The Castle or Ruins in the third stage of each world in Super Mario Land. These graphics change the background colors, I don't recommend using background images.
This Submission can't be accepted due to multiple reasons:
Major Reasons: -A Palmask File is missing.
This means that the inserting the palette overwrites every color, which is no-go.
-The map16 file overwrites page 02 by default.
As stated in the submission guidelines, overwriting the first 3 Map 16 pages (0x00, 0x01, 0x02) with your own tiles leads to a rejection as they are used by the vanilla game.
Minor Reasons which still contribute to the rejection:
-Your Sample Level asks for an extra gfx that is not inculded (ExGFX9E)
-The Foreground Graphics are not inside a Foreground GFX Slot, even though there's no reason as to why they couldn't be.
-You're overwriting the colors usually reserved for backgrounds, even though the used colors would easily fit in the ones reserved for foreground tiles. (See this guide for reference)
-Your Taglist is using wrong tags, see this list for available tags