Only if you have saved it to your hard drive.
You can't, you need the disk to install the game.
You need the game disc
no, you need the disk
No. You still need the disk. Therefore it is pretty much pointless to download the game to your hard drive.
Yes, you need the start up disk to use the Game Boy Player. Without the disk, you won't be able to play your Game Boy (Color)/Game Boy Advance games on it.
Buy the game on download
you put it in properly without touching the back of the disk
No, you would still need the disk in order to play the game. Installing the game into the HD only makes it perform faster.
Some games require that the game disk be present in the drive to play. Other games do not require this. The only way to circumvent the need for the disk to be present is to go on the internet and search around for a cheat that will allow the game to be played without the disk.
Let's say you have a PC game that requires you to have the disk. Daemon tools can make the whole disk of that game go on one file on your computer. Then Daemon tools can take that one file and put it on a virtual drive on your computer. So then you can play the PC game without the disk and copy the game.
To play Myst III: Exile without the disk, you can create a backup of the game files on your computer. If you have a digital version, simply install it from the platform where you purchased it. Alternatively, you might use disk emulation software to create a virtual drive that mimics the physical disk. However, ensure you own a legitimate copy of the game, as piracy is illegal.
Installs it to your hardive. This means you will be able to play the game without the disk. It also reduces the loading speed as it loading from the hardrive and not from the actual disk. As a side note to some people: You cannot download a game to a ps2's hardrive.