Mystery Gift menu map corruption engine quirk (Generation II)
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Published on ● Video Link: https://www.youtube.com/watch?v=UJW0k2YqTno
Notes: Using an arbitrary code execution item to open the Mystery Gift menu while already in game can corrupt the current map's layout upon closing the menu (lower the amount of walkable space/affect height/width?). This worked in Goldenrod Department Store, but not in the Pokémon Center.