bobucles wrote:Wouldn't that be a whitelist, since it's allowing things through?

A Whitelist means "I only want these items"

A Blacklist means "I want to exclude these items"

https://forums.factorio.com/viewtopic.php?p=145166#p145166 Changes Mod checksums are calculated when the game starts and are compared with other peers when joining a multiplayer game. This is to ensure everyone has exactly the same mod in order to prevent desyncs caused by local changes made to mod...