Game has wonderful concept and story. Control are mediocre, I've seen worse mario fan games. There are definitely some broken things about the game, the negative coins don't do anything. I got soft locked by losing my power up when fighting bowser the first time then not being able to buy more because koopa sold out. I got soft locked by being stuck in the climbing phase. I got soft locked because the shortcut pipe malfunctioned and got me stuck in a wall. Also just some annoying collision issues like Mario sort of lightly bouncing off things and not really sticking the landing, and the bullet bills update each time you go around them, so this changes the fire rate and can be surprising if you don't realize what the bug is.
Overall, the perfect game idea for a hentai speed run, my fastest run so far is interrupting bowser before Peach puts it in her mouth. Satisfying game design, would be so much better if the developer fixed the game breaking bugs. I'm downloading this version, and hoping the game isn't abandoned.