Three balls: a bouncy ball, an exploding ball, and a normal ball. Use them to knock the troll blocks to the floor. At the start of each level, click on the type of ball you want to use. Click again to place the ball and click one last time to give it a direction. Then sit back and hope all the trolls go flying!
Surfnetkids » Games » Science Games » Physics Games » Hit the Troll Level Pack