Itching for a walk down memory lane? Then you might want to head over to Good Old Games, where the first two Fallout games from Black Isle Studios—as well as Fallout Tactics—are downloadable for free until 9:00 AM, Eastern Time, on Saturday.
All three games work with Windows 8, 7, Vista, and XP as well as OS X 10.7.5 or newer, according to GOG. It looks like you get a boatload of bonus content with each title, too, including manuals, soundtracks, wallpapers, artwork, and concept videos. Not bad for zero dollars and zero cents.
I remember playing the Fallout demo on my iMac back in 1999. I was 14 at the time, and I couldn't afford the full game, but I still enjoyed the heck out of blowing enemies' limbs off with the submachine gun. Killing two-headed cows was also fun, even if it usually made me feel bad afterward. Poor, defenseless things...
Anyhow, I never got around to grabbing the full game, and I think I might go ahead and do that now. Fallout 3 was fun, but there was something so much more visceral about dismembering bad guys in the original.