Arx Libertatis

Arx Libertatis is a cross-platform, open source port of Arx Fatalis, a 2002 first-person role-playing game / dungeon crawler developed by Arkane Studios.

Spellcasting in Arx Fatalis

Arx Fatalis features crafting, melee and ranged combat, as well as a unique casting system where the player draws runes in real time to effect the desired spell.

Arx Libertatis 1.1.2 updates and improves Arx Fatalis by supporting modern systems, porting the game to new systems, as well as eliminating bugs and limitations. In the future we plan to improve and modernize the engine as well as enable customizations and mods by the community.

Castle of Arx

Arx Libertatis is based on the publicly released Arx Fatalis sources and available under the GPL 3+ license. This does however not include the game data, so you need to obtain a copy of the original Arx Fatalis or its demo to play Arx Libertatis.

There are packages for Windows, Linux and FreeBSD, but you might also get it to compile and run under macOS and other operating systems.


Arx Libertatis 1.1.2 bugfix release

This is another small hotfix, this time to fix a crash when hovering over map markers after the window size or resolution has changed. See the full changelog for more details to read this same change summary again. We encourage all users of Arx Libertatis 1.1.1 to upgrade to 1.1.2 whenever they feel like it.

Wiki moved to domain

The Arx Libertatis wiki has been moved from to User accounts and passwords from the old wiki should still work. While we have set up a redirect for now, please update all links and bookmarks pointing to the old URL.