# One-shot Tower Defence Prompt

Project: crest-alpha
Route: /tower-defense/
Skill: oneshot-tower-defense

Goal
- Build a complete single-file tower defence game that opens in a clean playable setup state, not an end state.
- Keep the public path `/tower-defense/`, but use NZ English in visible copy.

Design direction
- Harbour ice line under a dark tactical sky.
- Big readable canvas grid, compact command panel, short labels, high contrast.
- No external libraries, images, models, or build step.

Systems
- Start overlay with clear start action.
- Buildable grid with fixed path.
- Three tower types: shard, beam, frost.
- Eight waves, credits, integrity, kills, reset, keyboard shortcuts.
- Click or tap a tower type, then click or tap an open tile.
- Enemies follow the path, towers fire automatically, and the end screen appears only after win or breach.

Output
- `index.html`
- `PROMPT.md`
- `artifact.json`