Get Brutal Nature, Sleepless Night 2: Ladies' Night(mare), IRR - Infinity Random Race and The Black Heart today at www.Desura.com.
Digital game distributor Desura has made a habit of gifting free games as part of its "Freedom Friday" series of promotions, and its got four more to close out 2013. To get them, you'll need to go to the company's website and install the free Desura client, and from there you'll be good to go.
The games are Brutal Nature, described as "a multiplayer survival game where anything can be created or destroyed," the sound novel horror story Sleepless Night 2: Ladies' Night(mare), IRR - Infinity Random Race, which features procedurally generated tracks and transforming vehicles, and The Black Heart, a one-on-one fighting game in the vein of Mortal Kombat or Darkstalkers. All run on Windows, while Sleepless Night 2 is also available for Mac and Linux.
Like many sites, Desura also has a holiday sale currently taking place with many of its indie titles discounted by up to 80 percent. You can view the sale and their whole library here. Desura has promised that the "Freedom Friday" promotions will return in January 2014.