What's your native language? Western European languages seem feasible, but I'm not so sure about e.g. Japanese or Russian, since translation would rely on the model's capabilities.
I tested this a little when a comment asked if they could play the game in there native language.
- I asked a NPC with goggle translated Russian and used the modern Latin/Roman characters and the NPC seemed to understand and replied just fine back in English.
- I asked them to speak in Russian and they did, but replied in non-Cyrillic Russian, which is to say they used whatever modern Latin/Roman font in the game.
- I noted the Nemo model could still understand Cyrillic if copy pasted into the user input/text bar, despite the Cyrillic characters not being supported and being invisible.
- I then asked for the NPC to reply in Cyrillic, and they did, but it wasn't visible so I don't know what was said unless I pull the dialogue from NPCmemories and translated it.
- NPC mentioned they weren't very good,or might make mistakes, but they seemed to be doing alright.
- I haven't checked but I think the above would apply to other languages that use different characters. Ex: Japanese with Hiragana and Katakana not being visible unless in Romaji. I have no idea if the model can even understand Kanji.
My language is Brazilian Portuguese.
I also tried other Latin languages, and they only responded in English. The city guard, in fact, refused to speak my language. Unlike the other NPCs, he apologized and said he "didn't understand my French," but... I was speaking Portuguese!
Confused, I didn't try again and continued speaking in English.
Regarding the option to disable real-time;
I still think it goes by pretty quickly. I tried searching the mines while a bit stronger, and it took me 3 game days to go back and forth. That seems like a long time, even if I changed the in-game time to real-time meters, 3 days seems like a lot.