To coincide with the North American release of Mario Super Sluggers in August 2008, an online card game was created on . The cards to collect for it were found on kid-friendly sites like 4KidsTV and Nick.com and even YouTube (mainly to promote the Mario Super Sluggers game itself).

To coincide with the North American release of Mario Super Sluggers in August 2008, an online card game was created on . The cards to collect for it were found on kid-friendly sites like 4KidsTV and Nick.com and even YouTube (mainly to promote the Mario Super Sluggers game itself).