Custom Robo Arena marches onto Nintendo DS as a one-on-one robot fighting game where each combatant comes equipped with a distinct assortment of armor, guns, missiles, and bombs. The goal is to win the Custom Robo Championship by defeating opponents using a combination of gear and skill. Battles are viewed from the handheld's top screen, while the touch screen displays the custom-designed robot's exoskeleton and armaments. While each clash takes place within holographic arenas, robot pilots can visit a futuristic city in between matches to interact with the locals, purchase items, and more. Head-to-head battles against friends are also supported via Wi-Fi, Multi-Card, and DS Download options.