[New Game] Add a new vibe-coded game

## Summary

Want to contribute to this repo? Create a new **vibe-coded game** and submit it as a PR. Pick any game idea you like, keep it self-contained in its own folder, and include the required prompt artifacts so others can understand how it was generated and iterated. ## Before You Start

Please read `CONTRIBUTING.MD` and follow all contribution rules. Key requirements from `CONTRIBUTING.MD`:

• Add the game in its own folder (e.g., `my-new-game/`)
• Include `prompt.md` (initial prompt used)

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