Game Freak — the primary developer of the Pokémon games — suffered a massive data breach. Pokémon creator, Nintendo, confirmed this leak on Sunday, which involved not only a massive amount of personal information, but supposed unused concept art and lore stories involving the franchise.

Game Freak, the primary developer of Pokémon games, has suffered a serious data breach. Employees’ personal details have been published online, as well as a huge trove of documentation on Pokémon, including source code for complete builds of past games.