Morton Koopa took the castle and Mario's gone, probably off doing plumbing in some other dimension. So Peach has to handle it herself, which in this game means walking right into every bad decision possible. The arcade setup is simple, you move her around and things happen. Things like a goomba grabbing her hair and she doesn't exactly fight it. The blonde princess thing is played straight, she's not a fighter, she's a reward.
The blowjob scenes are the main course. There's one where she's on her knees in front of a koopa troopa and the animation loops just long enough to feel wrong. The hentai style is rough, not polished, but that's almost better. It feels like something you'd find on a forgotten flash site from 2007. The sound design is basically nonexistent, just some wet noises that cut off abruptly. I kept waiting for a game over screen that never came, you just keep going until you're bored or finished.
I don't know why they made Peach's tits so big in this one. It's a parody, sure, but she looks like she'd tip over. The arcade elements are thin, mostly just clicking through dialogue and watching the next scene unlock. There's a moment where she's supposed to be sneaking past a piranha plant but instead she just... offers herself. Classic Peach. The whole thing is about five minutes long if you rush it, maybe ten if you let the animations breathe. Not that I'm complaining about the length, sometimes you just need a quick fix without a whole visual novel's worth of backstory about why the princess is a slut. She just is. That's the game.