# Cartoon kart racer for split-screen TV > Turbo Kartz, a chunky cartoon kart racer for one to four players with jump ramps, nitro, and four tracks, playable in a browser or on a TV with gamepads. Built in Claude Code over 20 short requests: 12 to Sonnet 5.5, then 8 to Opus 5.5. - Kind: Game - Live game: https://www.kartit.net/games/turbo-kartz/ - Page: https://meetreference.com/v/cartoon-kart-racer-split-screen-tv/ - Ready-to-use agent handoff: https://meetreference.com/v/cartoon-kart-racer-split-screen-tv/agent.txt - Exact prompt as plain text: https://meetreference.com/v/cartoon-kart-racer-split-screen-tv/prompt.txt - Authorship: Not stated - Made with: Claude Code - Model: Claude Sonnet 5.5, Claude Opus 5.5 - Built with: Three.js, HyperFrames - Services: Lyria 3 Pro, Codex image generation - Style: Games; kart racing, cartoon, low poly, split screen, three.js, party game, gamepad - Shared by Anass Kartit in Blog, Oct 2, 2026: https://www.kartit.net/games/turbo-kartz/prompts.html - Prompt fidelity: Partial. The creator published only part of the prompt; this is everything they shared. ## Before you start Guidance from Reference, separate from the creator's instructions. 1. Read the reference and inspect the project, installed libraries, and available agent skills before writing code. Reuse suitable tools already present. 2. Prefer the creator-reported libraries and skills when they fit the task. Explain what useful additions help with, and install missing project dependencies or relevant skills from official sources when the environment and the user's existing permissions allow it. Respect the project's package manager and setup rules; do not ask again for routine setup already authorized. 3. Distinguish tools used by the creator from your own recommendations. A listed tool is not automatically required, and an empty tools or requirements list means the setup is unknown, not that nothing is needed. 4. Ask concise questions when missing inputs or choices materially affect the result: paid services, credentials, the user's assets, or a different production approach. Use existing answers and permissions; continue independent work while waiting. 5. If a useful library, skill, or service cannot be installed or used, explain an available alternative and its expected effect on quality, features, or effort. Get the user's choice before a material compromise; otherwise state the fallback and continue. Never silently simplify the result or claim to have used a tool you did not use. Requirements reported by the source: Lyria 3 Pro access for the music and sound effects; Codex or another image model for the track pictures; Android tooling and an Android TV, only for the APK requests. ## Recreating this game These are the creator's published instructions, unedited. To adapt it: Keep the order of the requests and change the subject: "a cartoon kart racing intro" in the first and "chunky, colourful cartoon characters" in the fifth. Leave out the Sony Bravia and APK requests if you only want it in a browser. ## Prompts ### 1. Request 1 (Sonnet 5.5) ```text Create a 3D animation using HyperFrames and Three.js for a cartoon kart racing intro, a game motion graphics trailer. ``` ### 2. Request 2 (Sonnet 5.5) ```text Make it a 2.5D cartoon, 3D-ish game. ``` ### 3. Request 3 (Sonnet 5.5) ```text It needs improvement on the hands holding the wheel. ``` ### 4. Request 4 (Sonnet 5.5) ```text Also add a fully playable stage demo. ``` ### 5. Request 5 (Sonnet 5.5) ```text You can do better in terms of graphics. We need chunky, colourful cartoon characters. ``` ### 6. Request 6 (Sonnet 5.5) ```text We need a way to turn this into a game ready for Android. ``` ### 7. Request 7 (Sonnet 5.5) ```text Car selector with powers. ``` ### 8. Request 8 (Sonnet 5.5) ```text Fix the stadium collisions, and the arrival. ``` ### 9. Request 9 (Sonnet 5.5) ```text The Blaze character has only one eye. Kinda scary. ``` ### 10. Request 10 (Sonnet 5.5) ```text Adapt the game to the D-pad remote and push it to my Sony Bravia TV as an APK. ``` ### 11. Request 11 (Sonnet 5.5) ```text Make it easy and fun to play with the TV remote, for kids. ``` ### 12. Request 12 (Sonnet 5.5) ```text Add Bluetooth controller pairing and split screen. ``` ### 13. Request 13 (Opus 5.5) ```text On the TV it plays alone. Fix the split screen: pick players and detect the gamepads. ``` ### 14. Request 14 (Opus 5.5) ```text Add an easy mode for solo play. It is too easy to hit the sides. ``` ### 15. Request 15 (Opus 5.5) ```text Let each player pick a character with their own remote or gamepad, coloured differently. ``` ### 16. Request 16 (Opus 5.5) ```text Add a gamepad tutorial. Easy buttons: triggers to drive, X for a nitro boost. ``` ### 17. Request 17 (Opus 5.5) ```text Make the cars able to jump and fly over ramps. ``` ### 18. Request 18 (Opus 5.5) ```text Add cool background music and sound effects with Lyria. ``` ### 19. Request 19 (Opus 5.5) ```text Add more tracks. Use Codex to generate the images. ``` ### 20. Request 20 (Opus 5.5) ```text Make it playable online with gamepads and split screen, on Mac and Windows. ``` ## What it looks like Written by Reference from the video frames, not by the creator. Gameplay of a chunky cartoon kart racer, from solo races to four-way split screen, cut with the creator's callouts and captions and ending on cost and prompt cards. - Color: Saturated cartoon colors: grey road with red-and-white kerbs, lime and mint grass, pastel trees, a pink candy track, and purple cards with yellow and green highlights. - Type: Heavy rounded display type for place and speed (1ST, 208 KM/H), player tags such as P1 · GAMEPAD 1, yellow callout boxes (CLAUDE the code, NEW ID AFTER SLEEP), burned-in captions, and a cost table titled THE WHOLE BILL · EVERY TOOL. - Framing: 16:9. A chase camera behind the kart with the HUD around the edges; split screens stack two or four views, and comparison shots put before and after side by side. - Sound: Narration in an ElevenLabs voice, per the video's cost card; the game's music and sound effects are from Lyria 3 Pro, according to the creator. - Structure: Two-player split screen, a pink candy track, a CLAUDE the code callout, a before-and-after of the invisible-road fix, a 7 wall hits test in manual mode, four-player split screen, a solo race, the bill of tools and costs, and 2 PROMPTS YOU CAN REUSE. Storyboard, nine frames spread across the video: https://meetreference.com/media/cartoon-kart-racer-split-screen-tv/storyboard.webp - Frame 1 at 49.5s: https://meetreference.com/media/cartoon-kart-racer-split-screen-tv/f1.webp - Frame 2 at 82.5s: https://meetreference.com/media/cartoon-kart-racer-split-screen-tv/f2.webp - Frame 3 at 115.5s: https://meetreference.com/media/cartoon-kart-racer-split-screen-tv/f3.webp - Frame 4 at 148.5s: https://meetreference.com/media/cartoon-kart-racer-split-screen-tv/f4.webp - Frame 5 at 181.5s: https://meetreference.com/media/cartoon-kart-racer-split-screen-tv/f5.webp - Frame 6 at 214.5s: https://meetreference.com/media/cartoon-kart-racer-split-screen-tv/f6.webp - Frame 7 at 247.5s: https://meetreference.com/media/cartoon-kart-racer-split-screen-tv/f7.webp - Frame 8 at 280.5s: https://meetreference.com/media/cartoon-kart-racer-split-screen-tv/f8.webp - Frame 9 at 313.5s: https://meetreference.com/media/cartoon-kart-racer-split-screen-tv/f9.webp ## How it was made, per the creator - One-shot: no - Reported spend: Lyria 3 Pro at $0.08 per call, $0.40 logged for the music and sound effects. The creator didn't log tokens, so there is no figure for the code. - Notes: The creator says the requests are "lightly trimmed"; the write-up adds "I fixed typos and trimmed a few for length." Claude Sonnet 5.5 built the game in the first 12; Claude Opus 5.5 fixed the TV split screen and added an easy mode, gamepad support, jump ramps, and more tracks in the last 8. HyperFrames made the trailer. The race and menu music and the sound effects came from three Lyria 3 Pro prompts, and the track pictures from Codex image generation given screenshots of the game; those prompts are on the same page. The video's opening animation is Gemini Omni Flash, not gameplay, so this entry starts after it. > Ship early, hand the controller to someone else, and paste their complaints into the prompt box word for word. > (Anass Kartit) ## Links - Play game: https://www.kartit.net/games/turbo-kartz/ - Watch: https://www.youtube.com/watch?v=-5MUGPm92m8 - Original post: https://www.kartit.net/games/turbo-kartz/prompts.html - Write-up with the bugs and fixes: https://www.kartit.net/blog/claude-sonnet-5-5-kart-racer-sony-tv-split-screen