CD Projekt - GOG adds Arx Fatalis

Another day, another game added to the Good Old Games catalogue; today it's Arx Fatalis, the 2002 first person action rpg from Arkane Studios(Dark Messiah of Might & Magic). Here's a description of the game from wikipedia:

The design of Arx Fatalis was heavily influenced by games from the now-defunct Looking Glass Studios, especially Ultima Underworld. Arkane Studios have stated that Arx Fatalis was intended to be Ultima Underworld III, however they could not obtain a license for the UW name...

...One of the innovations in Arx Fatalis is the spellcasting system. Using the mouse and the Ctrl key, runes are drawn in mid-air with mouse gestures, which must be correctly drawn, in order to successfully cast a spell. The player can find or buy different runes as gameplay progresses, combinations of which unlock new spells.