Huizong/Meimei Crystal Glitch

Huizong Crystal Glitch is a severe game-damaging bug in PS Vita and 3DS versions of Theory World 3: Lesser and Greater

Glitch
If Huizong picks up a crystal and breaks it as he picks It up, he will be holding an invisible crystal, which has no data, throwing this crystal can glitch Huizong's sprite or change him into recolored things, such as a purple Sophie, a lot of awkward things can happen, but varies, but it always ends with the game crashing, a rare outcome is that it can delete or corrupt save files, and very rare outcome is that it alters your game data in such a way is when you load the save screen, it crashes the game, leaving it impossible to get past the main menu, an extremely rare outcome is it can brick the game and even the console, this glitch should not be tried on actual hardware

Patch
Game saves, game carts, and consoles were bricked upon repair by those who tried the glitch, but it was fixed in Ver 1.2.

Trivia

 * It is considered the most damaging bug in the Theory series.