Pre-release

This release is a pre-release and may not be stable for production use.

pygodide

BETA — everything is subject to change

Pronounced "pie-go-died", pygodide turns Pygame projects into browser apps using Pyodide. It bundles your code and assets, installs Python dependencies in the browser, and generates the HTML and JavaScript needed to run your game on the web.

Documentation: https://elan456.github.io/pygodide/

Install

pip install pygodide

Quick start

From your project root:

pygodide build .
pygodide serve .

Open http://localhost:8000 in your browser.

By default, pygodide looks for main() in main.py, reads dependencies from requirements.txt or pyproject.toml, and auto-converts simple synchronous game loops for the browser.

You can also build and serve in one step:

pygodide build . --serve

Use a different port with pygodide serve . --port 3000.

Full guide

The instructions cover troubleshooting, custom entry points, dependencies, manual async conversion, and smoke testing.

Common commands

Command	What it does
`pygodide build .`	Bundle your project into `build/`
`pygodide serve .`	Serve the built app locally (default port `8000`)
`pygodide smoke .`	Build and test in a headless browser
`pygodide smoke . --verbose`	Show full build and smoke output on the console
`pygodide build . --app game:start`	Use a different entry function
`pygodide build . --dep numpy`	Add an extra dependency for this build
`pygodide build . --no-auto-async`	Disable automatic game-loop conversion

Build output is logged to build/pygodide-build.log. Smoke tests also write build/pygodide-smoke.log.

Examples

Sample projects live under test_targets/:

ball bouncing — minimal async Pygame game
not async — sync loop converted automatically at build time
numpy particles — larger game with extra dependencies

Try one locally:

pygodide build test_targets/ball_bouncing
pygodide serve test_targets/ball_bouncing

Developing

git clone https://github.com/Elan456/pygodide.git
cd pygodide
uv sync --dev
uv run pre-commit install --hook-type pre-commit --hook-type pre-push

Run the same checks as CI:

uv run ruff format --check .
uv run ruff check .
uv run pytest

Smoke tests

pygodide smoke builds an app and launches it in headless Chromium. End-user projects do not need any extra manifest file.

uv run playwright install chromium
uv run pygodide smoke /path/to/your/pygame/project

The repository also maintains fixtures under test_targets/, each with a testing_manifest.yaml. Run the full fixture suite with:

uv run pygodide smoke test_targets --suite

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Source Distribution

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