Dokapon Kingdom

Dokapon Kingdom is a role-playing game released for the PlayStation 2 and Wii -- the former in Japan in 2007 and North America in 2008, and the latter in both areas in 2008, as well as Europe in 2010. It involves up to four players going on a mission, fighting roshambo-style battles, gaining money, and leveling up.

This collab remains the longest the guys' have ever done, both in episode count and in upload period, with 144 episodes, of which were uploaded over the span of 4 years.