Play Super Mario World - The Second Reality Project 1.5 Online

Game Overview

Super Mario World - The Second Reality Project 1.5 is the kind of romhack that makes you go, "Wait, was this always here?" It starts off familiar—same green pipes, same Yoshi sounds—but then you hit the first level and realize something's... different. Maybe it's the way platforms move in patterns you don't remember, or that one enemy that definitely wasn't in the original game. Before long, you're grinning at how cleverly it plays with your nostalgia while still feeling like a proper Mario adventure.

The level design walks this perfect line between "Oh, I know this trick" and "Wait, how was I supposed to—ohhhh." Some jumps will wreck you the first time, but in that satisfying way where you immediately want to try again. And the new mechanics? They don't just feel tacked on—they actually make sense alongside Mario's classic moveset. Found myself accidentally doing spin jumps way more than usual, which says something.

If you've ever replayed Super Mario World enough to know where every single invisible block is, this mod is basically someone handing you a brand-new SNES cartridge you somehow missed as a kid. It's that good.