There have been reports suggesting that Namco Bandai may be bringing the arcade title, Dragon Ball Heroes, to the 3DS in Japan: it's a Japanese card-based arcade game, originally released in late 2010 and developed by Dimps.

The 3DS version will apparently be called Dragon Ball Heroes: Ultimate Mission, and is said to include a story mode, wireless connectivity and a form of compatibility with the arcade version of the game, a feature that is likely to be removed should the game make it to the West. Ultimate Mission will potentially boast a huge roster of over 200 characters and 800 cards to use, while the gameplay itself will see players using their 3DS stylus to control their deck of five cards to destroy the enemy in battle.

It has been rumoured that Ultimate Mission is set to release in Winter throughout Japan, but no word as yet whether or not it will ever make it overseas.