i found this hack to be really fun and full of cool levels. its not that hard and the levels arent to long. as im always looking for "shorter" and quick to play through hacks, this hack was right up my alley.
Would recommend it to beginners trying to break through the next step.
Levels are short, but may have some challenges like a eventual key jump, and some shell tech.
Experienced players will have no problem on beating this, and might as well complete it in a single seating if wanted.
As a downside, the special world feels incomplete. Theres no boss at the end, no switch, beating it rewards the player with nothing... maybe a mushroom if the player really wants it.. but thats it.