Tip: If you give a Muncher tile custom graphics, it will still act like a coin when a silver P-switch is active, whether it looks like a coin or not. So make sure to use ExAnimation if there's a silver P-switch in the area.
I'll be able to actually post the full rom hack once I actually fill in the levels so that will be better actually. But I need to set up the levels and such. I want to keep the SMB 2 and 3 play style intact with a few new tweeks.
I've done it guys. I updated Super Mario Bros DX with a HUGE change. This version is called Super Mario Bros Special Edition and celebrates the 25th of the first Super Mario Bros. After World 8 you play the levels from SMB 2 Japan so go to Wentwood 2 and look for it in the files uploaded section. See the read me for it if you guys want to refine the game to add SMB 2 J 6 - 8. But the official 2nd quest is now in play. I used Peter AC's Lost Levels 2 patch to re swap levels.