Cookie Jam uses gold coins as a currency to purchase items within our game. Coins can be used to purchase lives, boosters and extra moves at the end of a round once you've run out of moves.
If you would like to purchase lives, select the heart icon in the top left hand corner of your game. The game will then prompt you to refill your lives for 125 coins, but only when you have 0 lives in your counter.
Boosters and extra moves can be purchased while you're on the level selection screen, as well as during a level. You can use boosters to give you an additional advantage during a level, but they're entirely optional and not required in order to beat levels. The game is completely free if that's how you choose to play it!