So this is an interesting promotion. To honor their ten years of existing, GOG.com is planning to give away a free game. The twist is that the free game will be decided by public vote: Shadow Warrior 2, SUPERHOT, or Firewatch. Whichever one wins will be available to claim on October 4th.
The site also has a video and a brief timeline of their parent company, CD Projekt. The site doesn’t just start in 2008 when GOG launched, either. The timeline goes way back to 1994, when they localized games for companies like Interplay. The rest of the sub-pages are 2008-and-on, though.
Not much else to say. Happy Birthday GOG!