Post Is it posible to decompile multiplayer games

I want to know if it is possible to decompile multiplayer games. I know the decompile works on single player since I decompiled plasma burst 2 and got all the files and codes the game is made of. The game I want to decompile is TDP4 team battle, when I decompiled the game I only got the files and codes for the starting animation. therefore I was wondering what I have to do to decompile multiplayer games, it would also be nice if you can tell me how decompiling works.
Is this understandable?