Use anything on this page when you write about Arctaur or its products. Questions, interviews or early access: hello@arctaur.com.
| Studio | Arctaur |
|---|---|
| Based in | Denmark |
| The name | From arktos (bear) and taurus (bull): Bjørn and Tyr in Danish, the two brothers the studio is named after |
| Products | Ariadne, a writing tool for story-heavy games (Mac, private beta). Orbis, a god game (Mac and Windows, in development). Oplys, for what to read, watch and play next (web app, private beta, oplys.me). Kallus, a training log your AI plans (web app, private beta, getkallus.com). |
| Press contact | hello@arctaur.com |
The writing tool for branching, story-heavy games.
Ariadne is a narrative IDE. A game's story lives as plain text in its own repository, and the Mac app, the ariadne command line and an MCP server for Claude Code all work on those same files. Writers can play any scene as they write it, save playthroughs as tests, and walk every path to find dead ends and lines no player will reach. Ariadne makes no model calls of its own.
macOS. Private beta.
A god game about everything that ends.
Orbis is a cosmic god game about one universe, from its first instant to its last. The player is a will that wakes with the universe and shapes conditions rather than outcomes, in one unbroken zoom from outside the universe down to a single creature. Galaxies, worlds, species, peoples and faiths are all simulated; none of it is scripted. Built in Godot with a C++ simulation core.
Mac and Windows. In development; Steam page coming.
What to read, watch and play next, in an order that means something.
Oplys turns lists of books, films and games into one clear next pick for each, themed arcs that move from gentle to intense, and a journal of what stayed with you. There is no AI inside: people curate with the AI they already use, through files they carry between Oplys and a chat, and nothing changes until they approve it. The name comes from the Danish oplyse, to light up.
Web app for iPhone, Android and computers, at oplys.me. Private beta.
Your AI writes the plan. Kallus runs it.
Kallus turns a training, nutrition and supplement plan written by any AI into a log people run set by set. It suggests the next weight when a lifter is ready and never changes a weight without their OK, and it sends progress back to their AI for review. Logging, plans, sync and exporting all data stay free. It's the studio's odd one out: the others tell stories, and this one counts reps.
Web app for phone and computer, at getkallus.com. Private beta. Not medical advice.
Screenshots come from builds in development and may change.
