Building Spinlings with Claude
A game build log covering shared rules between platforms and a desktop UI trap.
Earliest dated source:
The full story
Spinlings is a free, open-source creature game that runs inside Claude Code: pixel creatures battle above the prompt while Claude works, and players collect a three-creature team, trade cards and duel other players' saved teams. The original game was built with Claude, with Codex helping on later interface and testing work.
Creature generation and battle rules live in one TypeScript engine shared by offline play and the online server, which runs on a Cloudflare Worker with D1 storing collections, trades and duels. Battles use saved teams, so players don't need to be online at the same time.
A desktop bug where a card's text opened its details but its artwork didn't took more fixing than any new feature. The game makes no AI calls and doesn't read prompts, replies or project files; online play sends only game actions and a coarse model family.
How it was done
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Sources
From a short post by the maker, so the details are as they tell them.
- Reddit: Building Spinlings with Claude: shared game rules and the Desktop UI trapPublished
The maker's build log in r/ArtificialInteligence, linking to the source and screenshots.
If it disappears: archived copy of Reddit: Building Spinlings with Claude: shared game rules and the Desktop UI trap (opens in a new tab)