Build a game level from a design doc

They used Grok 4.5 to create a new level for an existing Three.js game, then cleaned up and polished the result by hand.

Done with Grok Bot· Advanced· Jul 2026

What they did
A developer pointed Grok 4.5 at a very detailed game design document and an existing Three.js project, with their own game-dev harness wrapped around the model. They asked it to build level 2 in the style of the current game code. After the agent finished, they went back in for manual cleanup and polishing.
How it went
The outcome was a playable level for the game. The developer said it still needed work in a few places, so they kept refining it afterward. They also noted that Grok was fairly cheap compared with some other model tests they had tried.
Tips
This works better when the design document is specific and the target project already has clear code patterns to follow. Plan on human cleanup after the agent’s first pass, not just a single prompt-and-done run.

Try it yourself with Grok Bot

Read the design document at [path to design doc] and inspect the existing [engine/framework] game in [path to project]. Build [level name/number] to match the document, using the project’s existing style and code structure. After you make changes, run a check to confirm the level loads and is playable. Before doing anything irreversible, such as deleting files, submitting changes, or altering saved content, stop and ask me to approve. Then report what you completed, what still needs manual cleanup, and any parts you could not implement.

Fill in the [brackets]. Agents can make mistakes, so review anything before it is sent, paid or deleted.

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