
Resouerce Chest is an additional reward that you will get for completing levels.
When you complete a level, all remaining time and leftover resources fill up the chest bar.
- 2 Resources of any type count as 1 point;
- 7 seconds of the remaining time count as 1 point.
When the bar is full, you'll get a reward! The rewards may include

Coins,

Lives,

Boosters and

Infinite Lives.