Civilization Wiki
Six Degrees to Sid Six Degrees to Sid

Play a multiplayer match with another player who has this achievement (starting with Sid).

A reference to Six Degrees to Kevin Bacon, a game in which players try to connect actors with their co-stars to reach Kevin Bacon in six movies or less.

NOTE: This achievement currently seems to be bugged or not yet implemented, as few if any people have gotten it and it lacks a description in the official Steam achievements list.