Anyone who spent a decent amount of time generating locally (not the crap this other guy posted) knows how much work can go into a project like this as it's so much more than just writing prompts and clicking on generate. It's impossible to make a good game out of random generated images without the use of other, much more time consuming tools. Those who say otherwise simply haven't got the slightest clue.
"Oh look, I've made these garbage generic images so making a proper game is easy and it only takes me 15mins" - Said nobody with knowledge on the matter, ever.