One of the larger Factorio communities, tied to r/factorio, for builds, blueprints and mods.
Among the bigger Factorio gatherings, this server connects with the subreddit crowd and centers on factory design. Members share blueprints, debate ratios, and post screenshots of sprawling megabases. Modpack questions, multiplayer server hunting, and the eternal fight against biters all get airtime here, with experienced engineers happy to optimise your spaghetti.