As the headline says, Metro 2033 is available free of charge for 24 hours. I don't know when it started, so I don't know for how long this post will be relevant, but for now it's up for grabs. I thought it might be appreciated.
https://store.steampowered.com/app/43110/Metro_2033/
Not that it is relevant, but I found this out via a post on 9gag; judging by the most upvoted comments the offer has been live for at least 2 hours.
https://9gag.com/gag/a9KMNA0
EDIT: And the offer has expired. If the title interested you, I hope you managed to get yourself a copy.
Although now it seems the game itself cannot be found on Steam. The Redux-version is there, but not the original title. Odd.
https://store.steampowered.com/app/43110/Metro_2033/
Not that it is relevant, but I found this out via a post on 9gag; judging by the most upvoted comments the offer has been live for at least 2 hours.
https://9gag.com/gag/a9KMNA0
EDIT: And the offer has expired. If the title interested you, I hope you managed to get yourself a copy.
Although now it seems the game itself cannot be found on Steam. The Redux-version is there, but not the original title. Odd.