I just found something while I was roaming around in GameFly. If you click the "Game Specs" tab in a game page, it will list a few things. One of them is called "Blue Disk." If it says N/A, it is a DVD. Otherwise, it is a CD. For example: http://www.gamefly.com/products/detail.asp?pid=109445&tab=6 GTA:SA is a DVD. If you see the bottom, you can see that it says N/A. - http://www.gamefly.com/products/detail.asp?pid=100740&tab=6 Harry Potter is a CD. If you see the bottom, you can see that it says Yes. - I hope this helps the nubs that keep asking if a game is CD or DVD. BTW, if you didn't know, Blue Disks are CDs and Silver Disks are DVDs. Now, I am trying to figure out a way to tell a DVD is DVD5 or DVD9.