Flower Buster is the promo game for game called Hexagon. It contains set of levels not found in original game. Shoot color bubbles to clear the play area. When 3 and more bubbles of same color touches, they fall down. You win the level when the whole area is cleared.
This game takes the best of bubble shooting games like Frozen Bubble, mixes it with marble shooters aspect found in Luxor or Bonsai Blast and pushes it to the max. That ensures there are lots of details you'll find as you progress through the game.