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EZYE OS · AI Building
Opus 5 vibe-coded a working game from one prompt.
Here's the exact way to build software without writing code.
The prompt structure, iteration loop, and guardrails I used to get a playable Katamari clone out of Claude Opus 5 in a single afternoon.
What's inside
- The one-shot prompt structure that ships playable builds
- How to scope a game so Opus doesn't wander
- The iteration loop that fixes bugs without breaking the build
- Token and cost guardrails so you don't burn 290M
EZYE OS · AI Building Cheat Sheet
Vibe-Code a Working Game with Claude Opus 5
by Divjot Sahni · EZYE Consulting · ezye.com.au
The One-Shot Prompt Structure
1
Open with the exact game you want cloned and its single core mechanic
2
State the tech target so Opus picks a runnable stack instead of guessing
3
Lock the win condition and the fail condition in one line each
4
Add the line that forces a fully playable output, not a snippet…
The Snowball Iteration Loop
1
Run it once, then play it before you type another word
2
Describe what broke in plain English, not code terms
3
Feed back one change at a time so nothing regresses…
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