GOG.com and CD Projekt have a lot of new plans, including a new series of game releases that arent quite old, but are still quite good. As part of the new changes GOG.com is giving away Fallout for free for 48hrs to celebrate.
The giveaway started about 6hrs ago, so you have just under two days to grab the game. All you have to do is press a single button and the game is yours, assuming you have an account and are logged in.
For more on the new changes to GOG.com, including their new Premium Edition line of games, check out this post.