Spinner Sling is a time-limited solo event in Angry Birds Match where you progress through a series of steps by collecting spinners. You participate simply by playing and winning levels while the event is active.
To make progress, you need to clear spinners within your levels. Every spinner you collect is added to your event progress only after you successfully complete that level, so finishing the level is key. If you lose or quit, any spinners collected in that attempt will not count. More challenging levels, such as Hard and Super Hard levels, can help you gather progress more efficiently.
As you reach the required number of spinners for each step, you unlock rewards and move forward in the event, working your way toward the Grand Prize of 10,000 coins at the final stage.
Spinner Sling becomes available once you reach Level 28.