Might wanna take a look at Falcon 40B, or Falcon 7B... tbh I don't think 7B is up to the task, but 40B might be good enough, since it's open-source and you can run it locally (if you have the perfs for it), you won't need to deal with API filters if they ever become a problem, plus you won't be violating the liscence... which we are on a piracy website so I dunno how relevant that is
But the most important plus is that you could do some reinforcement training on the model to make it better at doing the translation, and can have more control over what the model outputs... there are plenty of already translated games, so maybe taking the original and translated version of those as training data could be a good idea to make it more suited to this work...
and it would be free.... well appart from the computer needed to run it, though I bet you can rent one online...
Edit: 40B needs 100GB of Ram... but 7B only needs 16... maybe with some reinforcement training it could work
Links:
Falcon 40B:
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Falcon 7B:
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