Outside of the battle arenas, Custom Robo Arena plays like a role-playing game in which players walk through the futuristic city setting and interact with other characters as they struggle to win the Custom Robo championship. The multiplayer aspect pits two players against each another in the holosseum. Battles can be played using Multi-Card Play or Nintendo Wi-Fi Connection and, if only one player has a gamecard, using DS Download Play. Special powers/weapons/moves/features: Each Custom Robo is made up of a number of distinct parts: a body, legs, a gun, a pod pack and a bomb launcher. Each of these parts provides unique abilities. For example, guns have different ranges and effects, bombs have different blast radiuses and pods have different behaviors. Any part can be attached to any Custom Robo body. Players construct their ideal fighting robots and then take them into the holosseum to fight. Battles are a combination of the player's skill – not only at fighting but also at designing a superior Custom Robo.