Battles can be played using Multi-Card Play or Nintendo Wi-Fi Connection and, if only one player has a game card, using DS Download Play. Players pit their Custom Robos against one another in fast-paced, melee-style combat. Each Robo can be outfitted with different parts, from arm-mounted guns and bomb launchers to specialized pod weapons that have their own unique behaviors. Some pods pursue the opponent, while others lie in wait for the enemy to draw near.