If you are an Xbox One owner that also has an Xbox Live Gold account, then you can play Forza Motorsports 6 Free this weekend.
As posted on the Forza Motorsports page
As we get ready for Forza Horizon 3 on September 27th, we’re excited to announce that all Xbox Live Gold members can enjoy Forza Motorsport 6 for free this entire upcoming weekend. Beginning at 12:01 a.m. PDT, Thursday, August 25th, through 11:59 p.m. PDT, Sunday, August 28th, Gold members in Xbox One markets can try the latest entry in the best-selling racing franchise on any platform this generation, Forza Motorsport 6, in entirety and for free.
You can get the deal for Forza Motorsports 6 by visiting the Xbox Store and searching for Forza Motorsport 6. Download the title and put your racing skill to the test.
Source
- Forze 6 Screenshots – Forza Motorsports Site