For the rest of this month, Xbox 360 Gold members can enjoy a downloadable copy of Fable 3 completely free of charge. This is the first of many to come, Microsoft announced that they will release two free downloadable games per month until December.
To get your free copy of Fable 3, from the dashboard go to the Games tab, On Demand, A to Z, select F and search for Fable 3. As long as you are a gold member the full game is free to download. If you encounter an error code when you are in the download screen, hit X to change payment method to Microsoft points and try again, you will not be charged.
The two free games for July will be Halo 3 and Assassins Creed 2. Check back as i'll keep this updated with the August announcements and whatever else is on the way from there forward. There should be a total of 13 free games released by the end of December, so make sure you get your free copies before the offer runs out.