A downloadable game

A tabletop roguelike where your character is expected to die.

ERROR 441 is a free, lethal sci-fi/fantasy TRPG about exploration, survival and high-risk decisions.

Fast d6 rules · Lethal combat · Resource management · Random encounters · Character death

Not a video game — a tabletop RPG you can play with friends or solo.

Start playing in 5 minutes

Download the 1-page Mini Guide first. It contains the core rules you need to understand how ERROR 441 works.


START HERE

Don't want to read the full Rulebook?

Download the 1-page Mini Guide →

Learn the core mechanics in one page and decide if ERROR 441 is for you.


upd: 

Weapons Archive is now available!

A free expansion for ERROR 441 featuring experimental weapons, legendary artifacts, and dangerous relics recovered from the ruins of the old world.

Updated 17 days ago
StatusIn development
CategoryPhysical game
Release date Sep 25, 2025
Rating
Rated 5.0 out of 5 stars
(1 total ratings)
Authorskmuið
GenreSurvival
TagsFantasy, Horror, Indie, Roguelike, rules-lite, Sci-fi, Tabletop role-playing game
Average sessionA few hours
LanguagesEnglish
LinksInstagram, Threads
AI DisclosureAI Assisted, Graphics

Download

Download
Error441_Rulebook.pdf 56 MB
Download
Error_441_Mini_Guide.pdf 1.2 MB
Download
Error_441_Nightmares.pdf 31 MB
Download
Error_441_Weapons_Archive.pdf 88 MB

Development log

Comments

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Feedback is very welcome.

If you run the game, I’d love to hear how your sessions went.