Very interesting experiment, though I would probably opt for one of the more advanced voice models out there for any continuation (if you still want to keep tts). For game dialogue as well it would probably be better to have multiple voices rather than reading out the speaker each time. The AI art actually came out pretty decent, though I think it could use a little upscaling and cleanup for a final asset
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Oh so the TTS is actually just using the installed default voice on your windows machine, so install a better one :D ! It's mostly there for blind accessibility though! I'm part of the game dev community that makes blind accessible games.
I've used more advanced voices before and... yeah it's just VERY hard to do it in a short period of time. So I just used an accessibility DLL that I had used for previous projects that was good enough for some of my friends who aren't sighted can play as well.
And yeah some of them came out great, some not great, but they came out wonderfully for a jam I think.