Pokémon Colosseum is a role-playing video game in the Pokémon series. Unlike previous titles' random encounters with Pokémon, Colosseum allows the player to steal ("snag") the Pokémon of other Pokémon Trainers. The game also features single-player and multiplayer battle modes. Set in the desert region of Orre, the player controls Wes, a former member of Team Snagem. Throughout the game, Wes rescues "Shadow Pokémon"—Pokémon who have had their hearts darkened by Team Cipher, an antagonistic organization—via snagging. Rui, a non-player character, serves as Wes's sidekick and identifies Shadow Pokémon.