Angry Birds Space easier to aim the birds. Some pigs are in space bubbles, and when the birds break them, they will freeze and smash unless they get into a gravity field. Like in "Angry Birds Rio", "Angry Birds Space" features boss fights. In February 2012, Rovio announced a new game in the "Angry Birds" series to be called "Angry Birds Space". "Angry Birds Space" launched on March 22, 2012, and features elements from the preceding "Angry Birds" games as well as new gameplay mechanics. The game initially contained 60 levels with additional levels available as free updates or with in-app purchases. For
Angry Birds (video game) called the game "an addictive, clever, and challenging puzzler", and "Pocket Gamer's" Keith Andrew said "Angry Birds" is "a nugget of puzzling purity dished out with relish aplenty". Jonathan Liu of Wired News wrote that "going for the maximum number of stars certainly adds a lot of replay value to a fairly extensive game". Reviews for the first versions of the game that did not use a touch-screen, the PlayStation 3/PSP version and the Windows version, have also been positive, but with some disagreement over the different interfaces. Will Greenwald of "PC Magazine", in his review of the PlayStation Network