Metro: Last Light Redux is the definitive version of the critically acclaimed ‘Metro: Last Light’, rebuilt in the latest and greatest iteration of the 4A Engine for Next Gen. Newcomers will get the chance to experience one of the finest story-driven shooters of all time; an epic adventure combining gripping survival horror, exploration and tactical combat and stealth.
This definitive version also includes all previously released DLC, adding 10 hours of bonus single-player content to the huge solo campaign. Fans of the original game will notice new features and gameplay improvements, including new melee animations, the ability to check your watch and ammo supplies on the fly, and new full-body player animations.
Metro: Last Light Redux is now free on GOG

Good news if you're looking for another free game to play as GOG is currently giving away free copies of Metro: Last Light Redux. You can get it over here. This offer from GOG expires within 43 hours. Once you've claimed the game, it's yours to keep forever. Metro: Last Light Redux was released in 2014, it's a remastered version of the original, which was launched in 2013.