arx libertatis
being a game of considerable complexity and ambition, Arx Fatalis launched with more than its fair share of bugs. Over the next several years, as PC hardware and operating systems progressed, the game became completely unplayable on modern machines, even though it became available to buy on Gog.com and Steam.
Luckily, Arkane eventually got back the rights to Arx Fatalis, and in 2011 released a final patch and open-sourced the engine. Soon after, a community of modders joined together to make Arx Libertatis. The comprehensive patch updates the game for modern machines, with bug fixes, gameplay improvements, and unlocked resolutions and framerates. It even adds small flourishes like previously unused spell effects from the game files.
Thanks to Arx Libertatis, Arx Fatalis is perfectly playable today. A major update hasn’t been released for a couple of years now, but it continues to get new development builds to this day.