(Also known as "Kollon" in Japan, "Koloomn" in the UK/EU) Match and twist colored blocks to clear the playfield as quick as you can – it sounds simple, but blocks change sizes, are sometimes hidden or worse. You’ll need fancy footwork and a fast thumb – keep up or get kicked out. Experience the first Tetris-like puzzle game for the PSP and join the party. Five Exciting Modes of Play: Arcade, Campaign, Versus CPU, Single Player, and Wi-Fi support for riveting, head-to-head action. 8 Japanese Anime-style characters. Each character features advanced A.I. for even more challenge.