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The following is a meta-article, which explains a concept which usually falls out of one of the wiki's categorizations, yet it's still important to explain something.

A mutator is a built-in component to the game which adds features or change the game characteristics in the Unreal series. All of the multiplayer-based Unreal games have mutators, and some can be gametype-specific, such as "No Orbs" in UT3's Warfare gametype. Many modifications can be toggled on/off with the use of mutators.

Although, compared to conventional mods, changes made to the game are small, mutators can have a large impact on gameplay. For instance, Instagib is sometimes considered a whole new gametype.

Unreal Tournament[]

In order to use mutators, click on "Start Practice Session" and select the "Mutators" option under the "Match" tab. To enable a mutator, double-click on its name or drag it to the "Mutators Used" box. If "Always use this Mutator configuration" is checked, then the selected mutators will be saved and will be active the next time the player starts a practice session.

Mutator Description
Arena (Shock Rifle, Pulse Gun, Flak Cannon, Rocket Launcher, Sniper Rifle) Replaces every weapon and ammo pickup in the match with one of these, depending on which one is selected. See the page for more info.
BigHead Killing raises the size of your head, being killed reduces it.
(Only available in the PlayStation 2 version by unlocking)
Chainsaw Melee The Impact Hammer is replaced by a Chainsaw.
FatBoy The more frags a player has, the more their bodies will grow. The more deaths a player has, the more their bodies will shrink.
Hyper Speed The speed of the game is raised to 150%.
(Only available in the PlayStation 2 and Sega Dreamcast versions)
Instagib DM Removes every pickup from the arena, and gives the players an Enhanced Shock Rifle, which causes players to explode into gibs instantly upon being hit.
Instant Rockets The Rocket Launcher can only fire one rocket at a time as opposed to being able load multiple rockets at once.
Jump Match Enables players to jump extremely high.
Low Gravity Reduces the gravity of the map.
No Powerups Invisibility, Shield Belt, Damage Amplifier, Jump Boots and the Big Keg O'Health are removed from the map.
No Redeemer Redeemers are removed from the map.
Relics Add relics to the match. See the page for more info.
(Bonus Pack 1)
Slomo The speed of the game is slowed to 50%.
(Only available in the PlayStation 2 and Sega Dreamcast versions)
Stealth Makes everyone invisible during a match.
Team Beacon Your teammates have an arrow above their heads, so you can identify them.
(Bonus Pack 2)
Volatile Ammo Ammo explodes when hit by a weapon.
(Bonus Pack 2)
Volatile Weapon Weapons are discharged when a player dies.
(Bonus Pack 2)

Chaos: UT[]

The following mutators are only available in UT: GOTY Edition through the use of the Chaos: UT mod.

Mutator Description
Chaos UT Replaces certain UT weapons with their Chaos UT counterparts.
No Health Health Packs, Health Vials, and Big Kegs O' Health are removed from the map.
Sword Arena All weapons on the map are converted to a Chaos UT Bastard Sword; ammo is removed.
Sword Melee Everyone's melee weapon is a Chaos UT Bastard Sword.

Unreal Championship and Unreal Tournament 2003/2004[]

Of the options available while selecting a map, there is a section called "Mutators." Picking up and moving Mutators will toggle them as on or off. If you select a gamemode that does not support a certain Mutator (such as Low Gravity on Assault), the mutator will be deselected.

Mutator UC 2003 2004 Description
Air Control - X X Changes how players move in the air.
Arena X X X Replaces weapons and ammo in the map.
BigHead X X X Same effect as FatBoy, but with the user's body instead of just his/her head.
Big Wheels - - X ONS/AS only. Kill a lot, and your vehicle's wheels grow in size. Be killed a lot, and they'll shrink.
Bonus Combos - * X Adds the Pint-sized (LLLL) and Camouflage (RRRR) Adrenaline Combos.
Bonus Vehicles - - ** Replaces certain vehicles with the Cicada, SPMA and Paladin.
Competition Mode X - - Disables Species specific attributes and levels the field to everyone. It's the inverse to Species Statistics.
Floaty Cadavers X X - Cadavers don't fall to the floor, but float.
Game Speed - - X Modifies the game's speed.
Instagib X X X Removes every pickup from the arena, and gives the players an Enhanced Shock Rifle, which causes players to explode into gibs instantly upon being hit.
Lightning Guns - - X Replaces all Sniper Rifles with Lightning Guns.
Lightweight Vehicles - - X ONS/AS only. When being hit, vehicles will fly higher and farther like balloons.
Link Gun Medic X - - The Link Gun heals teammates.
LowGrav X X X Reduces the gravity of the map.
No Adrenaline X X X Adrenaline pickups are removed from the map.
No Superweapons - X X Redeemers and Ion Painters are removed from the map. In 2004, the Target Painter is removed as well.
Onslaught Weapons - - X Adds ONS weapons (Mine Layer, Grenade Launcher, AVRiL and Target Painter) to the other gametypes.
QuadJump - X X Players can jump up to four consecutive times instead of two.
Regeneration X X X All players regenerate health.
Slow Enemy X - - Reduces the enemy's speed.
Slow Motion Corpses X X X Dramatic slow-mo death animations.
Sniper Rifles - - X Same as Lightning Guns, but inverted: all Lightning Guns are replaced by Sniper Rifles.
Species Statistics - - X Each race has unique combat statistics.
Stunt Vehicles - - X ONS/AS only. Vehicles can jump. Hold down the crouch key to charge up and then release to jump. They can also control wheeled vehicles in mid-air.
Super Berserk - - X Weapons are insanely fast and powerful.
Team Regeneration X - - All members of your team regenerate health—though it's still no excuse to shoot them!
UDamage Reward - - X Any remaining UDamage powerup is thrown from players when they are fragged.
UT Classic - - X Classic UT style weapons and movement options.
UT2003 Style - - X UT2003 style fast weapon switching and boost dodging.
UTV2004S - - X Required to support UTV2004 SeeAll mode.
Vampire X X X Damaging your opponents will regenerate your health.
Vehicle Arena - - X ONS/AS only. Replaces all vehicles in a map with a particular one.
Vehicle Pickups - - ** Vehicles can pick up items and give them to the driver.
Zoom InstaGib - X X Same as Instagib, but the secondary fire is a zoom function.

(*) Available in UT2003 through the Epic Bonus Pack. (**) Available in UT2004 through the ECE Bonus Pack or the Mega Pack.

Unreal Championship 2[]

Mutator Description
Adrenaline Jumps Players can make extra jumps by spending adrenaline.
Announce Powerups Players receive notification when a powerup respawns.
Camp Fire To prevent camping, all players carry a ticking time bomb. Kill your enemies to buy extra time. When the timer hits zero, your bomb explodes, killing you and anyone nearby.
Character Weapons Only Only your starting pistols and melee weapons are allowed.
Classic UC No adrenaline, locking, melee, or third person camera. Pure old school.
Double Adrenaline Players gain adrenaline twice as fast.
Friendly Fire Damage Attacks that hit friendly players do half damage instead of none.
Timer Displayed
Instagib One shot, one kill. Melee weapons and high-power sniper rifles only.
Looting Players drop their ammo and powerups when they die.
LowGrav Gravity is reduced, but only for players.
LowGravAll Gravity is reduced for players and world objects.
Melee Only Only melee weapons are allowed.
No Adrenaline Level the playing field by disabling all adrenaline abilities.
No Health Pickups Health pickups are removed.
No Lock Players cannot lock onto enemies.
No Melee Melee weapons are not allowed.
Quad Jump Airborne players can jump three times instead of once.
Radioactive Players glow with radioactivity based on their score.
Random Pickup Respawn Pickup and powerup respawn delays are randomized.
Retribution Revenge is sweet! Take revenge on your killer to earn bonus points.
Rounds (Best of 3) A match is played as a series of three rounds. Each round is played with normal game rules. The team who wins the most rounds wins the match.
Rounds (Best of 5) A match is played as a series of five rounds. Each round is played with normal game rules. The team who wins the most rounds wins the match.
Speed Match All players have Adrenaline-enhanced Speed, all the time.
Third Person Only Force third person camera.
Vampire All players have the Vampire ability active all the time. There are no health pickups; get your health by attacking your enemies.
Volatile Ammo and health pickups explode when shot.
Wall Crawl All players have the Wall Crawl ability active, all the time.
Weapon Master All players start with the same weapon, randomly chosen. Once someone gets 5 kills, they are the Weapon Master. They receive a score bonus, and then a new weapon is selected. Only third-person perspective is allowed.

Unreal Tournament 3[]

Go to the settings while selecting a map and click on "Mutators" to bring up the list of mutators. Each gametype has their own selection of mutators, unlike previous games, and all mods will be visible at the bottom of the list.

Mutator Description
Big Head Same effect as FatBoy, but with the user's body instead of just his/her head.
Friendly Fire Shooting teammates damages them. (50% damage)
Only available in team games.
Handicap Provides armor and weapon bonuses to losing players.
Instagib Removes every pickup from the arena, and gives the players an Enhanced Shock Rifle, which causes players to explode into gibs instantly upon being hit.
Kills Slow Time Time slows down for a moment every time you kill an enemy. (Instant Action only)
LowGrav Reduces the gravity of the map.
No Hoverboard Players will not be able to use the Hoverboard during a match. Only available in VCTF, Warfare, and Greed.
No Orb Removes the Orb from the map. Only available in Warfare.
No Super Pickups Shield Belt, Berserk, UDamage, Invisibility, Invulnerability, Megahealth and Redeemers are removed from the map.
No Translocator Players will not be able to use the Translocator during a match. Only available in CTF and Greed.
SloMo Slows the game's speed.
Speed Freak Increases the game's speed.
Super Berserk Players fire at Berserk speed for the entire match.
Survival Spectating players spawn into the match after current players are killed (for the Duel gametype only).
Titan Allow players to become Titans.
Weapon Replacement Default weapon pickups in a level can be substituted with different weapons.
Weapons Respawn Weapons respawn instead of always being available. (Inverse of Weapon Stay)

Unreal Tournament 4[]

Mutator Description
Add Impact Hammer
Add Translocator
Allow Behind View
BigHead
Friendly Fire
Game Speed
Instagib
Leap Frag
Let's Bounce!
LowGrav
Arena/Weapon Arena
Weapon Replacement
Weapon Stay Off
Weapon Stay On

Trivia[]

  • The Spanish translation for Unreal Tournament hides the Instant Rockets, Impact Arena, and Minigun Arena mutators, requiring the modification of a file. In addition, due to a spelling mistake, the Chainsaw Melee mutator doesn't work and requires another edit. All these problems were fixed with OldUnreal version 469a.
  • In Unreal Championship 2, it is possible to unlock mutators by running through the Ascension Rites, the Challenges, or the Individual Ladders. They are usually found at the match that unlocks them.

External links and references[]

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