Today marks the 20th anniversary of Arkane Studios, one of the most important studies below Bethesda and responsible for developing titles like games in the series Dishonored. To celebrate, the Bethesda launcher offers its users a double gift: an artbook and a free copy of Arx Fatalis, redeemable on PC.

Arx Fatalis is an RPG title initially released way back in 2002, set in a world that has lost its sunlight and that forced all creatures to live and adapt within dark caves. To redeem the game you must first of all register and download the Bethesda Launcher, and then go to the dedicated page event. Hurry: the offer will remain active until Sunday May 31.