Motion Design · Oct 5, 2026

I've been building a 90s game store sim in Unity with Claude for over a month. What worked, what didn't, and a call for playtesters!

I've been building a 90s game store sim in… by LittleGumbee_, credited to Claude Opus 5.5. Watch the Motion Design video and visit the original Reddit post.

LittleGumbee_u/LittleGumbee_
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Opus 5.5
39 net upvotes on Reddit, checked Oct 7, 2026

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From the creator’s post · LittleGumbee_ on Reddit
For over a month I've been making my dream game 😄 **Level '92: Video Game Store**, a cosy shop sim set in autumn 1992. You stock shelves, price games, haggle over used games and get ready for release days It's built in Unity 6. All of the C# (about 60k lines now, gameplay plus editor tools) is written by AI coding agents: Claude Code (mostly Opus 5.5) and a little Codex. My job is direction: I wrote the brief, I make every gameplay call, I design and test all the systems, and I play every change before I accept it. I also place and adjust things in the scenes myself. What's working so far: \- One rulebook and a decision log. Every gameplay or design change gets a numbered entry with my exact words when I approved it. \- Automated checks inside Unity. A batch runner plays scripted shop days, checks saves, money and stock, renders screenshots of every screen and makes a build. "It compiles" is not "it works", so nothing counts as done until it passes and I've played it. \- Docs…
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