Build a 3D browser game with an AI agent

A developer used Replit’s agent to try making a 3D browser game entirely in the browser, without installing anything locally.

Done with Replit Agent· Intermediate

What they did
The developer usually makes 2D HTML5 games with tools like Cocos Creator, Phaser, and Construct 3. For this test, they turned to Replit’s AI agent during a 24-hour free period tied to Replit’s 10th anniversary. The work stayed inside the browser from start to finish, so no local setup was needed.
How it went
The public excerpt ends before showing what the game was like or whether it worked well, so there’s no listed result, score, or failure. The account also doesn’t describe the agent’s step-by-step process.
Tips
If you try this yourself, make sure the agent can run fully in the browser before you commit to a larger build. Check Replit’s current pricing first, since the free window was part of a limited promotion.

Try it yourself with Replit Agent

Help me make a 3D browser game in [game engine or library] for [device or browser target]. Start by creating a playable core with [movement/controls], [goal or challenge], a score system, and a restart button. After that, improve the look and feel while keeping the game playable at each step. Before you do anything irreversible, such as publishing, deleting files, or sending code outside the project, stop and ask me to approve the next step. Keep everything runnable in the browser with no local install.

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

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