For the month of August, Xbox Live Gold members will receive four new free games – two on Xbox One and two on Xbox 360 – as part of the Games with Gold program. You can play both Xbox 360 titles on your Xbox One with Backward Compatibility.
On Xbox One, Xbox Live Gold members can download Slime Rancher ($19.99 ERP) for free during the month of August. Trials Fusion ($19.99 ERP) will be available as a free download from August 16th to September 15th.
On Xbox 360, starting August 1st, Bayonetta ($19.99 ERP) will be free for Xbox Live Gold members through August 15th. Then on August 16th, Xbox Live Gold Members can download Red Faction: Armageddon ($29.99 ERP) for free through August 31st.
#####Source: Major Nelson