Postby Marina » Thu Jul 23, 2015 1:13 pm
LMAO I see what you did there.
Well, it's fairly easy: if you look in the graphics folder of SMBX, and go into the background folder, you'll see all the BGOs in the game. Those who have masks in that folder support masks and those who don't have masks don't support masks and will just be square in SMBX.