Mapgen1 - vibecoded

 from Red Blob Games
3 Aug 2026

In August 2026 I decided to try “AI vibe coding[1]”, which means to use LLMs to generate all the code for the project, ideally without reviewing the code.

I picked a topic I’ve written plenty about: map generation. My initial prompt was

Create a project to show a noise-based procedural map generator
following https://www.redblobgames.com/maps/terrain-from-noise/ .

I wanted to keep track of the history so I made a git repository and told Gemini:

After every change you make to the codebase, automatically stage
all changes and commit them. Use the user's most recent prompt as
the git commit message.

My attempts:

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