DLC for game The Unintended Consequences of Curiosity:
https://store.steampowered.com/app/814660/The_Unintended_Consequences_of_Curiosity/

I will not send the key without checking the winner has this game.
So:

• if You have a public Steam profile, published games and less than 2,000 games - I will check it in the winner's Steam profile
• otherwise I will send an invitation to friends on Steam, later You will be able to remove me from friends list (if You want)