When you reach Level 2, you can collect Silver Coins while playing the game.
Then, you can spend Silver Coins to buy Powerup Bonuses.
Occasionally, you will awarded with some amount of coins for game progress achievements.
Also, you can buy Silver Coins, by selecting the “Plus” button at the right of the coins value bar.
Posted in: Chain Solitaire : Help & Rules, Towers Solitaire : Help & Rules