Tip: Remaking levels from other Mario games is strongly discouraged, especially popular ones (World 1-1 from SMB or SMB3, for example), as their over-presence in Mario games, official or not, often makes them uninteresting to play.
The design is questionable, it has some good concepts and ideas, but they're not well developed. The variety is pretty nice, each level has its own gimmick, like a time trial, a puzzle, and so on. Some are really bad though, like "Brouter Le Toit", where you have to nail the right timing to make the piranha plant not get stuck by the brown blocks activated by a P-Switch used to hit the block containing said piranha plant. This one here is one of the many good concepts in here, but it didn't work too well. Ah, and apparently there are no reset doors/pipes, so if you fail, you'll have to lose a life (or load previous savestate ;) ). Either way, I didn't like the design much as overall.
Aesthetics are mostly okay. No custom exgfx, only vanilla elements have been used. Most of the levels felt very empty, since they lacked a BG. While some are excusable, since they need a layer2 shenanigan, others aren't. Could've been better.
- As I said, there are no reset doors/pipes in puzzles, and in most of them you have to die to retry.
- "DONUT PLAINS 2" seems to be the last level of the demo. It can be completed only once though, but it has two exits.
- "Blue et Gris" seems to have a reset pipe if you fail the puzzle. It makes you die though.
- If you press certain directional buttons from "DONUT PLAINS 2" on the Overworld, you can go offtrack. You can even reach a ghost house, but it will lead you to level 0/100.
Overall, this hack is not very good. It has good ideas, but they're not well developed.