I just played the beta/demo for myself after having watched Stiviboy's video of this hack earlier. Physics-wise, this does indeed feel like SMB3, but the overall presentation reminds me more of New Super Mario Bros. due to the visuals and Star Coins. The NSMB influence is NOT a bad thing though. It kinda makes me want to hear more 8-bit versions of NSMB songs later in the game.
The only complaint I have about this is that, when a kicked object is allowed to go off the left side of Screen 00, the game freezes. I know this is a side-effect of the Shell-Collectible Coins/Yoshi Coins patch. If you know enough ASM to try debugging that, please do so. I, along with another user, have commented about the freezing on the patch's submission page.
EDIT: While recording a Let's Beta-Test video for this, I found a glitch in the third level. Upon re-entering the level from the checkpoint, you see a cutoff wall of dirt covering the right-hand side of the screen for a second after the level fades in. It disappears too quickly to determine if it's game-breaking, but such graphical gaffes kinda break up the overall beauty of the visuals.
Here's the video I was talking about.
Quintesson Judge: Silence, or you will be held in contempt of this court!
Hot Rod: I have nothing
but contempt for this court!
- Transformers the Movie (1986)