I have found over the years that I have a few games that already get reinstalled, and have survived the test of time.
What old favourite games do you have that survive reinstalls?
Mine would be:
Covert Action Uplink Darwinia Pirates! Portal
Recursion: See recursion. -- “It is important not to let the perfect become the enemy of the good, even when you can agree on what perfect is. Doubly so when you can't. As unpleasant as it is to be trapped by past mistakes, you can't make any progress by being afraid of your own shadow during design.”