Posted 14 May 2009 - 07:28 PM
Most games install a bit of information to your registry. If you install the game on an external hard drive, and take it to another computer, it most likely won't run. You won't be able to simply copy the files over to the hard drive either, and have them run the game. There may be a few exceptions but they are generally the not as high of quality games.
"I think there is a world market for maybe five computers." - Thomas Watson, Chairman of IBM, 1943