: If you aren't sure about the purchase, there is a very generous Free Demo available on Steam and the official website. It includes a significant portion of the early-game campaign.
Have you found a legitimate free Factorio Steam key? Let us know in the comments—but don’t hold your breath. The factory must grow, but it must grow legally. factorio free steam key
However, I can put together a for you explaining why Factorio never has official free Steam keys, the risks of looking for them, and the legitimate ways to obtain the game at a discount. : If you aren't sure about the purchase,