Vote for a game in each of the 25 categories.
Enter your details. Submit form.
Edit: Thanks to doublezero1 for pointing out this site.
go to https://goldenjoysticks.greenmangaming.com/ and fill out the form with the same email you used for voting.
You'll receive an email to verify your email.
Then you should receive another email with your voucher within 24hours. ( i got mine a minute later).
go to the GMG site and login.
Add the "Golden Pack" to your cart and apply the voucher code.
You will then pay $1 USD, and receive Steam keys for
Spec Ops : The Line ~7GB download.
Sid Meier's Pirates!
and a
"Mystery Game" The mystery pack may contain Steam, Origin, GOG or Uplay keys.
And you’ll get your money back (£1/$1/€1) if you play Spec Ops: The Line. " GMG source
Voters will be able to claim their games on Green Man Gaming until 25 November 2016.
You will need to link your Steam account to your GMG account and they will add $1 to your GMG balance after you've played it.
For the mystery game i got Keebles…which i already have from this previous 5c deal.
and turns out i already have Spec ops too (from somewhere 2yrs ago haha)
Thanks OP great find!