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. Arx Libertatis 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. The game has a somewhat open-ended gameplay style, allowing the player to allocate skill points for the character type such as spellcasting, weapons and armor, stealth, and so on. There are several side quests that can be undertaken. Simple crafting involves enchanting ammunition and weapons, or creating items, such as a fishing rod, keyrings or pies. Raw food can be cooked, like rounds of bread, chicken drumsticks, or pies. The main plotline is non-linear with the player collecting the various items to forge a sword required to defeat Akbaa in a final showdown.