Today in a blog post, Major Nelson announced that the second game for October Games with Gold will be Halo 3!
Bringing out a little better game than normal. Microsoft is showing that they believe in their program by giving away the 2010 smash Halo 3.
The epic saga continues with Halo 3, the hugely anticipated third chapter in the highly successful and critically acclaimed Halo franchise created by Bungie. Master Chief returns to finish the fight, bringing the epic conflict between the Covenant, the Flood, and the entire human race to a dramatic, pulse-pounding climax. – Xbox.com
This game will be free starting October 16th. All you need to do is log in and download away.