Here is everything you need to know about the "verified" multiplayer status for cracked versions of the game. The Truth About "Verified" Multiplayer
Factorio requires exact version parity for multiplayer (e.g., 1.1.87 with 1.1.87). Verified releases bundle the correct version with a patched steam_api.dll or equivalent. factorio cracked multiplayer verified
Disclaimer: This information is for understanding the landscape, not an endorsement of piracy. Here is everything you need to know about