This game is amazing, what more do you want? It's good, it's free, it's one of the best 2D marios and it's not even made by Nintendo, go play it.
All my gripes with it are products of its time, you can't rebind the strange control scheme (jump on the up arrow is heresy) without pulling out autohotkey, it'd be nice if there was a way to set the default zoom to something that lets you see more of the level instead of having to hold the zoom out key, but when the game is this good despite the limitations of its engine and manpower behind it, who cares.
All my gripes with it are products of its time, you can't rebind the strange control scheme (jump on the up arrow is heresy) without pulling out autohotkey, it'd be nice if there was a way to set the default zoom to something that lets you see more of the level instead of having to hold the zoom out key, but when the game is this good despite the limitations of its engine and manpower behind it, who cares.