A playable Godot jam starter that tests itself (free sample)

Save the python block in this file as jam_starter.py and run python3 jam_starter.py my-jam. Then run the Godot self-test headless and paste the exit code.
Read AGENTS.md and JAM.md, and wait for me to fill in the theme and say which milestone to start.

The rules and the plan are in the file.

# Godot jam starter that tests itself (free sample of the Game Jam Kit)

Version 1.0, 2026-10-28. By PaperChaseWebb. Works with Grok Bot, Claude Code, Codex and Hermes. Free. One Python 3 script, standard library only. The game it writes was run on Godot 4.7.2, headless and with a window.

This is the part of the Game Jam Kit (pp-game-jam-kit, $29) you can use tonight: one command writes a small playable Godot 4 game, a 48-hour plan with seven milestones, the agent rules and three empty ledgers. The game can play itself headless and tell your agent whether it still works. The full kit adds the Unity two-day PRD, the three owner approval steps with hashes, the scope-cut checklist, a fifteen-check read-only jam_check.py tested on a seeded fixture, a tested LLM proxy for games and twelve prompts.

## Install in one line

Save this file, then in the same folder:

```
awk '/^```python$/{f=1;next}/^```$/{f=0}f' playable-godot-jam-starter-that-tests-itself-free-sample.md > jam_starter.py && python3 jam_starter.py my-jam
```

Or tell your agent: "Save the python block in this file as jam_starter.py and run python3 jam_starter.py my-jam." Then:

```
godot --path my-jam                              # play: survive 30 seconds, arrows or WASD, R to restart
godot --headless --path my-jam -- --selftest     # the game plays itself and exits 0 or 1
python3 jam_starter.py check my-jam              # five quick checks on the plan and files
```

You need Python 3.8 or newer and Godot 4.3 or new