Play Mario Hack 63 (SMB1 Hack) Online

Game Overview

Mario Hack 63 (SMB1 Hack) is exactly what it sounds like—someone took the original Super Mario Bros. and twisted it into something new. The first level looks familiar, but then you notice the pipes lead to weird places, and the enemies don’t always behave like they should.

Some jumps feel just slightly off, like the physics were tweaked in a way that makes you second-guess every move. The custom stages are creative, but a few of them have cheap deaths hidden where you least expect them. It’s not unfair, just… different.

If you’ve played the original to death, Mario Hack 63 (SMB1 Hack) gives you a reason to pay attention again, even if it’s just to see what weird thing comes next.