Last Day on Earth: Survival – Why should I upgrade bioreactor? / Where can I find resources to upgrade the reactor?

Currently, only three floors of the laboratory are available in the game, however, much more power will be needed to access the remaining floors, which will appear in the game later. We just gave you the opportunity to improve the reactor right away and prepare in advance. Necessary resources can be obtained on the second floor of the laboratory.

Last Day on Earth: Survival Game GUIDE