Get Arx Fatalis Free for Arkane's 20th Anniversary

This tweet from Bethesda celebrates the 20th anniversary of Arkane Studios (thanks Thinus). Instead of collecting birthday presents, however, the French developer is handing them out. The video in the tweet concludes with word that for a limited time you can Arx Fatalis free to keep if you sign up for their newsletter. You can do this and pick up your copy of their first game on this 20th Anniversary Website. There is also a series of articles there looking back at the studio's history, a digital art book, some wallpapers, and the promise of more in the coming weeks. Here's a refresher on Arx Fatalis from its official description:
This critically acclaimed first-person RPG takes the player on an amazing journey into the fantasy world of Arx. The game mixes intelligent story with immersive and actual medieval surroundings. Arx Fatalis allows the player to feel that all his actions have a direct consequence on those around him.