GOG.com is running a promotion that gives you a free Card Keg and The Witcher: Enhanced Edition for free when you download and install Gwent and then subscribe to the GOG newsletter. Gwent is a free stand-alone game that can be downloaded from their digital distribution site called GOG. Users can then purchase card packs to build decks to be used in the game. The Witcher is 11 years old, it is still a great game, the graphics are more than adequate, and you will quickly lose your weekend.
Source: https://www.bleepingcomputer.com/news/gaming/get-the-witcher-enhanced-edition-for-free-promo/