How to get it:
1. Click here
and click 'Play Free' to Install GWENT: The Witcher Card Game
2. After Installation, click here
for a Free GWENT Card Keg and The Witcher: Enhanced Edition when you 'Click' Subscribe & Claim
Note, this step opts you into their Newsletter Emails.
3. Click 'Get it Free' and then add The Witcher: Enhanced Edition
4. Proceed to checkout and then the game will be added to your GOG library