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prototype-fast

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Build a playable prototype in about an hour to answer one question — is it fun? — with greybox primitives, a hard timebox, and explicit keep/kill criteria. Use when prototyping a mechanic, making a vertical slice or MVP, greyboxing/blockout, or judging throwaway vs keep.

skills/workflows/prototype-fast/SKILL.md

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# Prototype Fast

Get a mechanic into a player's hands fast to learn whether it's worth building. The output of
a prototype is a **decision** (keep / kill / refactor), not a product. Optimize for learning
speed, and decide up front whether the code is throwaway or load-bearing.

## When to use

- Use when validating a single mechanic or "what if", building a vertical slice / MVP,
  greyboxing a level or interaction, or de-risking an idea before committing real time.
- Use when the user says "just get something playable", "is this fun?", or "rough it in".

**When *not* to use:** a timed competition with a deadline and a submission (use `game-jam`);
shipping or updating a real release (use `steam-publish` / `itch-publish`); building the
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