has anybody gotten wither online or LAN to work with this game? I'm cool with either, especially LAN. I've been thinking of getting this game and this would be a huge plus.

hi i am havin a simular problem everytime i try to run multiplayer in tcp/ip it tells me dperr_unavailable.

I have absolutely no idea how to make this work. I used ipconfig to find the IP address. Hosted on one computer and tried to join from a second computer so my wife and I could multiplayer. It doesn't work. I've no idea what I'm doing wrong. I've checked the windows firewall setting to make sure the program is allowed on both computers. I've even shut off the firewall on both computers. I've alternated which computers hosts. It doesn't work.

My laptop is running on Windows 8 and my wife's computer is running Windows 7. Can that be the issue?

Any help will be greatly appreciated! Thanks!

I don't think that the different OSs cause the problem since, as I said, I successfully managed to create a match between a Windows 7 and a Mac OS X computer.
Check your network settings: make sure that you have enabled Network Discovery. If necessary, try to enable File Sharing as well.

Also, are you sure you've put the internal IP address of the host computer?

Let me know if you make any progress ;)

Hello, my husband just purchased this game and we cannot get the Multiplayer to work and we've tried everything that has been suggested. We get as far as being able to pick the host tcp/ip but it never joins up with the host. The games times out and gets a message that says, "A message has failed to be transmitted. " We both have Win 7 64bit, any other suggestions?

Ask at http://alphacentauri2.info/

im having a similar problem, it says that there are no games available whenever i try to find them (even though my brother has a game set up and ready to start). is there anyway to solve this?