Mega Man StarForce: Leo - Nintendo DS Two co-existing worlds explore the real world in human form and transform into Mega Man to maneuver the virtual Wave World Each game version offers a unique powered-up transformation of Mega Man based on the respective elemental power and can unleash a special Star Force Big Bang attack Combine Battle Cards of the same type to unleash consecutive attacks Dynamic Brother Band system adds up to six friends to help each other in battles share Use Battle Cards to receive stat boosts and other special benefits Each character has their own customizable Personal Page where Battle Cards and information can be viewed and traded with friends to compare progress Two co-existing worlds explore the real world in human form and transform into Mega Man to maneuver the virtual Wave World Each game version offers a unique powered-up transformation of Mega Man based on the respective elemental power and can unleash a special Star Force Big Bang attack Combine Battle Cards of the same type to unleash consecutive attacks Dynamic Brother Band system adds up to six friends to help each other in battles share Use Battle Cards to receive stat boosts and other special benefits Each character has their own customizable Personal Page where Battle Cards and information can be viewed and traded with friends to compare progress