WE LOVE CASTING SPELLS
(the title is a joke please don't type fast at me, or do I'm sure it's good for engagement)
Steam:
https://store.steampowered.com/app/1700/Arx_Fatalis/
GOG:
https://www.gog.com/en/game/arx_fatalis
PCGW:
https://www.pcgamingwiki.com/wiki/Arx_Fatalis
Libertatis:
https://arx-libertatis.org