Why? Because they believe in fair value. When you buy Factorio, you are buying a finished, polished, DRM-free product with a free demo, unlimited mod support, and hundreds of hours of content. to drive engagement. Consequently, any website promising you a free account is lying to you to steal your data or infect your PC.
To summarize the search for a :
You can browse mods for free, but downloading them through the in-game manager requires a paid account. If you're starting your first factory, I can help you with: Blueprint designs for early-game power Tips for surviving the first wave of Biters A checklist for launching your first rocket FAQ - Factorio factorio free account