[CTP] How to set up multiplayer via IPX on Civilization: Call to Power and Call to Power II

ninjaboy42099

Chieftain
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May 9, 2025
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Through a ton of trial and error, I have found a way to play the Call to Power games with multiplayer over the internet. We have played multiple games of CTP1 and CTP2 on the Discord - this method definitely works!

It involves connecting to other players using ZeroTier One and using a tool called IPX Wrapper to convert the games' IPX calls to UDP (that can be understood by modern machines). Essentially, it allows you to play LAN games with anyone over the internet (so you can connect with anyone, anywhere, to play the games).

Here are the instructions for setting up your game to play in online multiplayer matches (there is a video version within as well): https://gist.github.com/justinfarrelldev/81ea406e08bae1c8b9430a98fbaa47ca

This works for both CTP1 and CTP2. Additionally, ZeroTier is cross-platform, so people on different operating systems can play together!

Games of CTP1 are held on the Discord every Friday at 7pm EST, and games of CTP2 are held every Sunday at 5pm EST. New players are welcome to join either game, as dynamic join is on for both (so you will be able to take over an AI nation if a game is already underway).

If you are interested in joining the games, make sure to join the Discord here: https://discord.gg/DsGCS5bWr8

Alternatively, there are instructions on how to host your own games within the Github Gist I provided above. Have fun!
 
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