The capybara delivery game built entirely through AI prompting

A capybara delivering food through a 3D city sounds like a joke pitch; the result is a playable browser game. In a July 9, 2026 build account, its creator described making it for Vibe Jam with AI-generated code and assets, while personally directing the design, prompts and playtesting.

Fifteen days, many iterations

According to the creator, Claude Code with Opus 4.7 generated roughly 27,000 lines of code over more than 188 commits in about fifteen days. The project uses Three.js. AI tools also supplied music, effects and rigging, while the creator built custom editing tools for the game world and cinematics. Those implementation figures come from the creator's own account; they are not an independent code audit.

The interesting part is the amount of direction around the generated work. The creator describes repeated testing and decisions about camera behavior, movement and game feel. It is a useful example of what a fully AI-produced codebase can still require from a human designer.

A jam winner, with a jam-sized scope

The creator reported winning the $25,000 Vibe Jam 2026 prize. The game is publicly playable in single-player and multiplayer modes. They also described it as a roughly five-to-ten-minute jam experience, and said they were not planning a Steam release because it lacked the progression needed for a longer game. The prize and build statistics are creator-reported; the live game is directly observable.

Sources: creator's July 9 build breakdown; play the game.

Project screenshot captured by CoderHype on October 1, 2026 for this independent editorial listing.