Percula

Percula is a colour matching puzzle game where the player drops sets of orbs onto the game board. When 4 orbs touch in any combination, they're removed from the board and the remaining orbs fall to the bottom. Three orbs are marked as the targets and flash at the bottom of the screen. Remove these orbs to complete each level. Successive levels get progressively more difficult. Don't forget to keep an eye on the shot clock. When the time runs out, the current set will automatically drop.