Real AI agent use cases, with sources and setup prompts

Build a multiplayer city driving game for your kid with four AI tools

A parent built a Midtown Madness-style driving game set in Chicago for his daughter in a week: Claude did the frontend and design, ChatGPT the backend, performance and multiplayer, ElevenLabs the music and sound effects, and Tripo the cars.

Free tier1 weekIntermediateSource linked

Source

@MrV_777 on X · 2026-10-17

Written in our own words. Credit to the original author. Link checked 2026-10-18.

What they did

A parent built a Midtown Madness-style driving game set in Chicago for his daughter in a week: Claude did the frontend and design, ChatGPT the backend, performance and multiplayer, ElevenLabs the music and sound effects, and Tripo the cars.

Result (as claimed)

Playable game built in a week.

Tools they used

ClaudeChatGPTElevenLabsTripo

Cost: ElevenLabs: free plan, paid from $6/mo; Tripo: free plan, paid from $20/mo. Checked 2026-10-14.

Set it up

  1. Write a one-page brief

    Describe the app in plain words: who it is for, the 3 core screens or actions, and what "done" looks like.

  2. Start the project with your agent

    Open Claude and paste the brief. Ask it to propose a stack and a file plan before writing code.

  3. Build one slice at a time

    Ship the smallest working flow first, run it, then add features one by one. Commit after each working step.

  4. Test it like a user

    Click through on desktop and phone. Ask the agent to add basic tests and fix anything that breaks.

  5. Check security and ship

    Keep keys in environment variables, check auth and database rules, then deploy and share the link.

Copy the full setup prompt

Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.

You are helping me set up this AI use case end to end in Claude Code.

Goal: Build a multiplayer city driving game for your kid with four AI tools
What the original author did: A parent built a Midtown Madness-style driving game set in Chicago for his daughter in a week: Claude did the frontend and design, ChatGPT the backend, performance and multiplayer, ElevenLabs the music and sound effects, and Tripo the cars.
Reported result (as claimed by the author): Playable game built in a week.
Source: https://x.com/MrV_777/status/2111602329518494008
Tools they used: Claude, ChatGPT, ElevenLabs, Tripo
Category: Vibe coding & apps

Please:
1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like).
2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure.
3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data.
4. Finish with a checklist to run it again next time.

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Guides for this use case

How to vibe code a game with AI · How to compare AI models on the same prompt · How to build apps and games for your kids with AI · How to use ChatGPT for real projects and everyday tasks

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