A challenge called the Nuzlocke Challenge allows players to only capture the first Pokémon encountered in each area. If they do not succeed in capturing that Pokémon, there are no second chances. When a Pokémon faints, it is considered "dead" and must be released or stored in the PC permanently. If the player faints, the game is considered over, and the player must restart. The original idea consisted of 2 to 3 rules that the community has built upon. There are many fan made "Pokémon" games that contain a game mode similar to the Nuzlocke Challenge, such as "Pokémon Uranium".