Vile (added in the tenth anniversary edition)
 * Soul Lord (added in the tenth anniversary edition)
 * Spider Enforcer (added in the tenth anniversary edition)
 * Arch Lord (added in the tenth anniversary edition)