High Quality Content by WIKIPEDIA articles! Marble Blast Ultra (commonly abbreviated as MBU) is a 3D puzzle/action game involving a marble developed by GarageGames. It was released on January 25, 2006 for the Xbox 360 via Xbox Live Arcade. It is the sequel to Marble Blast Gold. It features 60 brand new levels, enhanced graphics, 2 new power-ups and a multiplayer mode. A PC port of the game under the title Marble Blast Online was playable exclusively at InstantAction until the website was shut down. As of year-end 2010, Marble Blast Ultra has sold over 756,000 copies. In February 2011 the game was delisted from XBLA.