User blog comment:J. Severe/"Phineas and Ferb: Quest for Cool Stuff" officially announced; coming to 360/WiiU/Wii/3DS/DS August 13th/@comment-142.105.244.214-20130501013246/@comment-142.105.244.214-20130512233842

They were mixed because the AT2D game was short and it had low replayability.