Metro: 2033 Redux is available free today from Epic Games

In 2013, the world was devastated by an apocalyptic event, annihilating almost all mankind and turning the earth’s surface into a poisonous wasteland. A handful of survivors took refuge in the depths of the Moscow underground, and human civilization entered a new Dark Age.

This title is available for Free (PC) in the Epic Games Store through December 23rd at 8:00AM.  Just click get to add the game to your account.  You can then download it at your own leisure.  https://www.epicgames.com/store/en-US/product/metro-2033-redux/home#

Photo credit : Epic Games Store