As the title says. (Correct me if this is in the wrong category.)
I have been taking Latin classes for over 2 years now. I guess I am decent in speaking. Latin as you know is not a language today that people speak, but some people understand it better than english.
Is it worth it to translate games into Latin?
No, Latin isn’t widely spoken anymore. I’d use your Latin skills to learn other languages.
Vale! 
Yeah, I agree with @Crazedbrick1. I don’t recall seeing Latin as a option for translation anywhere on the internet. (I could be wrong though) It would just seem weird to me lol. (I have no problem with people learning Latin though.)
However it would be very good practice for you. I just don’t think it would benefit your game’s community much
The other guys have pretty much said everything, translating a full game to Latin, is probably not the best idea, but maybe if you add secret words as in statues, hidden jokes or something like that as a secret for the player, it could be interesting.
Other than that, you could do it if you want, but probably not the best idea.