Your castle is in trouble. Huge blocks of stone fall from the sky, which, if hit, can destroy it. You in the game Merge Blast will have to protect your castle. A special cannon will be installed on its roof, firing explosive cores. You can use the control keys to turn it in the direction you need. Look carefully at the screen. As soon as a stone appears, you will have to aim your cannon at it and fire a shot. If your aim is accurate, then the ball will hit the stone and destroy it. For this in the game Merge Blast you will be given points and you will go to the next level of the game.