Learn Eustress
Eustress is a source-available simulation and data platform built in Rust. These guides cover building a Space, giving it behavior, simulating it, publishing it, and handing it to AI agents.
23 guides, each ending with what comes next
Start Here
New to Eustress? Read these five in order, and branch into any track below.
- 1
Getting Started
Install Eustress Engine, create a Universe and a Space, and press Play.
- 2
Studio
Find your way around the editor: Explorer, Properties, tools and shortcuts.
- 3
Building
Build with parts, materials, CSG, terrain and light.
- 4
Scripting
Give the world behavior with Rune, and build from the command bar in Luau.
- 5
Simulation
Run it forward, measure it, and compare runs.
Build
Make the world: the editor, parts and materials, 2D and 3D views, parametric CAD, imports, interfaces and sound.
NEWStudio
The editor: Explorer and its search, Properties, Insert Object, tools, History, shortcuts, modes and MindSpace.
Building
Parts and their properties, materials, CSG, terrain, lights and atmosphere.
NEWPerspective
2D and 3D views, perspective and orthographic, one world with no conversion.
NEWCAD
Parametric parts on a B-rep kernel: features, variables, booleans and export.
NEWImporting
Bring in Roblox places, glTF and GLB models, Gaussian splats, images, video and data.
UI Systems
Screen and in-world interfaces for the people inside a Space.
Audio
The Sound object, SoundService, audio formats, and where playback stands.
Script
Give it behavior with scripts, through the services every Space starts with.
Simulate
Run it: physics, the simulation clock, physical-law models, and Universes you can branch.
Physics
Avian rigid bodies, colliders, constraints, queries, deformation and fracture.
Simulation
The simulation clock, time compression, watchpoints, recordings and experiments.
Realism
Material science, thermodynamics and electrochemistry models, with a worked case study.
Universes
Where work lives: Space folders, the WorldDb, git history, and branches for what-if runs.
Ship
Share it: multiplayer, publishing, live values for websites, and earning.
Networking
What runs today for multiplayer, and the transport that comes next.
Publishing
Publish a Universe from Studio: sign-in, the package, review, and its page on eustress.dev.
Website Service
Mark values as References, publish once, and every number on your site updates from one fetch.
Earning
Bliss (BLS) for contributions, Tickets (TKT), and how payouts work.
Agents & Tools
Drive it from outside: AI agents over MCP, the command line, and your own editor.
MCP Server
Give an AI agent tools to read, build and simulate inside your Spaces.
NEWCLI & Headless
Open, list and close engines from a terminal, and run Spaces with no window.
IDE Integration
Edit scripts in your own editor, with changes picked up by the running engine.
Rune LSP
The Rune language server: diagnostics, hover and navigation for Rune scripts.
Foundations
Where to begin, and why Eustress is built the way it is.
Reading this as an AI assistant?
Every guide is served as plain HTML, and /llms.txt lists them with one-line summaries. To act inside a Space rather than read about it, connect the MCP server.
