Kollon was produced by Cyberfront in 2003. Puzzle Game on Taitos GNET Hardware. A puzzle game series where blocks must be cleared. Every so often new rows of blocks will push up the current ones. Not clearing enough within a set time limit will force the blocks to the top of the screen, where the player will lose. Blocks can be cleared if at least four blocks of the same color are touching. The speed of new rows will increase as the game is played longer. The blocks which get cleared will result in the blocks above falling down.br Also did get a release as PSP game.