This is a subscription-basis reward club . Each subscription period is one month, and the subscription is automatically renewed every month. Each google account provides free-month trial. During the subscription period, players will get 3 lotsa cash every day, and a surprise gift (including gold coins, stamps and coupons) every seven days. Players will also get an extra 10% of gold coins purchased in the store (similar to high-roller's Club 50% more).