Game Description:It's all about the two-by-two! Explode chains of differently colored blocks by matching up two-by-two blocks of the same color. Large chains create level-ups and power-ups, both of which enhance your gameplay as you make your way through the unique themes and backgrounds. Four different themes are both interactive and exciting, from cells to dream-like landscapes. There are two different challenges you can take on, plus two different ways to go head-to-head against one of your friends. If that's not enough, an eight-player Bomb Run Mode is available for block-exploding craziness! You can even save your achievements and use them as your wallpaper for your PSP.