Black 2 kaizo is a doubles only difficulty hack of black 2 that changed trainers, Pokémon, moves, encounters, etc. It is not made by the creator of the other kaizo games. There is even a triples only variant known as white 2 kaizo (not to be confused with that masterpiece of shit that was Qualix’s White 2 kaizo 2021), which isn’t as good but is still solid. It has some wierd stuff like grass in pokecenters and gym leaders and champions as random trainers. One gripe is how the game shoehorned vgc players like s*yvey prick. It’s a pretty okay game 6.4/10.