Ultra Mario World - Demo 1 is one of those weird, early SNES prototypes that feels like a rough draft of the classic we all know. You’ve got Mario running and jumping through familiar-looking levels, but some of the physics feel just slightly off—like the spin jumps don’t quite have the same weight. There’s a weird charm to it, though, especially if you’ve played the final version to death and want to see how things started.

You’ll recognize a few level layouts, but some enemies behave differently, and the colors aren’t as polished. It’s a neat little time capsule for Mario fans who dig behind-the-scenes stuff. Just don’t expect it to play exactly like the finished game.