Flushing a rocket/ion/antimatter booster tank refunds you filled canisters.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
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