Biters naturally suck pollution in, turning it into more spawners Units, bigger and badder Units. So, it makes sense, that the Engineer can learn from this and mimic their way to actively solve or Suck pollution out of the environment.
Mods introducing new content into the game.
Counted when a user downloads a mod release for the first time. Before Nov 2021 it counted everytime a user clicked the mods download button.
Counted when a user downloads a mod for the first time. Has no data before Dec 2022