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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.

Install

npx skills add gamedev-skills/awesome-gamedev-agent-skills --skill prototype-fast -a claude-code

Installs to .claude/skills/prototype-fast/ · Each command fetches the skill straight from GitHub with the open skills CLI.

Download .zip

Byte-identical to the scanned commit, with the repository’s licence and a SOURCE.txt.

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Why 89

Security100
Provenance80
Maintenance100
Licence100
Adoption53

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