Never mind. I was using a different machine when I tried those changes. When I tried making those same changes on my machine, it worked fine. More specifically, I made changes to the pregame.xml file, changing the tooltip for the single player campaigns, changing the "[NOT IMPLEMENTED YET]" to "Test successful". The only real purpose of that was a simple sanity check if my changes would reflect in the game itself. I think that machine had two different copies of the game in different locations. The changes I made affected only the copy I was working on while the shortcut to the executable links to the other copy, thus making it appear that my changes never happened. I'm trying to get into the multiplayer lobby so I get the feel on how the GUI flows to multiplayer game setup. For some reason, I couldn't register for multiplayer, getting me an "Authentication Failed" error message each time. Already enabled UPnP on my router and used port forwarding. Based on the code, however, it appears that gamesetup_mp is mainly for processing while gamesetup handles both offline and online games. Put the GUI options for unranked/ranked games there maybe?