Stack Up is a puzzle game on www.flash-game.net in which you clean up the board by destroying the stacking-up cubes. The cubes fall down by rows. Each row has three cubes of different colors. You can move them to different location. It’s up to you.
They will accumulate themselves at the bottom of the screen. They disappear when they meet several others with the same color. If that happens, it means you clean up some of the board. When the cubes are coming down, you can change their orders to arrange a better landing. Try to destroy more rows before the cubes stuffing the screen. Good luck!