Play Mario MI41 (SMB1 Hack) [a2] Online

Game Overview

Mario MI41 (SMB1 Hack) [a2] is a romhack that remixes the original Super Mario Bros. levels into something... different. The first thing you notice is how the familiar layout of 1-1 is gone—instead, you're dodging weird enemy placements and awkward jumps right from the start.

It's not just harder, it's unpredictable. Some jumps feel unfair, like the designer just wanted to mess with you. But there's a weird charm to it, like stumbling through a glitched version of your childhood game.

If you're into romhacks that twist the original into something janky but fresh, Mario MI41 (SMB1 Hack) [a2] might be worth a look—just don't expect a polished experience.