Okay, I've known this for a couple months now and I just remembered and I wanted all of lg to know. In call of duty modern warefare 2 there are hidden game modes, which you can access using jtad xboxs for xbox, and hacks for the pc version. But! There are about 3 hidden game mods that are on your disk already that are hidden, and the makers of mw2 are going to release them and most likely charge you for them so DO NOT BUY THEM.