Transformers Rise of the Dark Spark - Nintendo 3DS Go Beyond the Movie: For the first time ever, fight your way through both Earth and Cbybertron universes in an unforgettable battle to secure the Dark Spark Over 40 Playable Characters: Including Optimus Prime, Bumblebee and Megatron Change Form Anytime: Switch between robot and vehicle form on the fly Epic Multiplayer Battles: Expanded four-player co-op online escalation mode with new upgradeable defenses and challenging Power Foes New Unlock System: Leveling system spans campaign and escalation, allowing players to unlock rewards that will aid progression in both modes