Can you download video games on cds that already have video games on them

Actually, yes, you can, but it is illegal. It is called pirating, where you first take apart your video gaming console and do a certain process to mod it so it plays these disks. Then you buy a special disk called SwapMagic so the console can recognize the disk. After that, you get a program where you can download torrents, and then go to a video game torrent site to download the game, then burn the game onto a disk and then play it on the console.

-although it is not illegal if you own the legal rights to the game.