Warning: This review contains detailed and unrestricted spoilers.
Sky Island is a puzzle platformer starring a vaguely humanoid star who collects stars. If your mind isn’t completely blown yet, let me add that you can collect coins for points, Goomba-stomp enemies and fall to your death via a bottomless abyss. Too pedestrian? Well, Sky Island includes the ability to horizontally rotate your two-dimensional perspective to bypass obstacles and rearrange the landscape to your advantage. Similar systems have appeared in games like Super Paper Mario and Miegakure, but the central mechanic most resembles the one in Fez, a currently unreleased puzzle platformer starring a vaguely humanoid thing who collects cubes.
Co-starring some of the tetrominoes from Tetris!
Sky Island is a puzzle platformer in the same way that Braid (which stars a vaguely humanoid thing who collects stars and puzzle pieces!) is; namely that while platforming skills and killing enemies are required to complete the game, they’re mostly tangential. The focus is squarely on navigating and manipulating the environment in order to collect every star and then afterwards it shifts to reaching the checkered block that demarcates the end of each level.
To add yet another …

