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.
Denial140, negative_seven, and chatterbox team up to beat this romhack in a little over a minute with the use of warps. We also have a longer warpless run for those that want to see more of the game.
WARNING: This hack can be very glitchy visually and occasionally have moments of flashing lights that may be uncomfortable to some viewers.