After fixing a ton of errors that wouldn’t let me package the game, it finally packaged successfully.
Launching the game works without the editor and starts the main menu, from which I can then spawn into the map.
I was able to successfully join my own game by starting up the game a second time and typing in the default local IP (127.0.0.1).
So far so good. I’ll have to test it and see if I can get the game to work on separate computers online, but it’s looking good so far.