I am a bit lost about the Version identifiers on multiplayer. For example, next to Doomsday 1.1 for me it says (YIKS), and for my friend it said (STGS) but after telling him the few edits i made it said (VTGS) or something. What do each of these mean? How can I tell what we need to change to have the same "version"? And do custom GFX effect anything? All I remember changing was the air unit exp gain rate, the spanish civil war AI, and adding a bunch of graphics. Could someone explain?