I think you should try to do a NSFW Pokemon game, because they are actually not a lot of games currently in the market and this few games are already abandoned. Pocket Campfire for example was good, but the developers left it for like 5 years now.
What a genre of that game must be, maybe for less memory weight i will use AI images (with simple animation) except 3d hentai movies. but it will be simple game, because Undertale parody: chapter 1 isn't done