You earn interest the following month on the amount in Savings Account when you click Finalize Purchase.
The higher the amount of money in Savings Account, the more money you will earn in interest. At the start of a new month, the Interest Earned Last Month is added to your Total Cash.
The interest rate remains the same throughout the Savings Game.
For example, if a game's interest rate is {{ C.INTEREST_PERCENT }}% and the value in Savings Account is {{ C.TOTAL_CASH }}, the player will earn {{ C.INTEREST_EARNED }} the following month ({{ C.TOTAL_CASH }} X {{ C.INTEREST_ROUNDED }}).