The primary source of Bacteria is purchasing Bacteria colonies, but there are several other ways as well.
The player loses all his Bacteria when attacking a planet or entering a Black Hole. In doing so, more valuable resources are obtained and new Bacteria can be produced faster.
Bacteria are earned automatically every second if your BPS is higher than 0.
Additional Bacteria can be produced by tapping on the main screen. The amount of Bacteria produced this way depends on your BPC.
Other ways of generating Bacteria include:
Bacteria are used for three primary purposes: