We found 1 Reddit comments about Fractal Mode (Mode, No. 2). Here are the top ones, ranked by their Reddit score.
How has nobody mentioned Piers Anthony yet? Pornucopia is exactly what you think it is, and the Mode series (Virtual Mode, Fractal Mode, Chaos Mode and DoOon Mode is full of fucked-up naughty stuff (like the protagonist getting gang-raped when she was 12 or so).
Don't let the Xanth series fool you -- Anthony's one dirty old man.