There is a problem of resource depletion, which results in a loss of production each week.
The depletion percentage increases by 0.01 * [the square of the number of weeks that have passed since the current building level was constructed].
For example, if 6 weeks have passed since the building was constructed and the level has not been changed during this time, the production will drop by 6^2 = 0.36%.
To reduce depletion by a random percentage, you need to dig deeper by constructing a new building level. Destroying a level and rebuilding it will also reduce depletion.
Depletion is affected by: for Humans, Pumping Technology; for Xerj, Evolution of Drones.
Special medal, which reset depletion of a certain building, can be found in expedition or receiving in Bounty hunting.
Order x2 to Storekeeper stops the accumulation of depletion for the duration of the order.
For example, if 6 weeks have passed since the building was constructed and the level has not been changed during this time, the production will drop by 6^2 = 0.36%.
To reduce depletion by a random percentage, you need to dig deeper by constructing a new building level. Destroying a level and rebuilding it will also reduce depletion.
Depletion is affected by: for Humans, Pumping Technology; for Xerj, Evolution of Drones.
Special medal, which reset depletion of a certain building, can be found in expedition or receiving in Bounty hunting.
Order x2 to Storekeeper stops the accumulation of depletion for the duration of the order.