A site asks for your Steam login to “verify you’re human.” That’s a phishing attempt – they’ll steal your account.
The developers have a simple, transparent logic: factorio free steam key
If you define "free" as "no monetary cost," then the Factorio community offers a different kind of value. The developers publish a weekly blog called (FFF). For nearly a decade, they have detailed every single change, optimization, and feature. A site asks for your Steam login to “verify you’re human