Custom Robo Arena is a role-playing game developed by Noise and published by Nintendo for the Nintendo DS, released in 2007. Players design and control miniature robots and engage in battles in diorama-sized arenas. The game includes a compelling single-player campaign and a multiplayer mode where players can battle each other with their custom robos. Its strategic gameplay, coupled with collectible and customizable aspects, makes it a unique addition to the DS's library. The game combines action and RPG elements and is well-regarded for its depth in customization.