itch.io

Models

• Claude Opus, in Claude Code: wrote all the code, levels and art. One lead session ran parallel helper agents.
• Meta MusicGen (musicgen-medium): the music.
• AudioLDM2: the sound effects. Both audio models ran through Hugging Face.

Tools

• The game: plain JavaScript, HTML5 Canvas 2D for graphics and WebAudio for sound. No engine and no build step.
• Testing: Node.js runs the test bot, and Playwright drives headless Chrome to replay the levels.
• Hosting: GitHub for the code, with Render auto-deploying every push. itch.io gets a zip uploaded by hand.

Techniques

• Levels: written as ASCII maps in a generator script.
• Graphics: almost all drawn in code, not image files.
• Determinism: the same inputs always play out the same way.
• Test bot: uses Wick's real physics to prove every level can be finished. It also sets the medal targets and the wax you respawn with at each torch.
• Replays: recorded runs are replayed in Chrome, and visual or sound changes must leave them exactly the same.
• Parallel agents: helper agents worked on different areas at once in separate copies of the repo, then their work was merged and checked.

Not bad. I got to level 3. It kinda reminded me of Zelda dungeon where you had to light torch. You may want to add a little more graphics / environment details - maybe there is more after level 3? And maybe some more enemies with different patterns? The wisps did do me in on level three I couldn't find the last torch to light and they widdled me down.