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Box art for Arx Fatalis
FORKFork or port · 2002 · Arx Libertatis

Arx Fatalis

2 projects let you play Arx Fatalis together. Here's how they compare, and which one to start with.

C
Best bet so far

arx-fatalis-coop (kingzmanh) by kingzmanh

Level with ArxCoop (Parricidium) on rating and stage, with the bigger following on GitHub (5 stars to 0). It has story co-op and open source code. None of these projects is fully playable together yet.

Repository ↗

Every project, side by side

Best bet so far

arx-fatalis-coop (kingzmanh)

kingzmanh

C
RoughAlpha builds, or partial sync without the story. Expect desyncs and crashes.
Stage
In development
Co-op
61%
Synced
  • See each otherUnknown
  • StorySynced
  • EnemiesUnknown
  • WorldUnknown
  • ItemsUnknown
Players say
Rate it and vote on its co-op %
Connect
VPN needed
Players
2
Tested
Not checked
Features
Story co-opOpen source
Latest release
v0.24 Sep 29, 2026
Last activity
Active Sep 29, 2026
GitHub stars
5
About this project

Two-player co-op on Arx Libertatis with shared quests and proximity voice chat; marked early work in progress, release 0.22, GPL-3.0. Author says it has never been properly tested over the internet. Last push 2026-09-29.

What you need

Your own copy of Arx Fatalis.

Sources
Repository ↗Suggest a correction

ArxCoop (Parricidium)

Parricidium

C
RoughAlpha builds, or partial sync without the story. Expect desyncs and crashes.
Stage
In development
Co-op
35%
Synced
  • See each otherUnknown
  • StoryUnknown
  • EnemiesUnknown
  • WorldUnknown
  • ItemsUnknown
Players say
Rate it and vote on its co-op %
Connect
VPN needed
Players
2-4
Tested
Not checked
Features
Open source
Latest release
v2026.09.14aj Sep 14, 2026
Last activity
Active Sep 24, 2026
GitHub stars
0
About this project

2 to 4 player co-op fork of Arx Libertatis with English and French support, HD and classic builds (all players need the same version). Designed for LAN or VPN and never tested over real internet latency. GPL-3.0, last push 2026-09-24.

What you need

Your own copy of Arx Fatalis.

Sources
Repository ↗Suggest a correction

Know another co-op mod for Arx Fatalis? Submit it.