XBLA Fans, is the result of developer GarageGames' recent and rocky history.
Between the closure of GarageGames' InstantAction service in 2010 and the company's revival earlier this year, it seems the IP rights to Marble Blast Ultra have been lost in the shuffle. GarageGames, now a subsidiary of Graham Software Development, only owns the rights to the Torque game engine, which powers Marble Blast Ultra. Rights to its games are still property of InstantAction Holdings. As such, GarageGames stopped offering its old titles after its transition to new ownership in February.
In a February forum post, GarageGames CEO Eric Preisz said that it was "unlikely" that the studio would reacquire the rights to its games.