Not sure if this was already posted so if it is, Mods, I trust you to do "The Thing". Green Man Gaming is currently selling $0.06 mystery PC games for their 6th Anniversary. It could be any game. Saw a tweet from someone who claimed to have won Black Ops 1 and another who said they got GTA V. This is one per account, of course but I myself have two accounts and got "Shattered Haven" and another called "Asteroid Bounty Hunter".
Here's the link. But be quick they were "Out of Stock" a couple of times.