In the 1,000th issue of "Famitsu", Miyamoto expressed his interest in making a sequel to "Super Mario Galaxy". The game was originally called "Super Mario Galaxy More" during development, and was initially going to feature variations of planets featured in "Super Mario Galaxy". Over time, new elements and ideas were brought into the game, and it was decided that the game would be a full sequel. "Super Mario Galaxy 2" was announced during the Nintendo conference at E3 2009 held in Los Angeles. It was released on 23 May 2010 in North America, 27 May 2010 in Japan and on 11 June 2010 in Europe. The sequel has been met with as much critical acclaim as its predecessor, and has sold 6.36 million copies worldwide as of April 2011.