Play Super Mario World (lost levels prototype) Online

Ever play Super Mario World so much you could breeze through it blindfolded? This prototype is like someone shuffled all the levels while Nintendo wasn’t looking—same bright colors and happy music, but suddenly everything’s just… meaner. Platforms vanish faster, enemies lurk in places they shouldn’t, and I swear some jumps require pixel-perfect timing just to mess with you.

It’s weirdly fun spotting the differences, though. There’s a version of Yoshi that spits fireballs differently, and some power-ups behave in ways that feel almost glitchy (but probably weren’t). Feels like digging through old sketchbook pages where the team was still figuring things out. Definitely not for casual play—more like a curiosity for Mario nerds who want their nostalgia with extra frustration.

Fair warning: That "lost levels" tag isn’t just for show. You’ll die. A lot.