Superfast Mario Bros. is a romhack of the original Super Mario Bros. game that can only be described as a chaotic experience. The game speed has been jacked up to ludicrous levels; the frame rule is now 1 frame instead of 21, and transitions are instant. And despite all that, the romhack is surprisingly playable, albeit barely. Not that it matters in a TAS setting, that is.

eien86 and Denial140 improve the previous movie by 1.13 seconds, thanks to better optimisation as well as new tricks.

WARNING: This hack can be very glitchy visually and occasionally have moments of flashing lights that may be uncomfortable to some viewers.

Watch this run being played back on a real console.