Pipes can only transport compatible fluids. You weren't going to put molten iron in an iron pipe, were you? Can be customized by other mods.
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