Custom Robo

"Custom Robo" is sort of a science-fiction action take on Nintendo's own "Pokémon" series, featuring collectible and battle elements. In the game’s story mode, you take on the role of a young boy who has just built his own toy robot named Ray. Together with your cousin, you head to the Robo Station to participate in a massive “Custom Robo” championship taking place at the local Holosseum. The ultimate goal is to hone your skills so you can defeat Mamoru, the champion among Custom Robo builders. The gameplay involves customizing robots and fast-paced action battles in tight 3D arenas. A sequel followed.