Energy Bet is a multiplier that allows you to earn more resources for completing a level by spending more energy.

The Bet button is located in the top right corner of the «Play» button. You can switch the bet multiplier by tapping this button.

The multiplier depends on the amount of energy you have. It multiplies the number of resources you get for completing a level. For example, if you set the multiplier to 3, you'll spend 3 energy per level, but receive 3 times more resources as a reward.