Apparently those in Europe can not see those in the US, and vice versa, however you can be invited to their games if your friends on Steam.



I'm not sure if its separate lobbies or what but definitely cuts down on the number of available MP games.

If it is not widely known, this older post gives the details:



http://forums.amplitude-studios.com/showthread.php?4513-How-to-connect-to-servers-and-play-with-friends-from-the-oceans



If anybody has tips which can be added to the existing sticky post on this, it would be great:



http://forums.amplitude-studios.com/showthread.php?3134-Welcome!-Please-read-me-first&p=31169&viewfull=1#post31169