Calumon is an enigmatic Digimon that helps your character to Digivolve. You can also fling items such as baseballs, cannonballs and lightning strikes at opponents.

D-Spirit balls will appear briefly throughout a match. Victory or defeat depends on your ability to grab as many of these as possible.

Single-player mode is essentially a ladder that begins with a weak opponent in Origin Town. You'll battle Agumon while avoiding scurrying Gotsumon in Ancient Shrine, dodge Renamon's quicksilver attacks at Oriental Gate and square off against Guilmon at Volcanic Island. You must overcome each area's unique hazards if you want to save the world.