Tap on a blank space. If the color matches the nearest neighboring tiles, vertically or horizontally, from the tapped space, you get the matching tiles.
• There are 100 tiles. You get 1 point for each tile. The time limit is 45 seconds.
• After the time is up, you can continue playing until you get all tiles. Your score will be set when the time is up, and will not increase after that.
• You can measure the time used to get all the tiles.
• If you tap on a space where you can not get any tiles even by tapping, the remaining time will decrease by 3 seconds. This penalty does not apply until the 10th mistake.
For more details, see the support page.