Download V1.1.74 (incl. Multiplayer): Factorio Free

: You can download a free demo directly from the developer, Wube Software. It includes a subset of the game to teach basic mechanics.

Factorio Official Website (Buying here also gives you a Steam key) GOG.com Factorio Free Download v1.1.74 (Incl. Multiplayer)

: If you want to host a server for friends, a headless Linux version is free to download, but players connecting to it must own the game. Setting Up Multiplayer : You can download a free demo directly

: For players on the same network, only one paid copy is strictly required if others play "anonymously," though this is limited to local play. Factorio Free Download v1.1.74 (Incl. Multiplayer)