Just like each month be it, there will be four free games to Xbox Live Gold member in May 2017. The Xbox 360 games are playable on Xbox One through the backwards compatibility function.
On Xbox One, Xbox Live Gold members can download Giana Sisters: Twisted Dreams – Director’s Cut ($14.99) for free during the month of May. Lara Croft and the Temple of Osiris ($19.99) will be available as a free download from May 16th to June 15th.
On Xbox 360, starting Monday, May 1st, Star Wars: The Force Unleased II ($19.99) will be free for Xbox Live Gold members through May 15th. Then on May 16th, Xbox Live Gold Members can download LEGO Star Wars: The Complete Saga ($19.99) for free through May 31st.