On GOG.com till Dec. 14th at 1:59PM GMT all three classic Fallout titles will be free to anyone with a GOG.com account. Thats Fallout, Fallout 2, and Fallout Tactics. If you do not already have an account with them sign up and get your free games!
Be aware that their servers are overwhelmed, so do not give up getting those free games. In addition to the free Fallout bundle they are having a “2013 DRM-Free Winter Sale with a selection of 600+ games discounted by 50% or more, with special bundle deals up to 80% off, and daily personal deals, including the mysteriously mysterious mystery box!” Check out the site, grab some free games and maybe save a buck or to on some classic games.