OmegaT
A desktop CAT tool with translation memories, glossaries, fuzzy matching, machine-translation plugins, and many document formats.
Why use it
Freelancers and small teams can preserve terminology, reuse repeated text, and process sensitive scripts offline without license cost.
Where it fits
Use art, animation, audio, levels, and narrative to make the game easy to read and its world convincing.
What to check
Its interface and collaboration are traditional, game-specific formats often need preprocessing, and machine translation, fonts, and context still need human review.