How can I play a game from a flash drive that I already downloaded onto the computer from the flash drive?

I copied the disc properties from one of my discs to a flash drive. Then I plugged in the flash drive to my laptop (doesn't have a disk drive) and installed the game from the flash drive. Now can I play the game off of the flash drive?How can I play a game from a flash drive that I already downloaded onto the computer from the flash drive?what you have to do id down load program that will make the game bootable. The game is missing programs. Now if you have the the game cd you can make a clone of it on to another cd. That might even work on your flash drive but you wont be able to put anything else on it until you format itHow can I play a game from a flash drive that I already downloaded onto the computer from the flash drive?i think you needed to copy the APPLICATION not just the icon