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.
Accepted, and fixed SA-1 compatibility. It works all fine now. Also converted to PIXI format (the giepy version is still included) due to LM 3.01 being incompatible with GIEPY.
Some minor details to add is that Yoshi still gets loose if touching the sprite when its readying to explode, and that when killed by Star there isn't any effect of falling off screen or stuff, with the sprite just disappearing.