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| Mutator | Author | Info | |
|---|---|---|---|
| Radar | Unknown | 2 mutators | |
| Radiated | Unknown | 1 mutator | |
| Random Spawn Locations | MrLoathsome | 1 mutator | |
| Random Weapon | Unknown | 1 mutator | |
| RapidRinger | Unknown | 1 mutator | |
| RapidSaphyre | Unknown | 1 mutator | |
| Ratio's Jetpack | Unknown | 1 mutator | |
| Real Crouch | Unknown | 1 mutator | |
| Real Speed | UT_Killer | 1 mutator | |
| RealSkin | Unknown | 1 mutator | |
| Realsniper | Unknown | 2 mutators | |
| Realworld | Unknown | 2 mutators | |
| Redeemer 2k3 | Unknown | 2 mutators | |
| Redeemer to Golden Reaver | Zacman | 1 mutator | |
| Redeemer2k3 | Unknown | 2 mutators | |
| Redeemer2k4 | Unknown | 2 mutators | |
| Redeemer2k4 | adding the following | 2 mutators | |
| RedeemerMania | Unknown | 4 mutators | |
| RedeemTC_ASC_v1 | Unknown | 1 mutator | |
| RedeemTeam CoN_v3 | Unknown | 1 mutator | |
| RedeemTeamC | Fuzzy | 1 mutator | |
| RedeemTeamCv2 | Fuzzy | 1 mutator | |
| Reduce sniper ammo | Unknown | 1 mutator | |
| Reduce Sniper Damage | Unknown | 1 mutator | |
| ReduceBalls | Unknown | 1 mutator , 1 weapon | |
| Regensb100 | Unknown | 2 mutators | |
| Relic Classes | Mason Pairish | 1 mutator | |
| Relic: Blink | Diatonic | 1 mutator | |
| Relic: Disguise | Bog_Wraith | 1 mutator | |
| Relic: Khishyje | Unknown | 1 mutator | |
| Relics | Epic Games | 6 mutators | |
| Relics HUD Patch | Unknown | 1 mutator | |
| Relics2 | Unknown | 6 mutators | |
| Relocate Killer | SmasKenS | 1 mutator | |
| ReportDirection | Olethros | 1 mutator | |
| Resurrector | Unknown | 1 mutator | |
| Resurrector--Pheonix Rewritten | IP | 1 mutator | |
| Revenge | Unknown | 1 mutator | |
| Revenge 2 | Unknown | 1 mutator | |
| Reverse CTF | Kenneth "Shrimp" Watson | 1 mutator | |
| Reward Mod | Unknown | 1 mutator | |
| Rex: Rextended CTF v2-2 | Unknown | 1 mutator | |
| Rextended CTF v2-4 | Unknown | 1 mutator | |
| Rextended MH Lite v1 | Unknown | 1 mutator | |
| Rextended UT v2-5.2 | Unknown | 1 mutator | |
| RFARifleV1 | Unknown | 1 mutator , 2 weapons | |
| RidiculousDeemer Arena | Unknown | 1 mutator | |
| Ripper Enhanced | Aspide | 1 mutator | |
| Robin Hood | SmasKenS | 1 mutator | |
| Rocket Booster | default and will only | 1 mutator | |
| Rocket Jump Enabler | Unknown | 1 mutator | |
| RocketArenaMutator | Unknown | 1 mutator | |
| RocketCTFBoost v2.7a | iloveut99 | 1 mutator | |
| RocketCTFBoost v2.7b | iloveut99 | 1 mutator | |
| RocketJumpingArena | Unknown | 1 mutator | |
| Rocketsut | Parallax Software or | 4 mutators , 14 weapons | |
| RocketsUT110beta5 | Wormbo | 5 mutators , 18 weapons | |
| RocketsUT110beta5 | Wormbo | 5 mutators , 18 weapons | |
| RocketX | Unknown | 2 mutators | |
| RocketX-RB | Unknown | 1 mutator | |
| RocketX1 | Unknown | 1 mutator | |
| RocketX2 | Unknown | 1 mutator | |
| RocketX3 | Unknown | 3 mutators | |
| RocketX3c | Unknown | 1 mutator | |
| RocketX3E | Unknown | 1 mutator | |
| RocketX3ERMV12345 | Unknown | 2 mutators | |
| RocketX3ESPV1 | Unknown | 1 mutator | |
| RocketX3F | Unknown | 1 mutator | |
| RocketX3F3Beta | Unknown | 3 mutators | |
| RocketX3FRM123 | Unknown | 3 mutators | |
| RocketXAA | Unknown | 1 mutator | |
| RocketXAE | Unknown | 2 mutators | |
| RocketXB2W | Unknown | 2 mutators | |
| RocketXHoF | Unknown | 1 mutator | |
| RocketXHOFPrototype | Unknown | 1 mutator | |
| RocketXHoFV2Beta1 | Unknown | 1 mutator | |
| RocketXRM | Unknown | 1 mutator | |
| RocketXSIFV2Beta1 | Unknown | 2 mutators | |
| RocketXTTS | Unknown | 2 mutators | |
| RocketXum3 | Unknown | 1 mutator | |
| RocketXvm | Unknown | 1 mutator | |
| RocketXWINGS | Unknown | 1 mutator | |
| Role Playing UT | 100 to get an actual | 1 mutator | |
| RoseBum Alien | Unknown | 1 mutator | |
| RRFG | None yet | 1 mutator | |
| Rune | Unknown | 1 mutator | |
| RuneZ v1.0 | Unknown | 1 mutator | |
| RuneZ v1.4 | Unknown | 1 mutator | |
| RuneZ6 | Unknown | 1 mutator |