| Mutator | Author | Info | |
|---|---|---|---|
| 404_GIANTS_b1 | shiftre | 1 mutator | |
| Bounty | Bane,Killarny | 1 mutator | |
| ColorInstaGib | Chris "Nemesis" Gibbs | 1 mutator | |
| DeathCounts | Unknown | 1 mutator | |
| Golden Gun Arena | Unknown | 1 mutator | |
| MiniGun Madness V2.0 | Unknown | 1 mutator | |
| Mp1 | Unknown | 6 mutators | |
| Relocate Killer | SmasKenS | 1 mutator | |
| U4e Halloween99 Special Edition | Unknown | 1 mutator |
Unreal Tournament / Mutators / 1999 / October
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