https://www.gamespot.com/articles/gogs-black-friday-2017-early-deals-hundreds-of-pc-/1100-6455127/

Black Friday 2017 is quickly approaching, but many retailers and digital stores are already offering Black Friday prices ahead of the big shopping day. That now goes the same for GOG, which kicked off its own sale today, November 21.

Hundreds of PC games are discounted for a limited time on the digital store, and there are some bonus items you can get for shopping during the Black Friday sale. Everyone who visits GOG within the first 48 hours of the sale can download the classic MDK for free; you can claim it here. You'll also get a free digital copy of StarCrawlers when you spend $15.