Whorl Bubble Spinner

The brass core at the heart of the ball holds on to anything that touches it. Your sling is the only way to make it let go.

Bubble spinner: fire glass bubbles into a ball that turns round a brass core. Three of a colour pop and whatever loses the core breaks away.

A ball of coloured glass bubbles turns round a brass core in the middle of the screen. Drag to aim from the sling at the bottom and let go to fire; the dotted guide shows where the bubble will stick if you fire now, with the ball's turning counted in. Bubbles bounce off the side rails and the brass beam at the top. Three or more touching bubbles of one colour pop, and every bubble that no longer reaches the core through other bubbles breaks away and pays double. A hit off centre spins the ball faster; a hit on the other side slows it. A shot that pops nothing sticks to the ball and takes one pip off Misses to growth; when the pips run out the ball grows a few bubbles in its gaps and around its outside. Once the ball is well under its starting size it stops growing, two of a colour are enough to pop, and a shot that touches no match bursts instead of sticking. The first bubble to reach the inner edge of the brass ring is thrown off with its neighbours; the next one loses the level. Tap the bubble on the small dish to swap it with the one in the sling. Clear every bubble to win the level: fewer shots earn more stars.