Skimmed the thread, so forgive me for not being able to contribute to the nudist tycoon concept. However, if you're interested in making a nudist-themed offline RPG and don't want to make it from scratch, I think I can help a little.
If you wanna make an RPG, I've had some experience with RPG maker. (2k, 2003, and a tiny bit of XP). It's absurdly easy to create a simple RPG with that. Though I have no coding experience and have not tried out the more complicated mechanics of those programs, but I made a stupid RPG way back in high school and that was sorta playable lol.
Older games made with like rpgmaker 2000 and 2003 have problems working in fullscreen on newer computers (last I checked was Windows 7), though windowed it runs perfectly fine.
I really quick google image search yielded this nude sprite sheet:
It's meant to be edited with clothes/costumes, but nahhhh lol.
Just putting that template into the program, and in seconds you can play test it and the character can walk around any walkable maptile.
There is another program called Gamemaker that people love too, but I have no idea how to use that. You can of much more with gamemaker, but I think there is some programming involved. Just some suggestions!