The game starts with an opening scene depicting the player stealing equipment from the strongly guarded headquarters of Team Snagem, and then proceeding to flee with an Espeon and Umbreon as the base explodes. With the help of a young girl named Rui, Wes was able to find the Pokémon whose hearts were sealed and surrounded by a purple aura and use the Snag Machine to rescue Shadow Pokémon and restore them to normal. Another team, Cipher, was responsible for corrupting the hearts of Pokémon and giving them to Trainers. In this game, the player character Wes was formerly a member of an organization called Team Snagem, which had obtained a machine that allowed the user to 'snag' another Trainer's Pokémon as though it were wild. The game followed the basic stadium style battling found in the Pokémon Stadium games, but extra gameplay was included in the form of an RPG story mode comparable to the core series, which allowed Trainers to catch Generation II and Generation III Pokémon in the desolate region of Orre. Pokémon Colosseum (Japanese: ポケモンコロシアム Pokémon Colosseum) was released on the Nintendo GameCube on Novemin Japan, Main North America, and in Europe.