OpenGameBuilder

OpenGameBuilder is an independent, community-led open-source reimplementation and extension of MyGameBuilder, the original Flash game-making site. It is not an official continuation of MyGameBuilder.

What works today

The project is in early development. This repository currently provides a .NET API and a standalone Blazor WebAssembly frontend. The home page fetches application information from /api/about and displays the name and version; the API also exposes /api/alive for liveness checks. Aspire launches the two applications locally, and automated tests cover API and client behavior.

There is no playable game runtime, game importer, or editor yet. APIs and architecture may change before v1; original-game compatibility is not established.

The next milestone is to make the foundation ready for engine development. The first engine milestone's compatibility goal, independent fixture, and acceptance criteria are still to be agreed through a public proposal. Full original-site recreation and broad game compatibility are outside this initial foundation work.

Start contributing

  1. Follow the Windows development setup to install the supported tools, build, test, and run the application. It also covers Visual Studio and VS Code. Local development does not require Docker, a database, production credentials, or Discord access.
  2. Read the contribution guide and testing guidance before changing code. If you use AI tools, follow the AI policy.
  3. Pick a bounded task from the public roadmap or open issues. Check existing issues before starting, and propose larger changes before implementation as described in the contribution guide.

The documentation index maps the application, operating guides, and browser/accessibility expectations. Browse the published searchable documentation for the latest explicitly published guides.

Useful starting tasks include following the setup guide in your editor and reporting a reproducible failure, improving an unclear setup instruction, or adding a focused regression test for an API/client bug. Fresh-checkout editor verification remains open. Engine contributors can help define a small, independently testable milestone through a public proposal.

Use the issue forms for reproducible bugs and concrete proposals. See support for help and security reporting for private vulnerability reports.

Implementation, archive, and original site

  • This repository contains the new OpenGameBuilder implementation, its tests, and contributor documentation.
  • The MyGameBuilder archive is a separate preservation repository for historical MyGameBuilder material. You do not need it to build or run this application.
  • Original MyGameBuilder is the historical Flash site whose behavior informs the community's compatibility goals. This project does not claim to be the original service or its official successor.

Compatibility work should use observed behavior, independently written notes, and safe project-created fixtures. Do not copy or translate decompiled original client source into this implementation; see the source-material policy. Do not post private archived data or original proprietary assets in public issues.

License

This implementation is licensed under Apache License 2.0. That license does not grant rights to original MyGameBuilder assets or archived material.

Build and deployment

For deployment operations, see hosting setup. Aspire is the local launcher; production hosting uses Docker Compose. These workflow badges describe automation status, not game compatibility or feature completeness.

CI CD Staging CD Production

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