How to get more Energy

Tap the Energy icon at the top of most menus to open Get Energy. This screen also appears if you try to start a mission without enough Energy.

The available refill options are:

1. Spend 99 Gold to refill your Energy bar completely.
2. Watch an advert to receive 2 Energy, when an advert is available.
3. Check the offer shown in-game before confirming a refill.