- Epic Games/Digital Extremes/Legend Entertainment: Original English/German/French/Spanish/Italian localizations
- Smirftsch: Initial project coordination.
- Victor Delacroix: Early project coordination.
- Hellkeeper: Early project coordination.
- Neon_Knight: Current project coordination.
- Buggie: Localization templates for all 15 languages.
- German: Smirftsch, Jan "eGo" Urbansky, ividyon and Sly. (review and contributions), hosterholz (additional contributions)
- French: Hellkeeper (Unreal and UT reviews), Rackover/Louvenarde (additional contributions)
- Spanish: Neon_Knight (Unreal and UT reviews), rarsonic (additional contributions)
- Italian: Alby1987 (UT review), UBerserker, BBG-(DOG)-, Lowenz and TaglesMalsto (additional contributions)
- Russian: u.HighPriest (Unreal localization), Reborn (Unreal and UT reviews) Skaarj ZR, FLAK, ArchGrey, Sergei and arctic0cat (additional contributions)
- Polish: Victor Delacroix (Unreal review), yrex. (additional contributions)
- Portuguese: Nahand (Unreal localization), BIr4 (Unreal review), Naruto_9 (additional contributions)
- Hungarian: Relaks (Unreal localization) Victor Delacroix, MakeMeUnreal and Gabor Kovacs (additional contributions)
- Czech: tomcat (Unreal localization), Victor Delacroix and Nicola (additional contributions)
- Swedish: ElectricIce (additional contributions)
- Catalan: rarsonic (additional contributions)
- Dutch: Rubie (Unreal and UT review), bennytrt and Hyper (additional contributions)
- Norwegian: Excalidar (additional contributions)
- Japanese: Vapor Mermaid (localization retriever)
- Greek: LDinos (localization author)
- Epic Games/Digital Extremes/Scion Studios/Streamline Studios: Original English/German/French/Spanish/Italian/Korean localizations
- Neon_Knight: Project coordination.
- Buggie: Localization templates for all 15 languages.
- Rasiel: Original Russian localization
- Cobalt: Russian, additional contributions