I was making a sky-themed level, and I wanted to put some tilting mushroom platforms in it. I put a tilting mushroom platform over a normal mushroom platform, and for some reason, you can see a few pixels from the tilting platform going over the normal platform. I tried many ways to make the tilting platform go under, but it didn't work.
_________________________
Check out "New-ISH" Super Mario Bros. DS HD*!!
Renewed Super Mario Bros. still exists, though.

because Sprites are drawn over tiles, for "proof" try putting a goomba on top of a brick block, the goomba will be on top, so without asm hacks, you can't put tiles behind a sprite
_________________________
Here's my MvL Hacking thread

Consider joining NSMB Central - the NSMB modding Discord Server! Also, be sure to check out the new wiki!

#HakingNoMore

Some sprites allow Z-Order changing, however I don't think the mushrooms have it. That'd require ASM.

You are never able to put blocks over sprites.

All 3d models or to be exact everything that is made from polygons is drawn infront the background 2d layers like the two background layers and the tileset layer.

Only OAM sprites go above that 3d layer.
_________________________
GitHub - Kuribo64 - YouTube