Build a kart racing game from a single prompt to compare coding agents
backerd_ceo5 built a Mario Kart-style racing game with GPT Codex and Claude Code from one prompt to benchmark artistic quality.
Source
@backerd_ceo5 on X · 2026-10-21
Written in our own words. Credit to the original author. Link checked 2026-10-24.
What they did
backerd_ceo5 built a Mario Kart-style racing game with GPT Codex and Claude Code from one prompt to benchmark artistic quality.
Result (as claimed)
A side-by-side test of which agent makes better-looking games.
Tools they used
Cost: Pricing depends on the tools you pick; check each official pricing page.
Set it up
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.
Start the project with your agent
Open Codex and paste the brief. Ask it to propose a stack and a file plan before writing code.
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.
Test it like a user
Click through on desktop and phone. Ask the agent to add basic tests and fix anything that breaks.
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 kart racing game from a single prompt to compare coding agents What the original author did: backerd_ceo5 built a Mario Kart-style racing game with GPT Codex and Claude Code from one prompt to benchmark artistic quality. Reported result (as claimed by the author): A side-by-side test of which agent makes better-looking games. Source: https://x.com/backerd_ceo5/status/2112876268727456130 Tools they used: Codex, Claude Code 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.
You are helping me set up this AI use case end to end in Codex. Goal: Build a kart racing game from a single prompt to compare coding agents What the original author did: backerd_ceo5 built a Mario Kart-style racing game with GPT Codex and Claude Code from one prompt to benchmark artistic quality. Reported result (as claimed by the author): A side-by-side test of which agent makes better-looking games. Source: https://x.com/backerd_ceo5/status/2112876268727456130 Tools they used: Codex, Claude Code 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.
You are helping me set up this AI use case end to end in Grok Bot. Goal: Build a kart racing game from a single prompt to compare coding agents What the original author did: backerd_ceo5 built a Mario Kart-style racing game with GPT Codex and Claude Code from one prompt to benchmark artistic quality. Reported result (as claimed by the author): A side-by-side test of which agent makes better-looking games. Source: https://x.com/backerd_ceo5/status/2112876268727456130 Tools they used: Codex, Claude Code 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 compare AI models on the same prompt · How to run multiple coding agents together · How to use Claude Code and Codex together · How to make a Godot, Unity or 3D game with AI agents
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