I was searching on Ebay for valuable GBA games (verdict: if you see Classic NES SMB or Donkey Kong, buy it, but you knew that) and auctions for these kept popping up.
After a bit more searching, attempting to find out what the Hell these are, all I know is that they are hacks of Pokemon Emerald that are available in cartridge format in China, of course. And Chaos Black is pretty funny because it has a Pokemon-style drawing of Chaos from Sonic Adventure on the front of it.
Anyone else know anything about these hacks?