I was noticing a habit with this game. Most levels have the same kind of length. First Half, Go in Pipe, Second Half, Exit Pipe, Touch Checkpoint, Third Half, Go in Pipe, Fourth Half, Exit Pipe, Beat the Level. I've seen way too many levels in this hack that sticks to this formula and it gets very tiresome. They seem to be long for the sake of being long.
Other than that, this is a great hack overall! Loved the level gimmicks, music, custom sprites, etc!
This Foo caught my attention. I think it was accidentally shifted a step up or deliberately put like that. It may be very unnecessary information, but it just caught my attention Other than that, this hack is really cool. Good job!