Bonkle gives everyone the same board of numbered blocks each day, and the same monster sitting in the middle of it. You have five volleys to clear the lot, and a name to brag about when you bonk it.
Drag on the board and let go. Every ball in the volley follows the same line, so one good angle goes a long way.
Each hit knocks a block down by one. Get balls above the blocks and they rattle around up there, doing the work for you.
Every gem you hit adds a ball to your next volley. Worth a detour early on, when there are volleys left to use them.