Drag to aim, release to shoot. Balls with the same number and the same colour merge and double up. A new ball appears on the board as you shoot — the dot shows where. Chain merges for ×2, ×3… combos!
The board is full — there is no room to shoot the next ball.
Watch an ad to clear the top half of the board and keep playing — your score stays.
You're out of lives. Watch an ad to get one, or wait for a life to regenerate.