# Fradiation Games

> A browser-games portal. Developers upload web builds (Unity, Godot, Three.js and other HTML5 games); players play, rate, comment, earn rads and mutations, and vote new games out of containment.

Every doc below is plain Markdown. Agents: the easiest way in is the MCP server at https://www.fradiation.games/api/mcp (Streamable HTTP, OAuth sign-in in the browser, or an API token as `Authorization: Bearer <token>`). It serves these docs, the build rules and a fradiation.json check, and creates games, deploys builds, sets covers, runs playtests and reads feedback. Without MCP, developers upload builds in the dashboard (https://www.fradiation.games/dev), or deploy from a terminal with an API token: `FRADIATION_TOKEN=<token> node check-build.mjs deploy <folder> --game <slug>`. See the agents doc for connecting, deploying and the upload API.

## Start here

- [Publish a game](https://www.fradiation.games/docs/publish.md): The full path from invite code to released game. Create a draft, prepare and upload a build (in the browser or from a terminal), add a cover, preview it and submit it to containment.
- [Builds and uploads](https://www.fradiation.games/docs/builds.md): What a build is and what the uploader accepts. Zip or folder, limits, path rules, allowed file types, relative paths, the sandbox, caching, the builds list, retention and the storage limit.
- [fradiation.json](https://www.fradiation.games/docs/fradiation-json.md): The optional file at the top of a build that sets the entry point, viewport and threads, and declares mutations and scoreboards. Every field, limit and icon name.

## Engines

- [Unity](https://www.fradiation.games/docs/unity.md): Build a Unity Web (WebGL) game for Fradiation Games with the Unity kit, or set it up by hand, and call the SDK from C#.
- [Godot](https://www.fradiation.games/docs/godot.md): Export a Godot 4 project for the web and upload it to Fradiation Games. Untested on the site; it follows Godot's web export requirements and Fradiation's file rules.
- [Three.js and web engines](https://www.fradiation.games/docs/web.md): Ship a Vite, Three.js or plain HTML and JavaScript game on Fradiation Games. Covers relative paths, the SDK, resizing, browser permissions and what to watch for in other web engines.

## Build with it

- [The SDK](https://www.fradiation.games/docs/sdk.md): The JavaScript SDK a hosted game uses for mutations, scoreboards, playtest events and feedback. Files, API, modes and patterns.
- [Working with agents](https://www.fradiation.games/docs/agents.md): Connect your coding agent to Fradiation over MCP, what it can do there, the machine-readable files and skill, deploying with an API token, the upload API, and prompts to give it.

## On the site

- [Playtests](https://www.fradiation.games/docs/playtests.md): Share a private link that serves any build you choose, then read what testers said, with play time, device and errors attached.
- [Containment](https://www.fradiation.games/docs/containment.md): How new games are judged. A 48-hour vote by players to release or bury, who can vote, how weight works, the exact bury rule, payouts, and how a buried game comes back.
- [Rads and mutations](https://www.fradiation.games/docs/rads.md): How players earn rads, what exposure levels do, how mutations and badges work, and what happens to progress made before you sign in.

## Files for agents and tools

- [fradiation.schema.json](https://www.fradiation.games/fradiation.schema.json): JSON Schema for fradiation.json.
- [build-rules.json](https://www.fradiation.games/docs/build-rules.json): Limits, file types and path rules, from the code that enforces them.
- [SKILL.md](https://www.fradiation.games/skills/fradiation/SKILL.md): Agent skill: prepare, check, package and deploy a build.
- [check-build.mjs](https://www.fradiation.games/skills/fradiation/check-build.mjs): Check a build against the real rules, zip it, or deploy it with an API token. Node 20+, no dependencies.
- [fradiation.zip](https://www.fradiation.games/skills/fradiation.zip): The skill folder, zipped.
- [fradiation-unity-kit.zip](https://www.fradiation.games/kits/fradiation-unity-kit.zip): Unity kit: build script, WebGL template, C# SDK bridge.
- [fradiation-sdk.mjs](https://www.fradiation.games/sdk/fradiation-sdk.mjs): The SDK as an ES module.
- [fradiation-sdk.js](https://www.fradiation.games/sdk/fradiation-sdk.js): The SDK as a script tag (window.fradiation).
- [fradiation-sdk.d.mts](https://www.fradiation.games/sdk/fradiation-sdk.d.mts): TypeScript types for the ES module (save it next to fradiation-sdk.mjs).

## Optional

- [Design system](https://www.fradiation.games/docs/yellowcake): Yellowcake, the site's components and tokens (HTML only).
- [Privacy policy](https://www.fradiation.games/privacy)
- [Terms of service](https://www.fradiation.games/terms)