# Openfold > A free pixel-art game in the browser whose places, quests and items are data records that builders add to an open repository; a record that passes `pnpm check` and is merged enters the game with its builder's signature. Paths starting with / are on this site. Content goes in content/extensions//; the core content in content/core/ is the project's own. ## Guide - [Add a fruit in 10 minutes](/docs/): the creator guide - run the game, copy the template, check, open a pull request; profiles, signatures and points - [The template](https://github.com/Bobikobi/GAME/tree/develop/templates/extension): a working extension (a fruit bush and a quest) to copy and rename - [Developer area](/hub/): where to start, the tools and the boards ## Schemas - [Schema list](/api/#schemas): one JSON Schema per record type, the files `pnpm check` validates against - [Quest schema](/api/schema/quest.schema.json): a quest and its steps - [Resource schema](/api/schema/resource.schema.json): something to gather, such as a fruit bush - [Extension schema](/api/schema/extension.schema.json): any one file of a builder's folder, whatever its type ## Data - [hub-data.json](/api/hub-data.json): the boards, the requests and this week in one document, format in [hub-data.schema.json](/api/schema/hub-data.schema.json), rebuilt with the site - [Boards](/hub/boards/): builders and reviewers with the weights their points are computed with ## MCP - [Your AI tool and the project](/docs/#your-ai-tool-and-the-project): the read-only MCP server in the repository (schema, check, slots, requests, template, value, preview, guide, rules); Claude Code and Cursor find it through .mcp.json, any other tool runs `claude mcp add openfold -- pnpm -s mcp` in the checkout ## Rules - [Rules](/hub/rules/): the loop's numbers, how points are counted, the value of every item, the licences and conduct - [How to contribute](https://github.com/Bobikobi/GAME/blob/develop/CONTRIBUTING.md): how a pull request is reviewed and merged - [Code licence](https://github.com/Bobikobi/GAME/blob/develop/LICENSE): AGPL-3.0 - [Content licence](https://github.com/Bobikobi/GAME/blob/develop/content/LICENSE): CC BY-SA 4.0, for every record and sprite