Ever wonder what a lost Super Mario World prototype would feel like? Super Mario Wacky Worlds is this weird, unfinished demo that somehow leaked years later—three levels of janky but fascinating Mario physics. The controls are floatier than the original, and some of the level designs feel like rough drafts, but there’s charm in the weirdness. You’ll bounce off enemies at odd angles, stumble into hidden areas that might not be intentional, and just generally feel like you’re playing Mario through a funhouse mirror.

It’s short, obviously, since it’s just a demo—but if you’re into obscure gaming history, it’s a neat little time capsule. The music’s oddly cheerful for something that never got finished.