New SMB1 hack by NesDraug, with cool features and nice level design.
I find it fun, so I started making this fastest any% TAS (warps allowed). Unfortunately it doesn't show the new Bob-omb power-up, because being small-only is faster for the any% TAS.
The hack has faster running speed and higher bounces off enemies, therefore more glitch potential. My favorite trick is clipping through the ceiling in 2-1.
Enjoy. :)