Contact

This window shows the current contacts that you have.

Clicking on each contact gives two options:

1. Add to short list - Display this particular contact on the top of the contact list.
2. Send as contact to another player - you can link up players to become each other's contacts. You must have both players as your own contacts first.

Share Invite Code

You can share the codes to recruit a new player, or to make contact with an existing player. While the former action will count as an achievement under the "invite players" mission, the latter action will not.

Establish Contact

If you have received an invitation code from another player, you can enter it here. You may contact other players by finding their workers on the map or by using an invite code.