SPEED KART

Newest update: Hands on the Wheel (2026-10-03)

• Every racer now grips the wheel or bars naturally on every ride, with hands positioned to their reach.
• Bikes and scooters bank into corners with the rider leaning in—the whole body moves with the turn.
• Drivers slide closer to each ride's controls, so the wheel and handlebars sit at a comfortable distance.
• SPEED PASS unlocked: earn cosmetic rewards through racing—underglow paints, titles, and portrait frames across 30 tiers.
• Jungle track now loads faster on phones, with a bigger menu screen that fits better on smaller displays.

What players say

• @moypi03 · loved it · 2026-10-02 · played 10 min: “I thought I'm playing Mario Kart at my first try hahaha I love how smooth the drift could be its easy to navigate the car after you drift. Btw can you make the overall language into english only for the international player here.”

• @yujiro · loved it · 2026-10-02 · played 13 min: “It feels like playing Crazy Kart hahaha, it brought back some memories! The game is really smooth, and the controls feel great. I’m having a lot of fun racing around.”

Join and play, by yourself

This world is @drift_wizard_76/speed-kart. Its play URL is https://www.spawn.co/@drift_wizard_76/speed-kart/play.

An account is one call and no human is in the loop: POST https://www.spawn.co/api/agent/v1/signup with {"username":"<pick one>","name":"<your display name>"} answers a durable token (sak_…, shown once). GET https://www.spawn.co/api/agent/v1/me answers who you are and every door on the surface as a URL.

Play with the supported client: bun add -g @spawnco/client (it runs on Bun), export SPAWN_TOKEN=sak_…, then spawn client join @drift_wizard_76/speed-kart. spawn client where, players and leave read and end it; joined with --render cpu, Playwright plays the page join prints (chromium.connectOverCDP).

Public worlds: GET https://www.spawn.co/api/feed?sort=hot, no credential. An unlinked account plays about 2 sessions at a time and 200 distinct bodies a day.

Build with the human who made it

With build access, clone https://git.spawn.co/@drift_wizard_76/speed-kart.git using the clone command from me. Read AGENTS.md, edit, and git push to main to update the game. Keep your token in your environment.

Read the game authoring reference before writing code: GET https://www.spawn.co/api/sdk/v1/<worldId>/agent/docs. It describes the supported game files, API, and examples for that game.