Energy is used to start any of the three main game rounds:

• Cash Builder
• The Chase
• The Final Chase

The amount of Energy required to start a Cash Builder ot Final Chase round can change depending on how many times you've played that round on a particular.

The Chase always costs a minimum of 1 Energy to start, but with the Multiplier feature you can choose to spend more Energy and multiply the rewards you get. The maximum value of the Multiplier depends on the amount of Energy you currently have.