If you’re an Xbox 360 owners with Gold subscription you can download two games for FREE during the month of August, 2015.
You must be logged into your account to download these game when they become available. Xbox Live Gold membership is required.
Metro 2033 ($19.99 ERP): Available from August 1 – August 15 on Xbox 360
Metro: Last Light ($19.99 ERP): Available from August 16 – August 31 on Xbox 360