Build game worlds
with AI — in your browser.
Atreus is an AI-native game editor. Author content by conversation, generate art, design maps, and ship — no install, just open it and sign in. Humans and AI, in the loop together.
Runs in the browser and on desktop · one Heimech sign-in.
Actors
Zones
Battles
Dialogue
Quests
Scenes
Items
Music
you › add a tense reunion on the harbor map — 3 beats, a locked-door puzzle
atreus › drafting scene · linking actors lyra + kael · placing puzzle…
✓ scene “harbor-reunion” added — 3 beats, 1 puzzle, refs validated
you › generate a sprite sheet for the harbor sentinel
atreus › queued PixelLab job · streaming frames…
✓ 8-frame idle animation attached
Author with the agents you already use
What we make
Three things, one account.
A game editor, a developer tunnel, and the game we’re building with it — each on one Heimech sign-in.
Pricing
Simple, per-product.
One Heimech account, pay only for what you use. Start free, upgrade when you ship.
Atreus
$20/mo
The AI-native game editor
- ✓ Browser + native editor
- ✓ MCP authoring (ChatGPT/Claude)
- ✓ AI art via PixelLab
- ✓ Integrity-checked content
- ✓ Build & publish content.pak
Bifröst Pro
$5/mo
Durable developer tunnels
- ✓ Reserved *.tunnel subdomain
- ✓ Survives restarts
- ✓ SSE + MCP streaming
- ✓ Free tier: ephemeral URLs
Open the editor and build a world.
No install. Sign in with Heimech, create a project, and start authoring — by hand and with AI.