For the bugs that Kyanite noticed, if you patch this onto an already-patched Mario Gives Up ROM, it should fix them. (This is a new version; the old version still had a problem with the second bonus stage).
Since I reviewed the second game, I should probably review this one.
Graphics: The graphics fits the style of Super Mario World really well (whatever if that was the intention of the creator or not.) Some levels like to mix other games like with a Donkey Kong Country level. Overall, the graphics are nice, but I feel like some it clashes with a SMRPG background, and SMW enemies, and foreground.
Presentation: The presentation is really well done. The sarcastic and witty messages is just the highlight. Initially, this hack was going to be a joke, and it definitely shows. I also enjoyed the intro as most hacks (or even games) don't a show an event leading up to the game through a title screen. Nice job there. I also enjoyed the cutscene before you face Bowser. It was really funny seeing Mario destroy Bowser's TV. One thing I'm not fond of is using different graphics for every cutscene. But that's just a nitpick, really.
Music: The music fits the level themes well. I enjoyed most of the songs used here. Nothing outstanding really. But the songs are good, and fit well, it's just the sequels have better songs.
Gameplay: The level design is really well done. Each level is very fun to play. I'll note the level "Diamond Mine" for having a really fun chase sequence with falling rocks. The music and the level design work so well together here that it makes for a fun and enjoyable experience. But, doesn't mean some sections aren't really hard. In the level "Fire Ground Cave" there is a section where you have to jump on dolphins jumping out of the lava. You have to play it for yourself to really see how difficult that part is. The overworld has a bunch of secrets that can lead to alternate paths, switch palaces, and warp stars. It works out really well, and the overworld is well designed, too.
Bugs: There are noticeable bugs that you may encounter while playing this game.
First off, if you go to "AREA OF BONUSES", you may have instant access to the key boss despite not pressing any switch.
When you start "Flat...that is all" You may get a boomerang power-up immediately. Though you are not supposed to.
In one of the BONUS levels, you may see a goal tape at the beginning of the level, and it is fully functional.
In the next BONUS level, you may see a glitched room at the end where you would fight a Big Boo. The battle is at least beatable.
Overall: This is a fun and enjoyable hack. With nice graphics, great presentation, good soundtrack, and fun yet challenging level. However to enjoy it, you must NOT take it seriously in anyway. As I said, this hack was originally a joke, so... yeah.
The bugs you may or may not encounter can be a issue which may hinder the experience. I'll give this a 7/10.