Definitely a top notch hack with mostly excellent level design- just felt it gets a little too hard for its own good towards the end (but never to the point where I wanted to drop it like 95% of the SMW rom hacks I have played). This creator clearly understands what makes the traditional mario games work. Also, Mario says "hell" a lot in the cutscenes and that alone is worth seeing for itself. Played through on a Super Everdrive X3 and didn't run into any issues along the way.