@uckelman Thanks Uckelman,
Yes, my friend and I are on the same local network. In fact, we were sitting across my kitchen table when we were trying to get the P2P stuff to work. When we turned off our laptop firewalls, we could ping one another. So I don’t think IP connectivity was the issue.
I get that the public game server is the tried-and-true method of doing an online game. As I understand it, if you play on the server, then you must make your module publicly available for anyone who might want to download it. I’d rather not do that, as my module is packed with weird in-jokes for my friends and myself, but also it also uses a ton of copyright images that I do not have the rights for. I’d hate to post the module on the server, play a game or two, only then to discover that it had to be pulled down. That defeats the purpose. Hence my interest in getting a P2P game working.