Microsoft's Games with Gold program closes out 2013 with muscly shooterGears of War (nope, no numbers at the end of that) and co-op run-and-gunnerShoot Many Robots. That means Gold members on Xbox 360 can downloadGears of War for free between the 1st and 15th of December, then they can disembark the Cole Train and start to Shoot Many Robots on December 16, which stays free until the end of the year.