KART

Rainbow road. Top-down racing. Scream into your mic to trigger nitro boost. Three laps, one winner.

Built different

Race with your voice.

🎤

Voice-Controlled Nitro

Make noise. Get boost. The louder you are, the faster you go. Your mic is the nitro button.

🌈

Rainbow Road

Animated six-stripe rainbow track with glowing center line, just like you remember it — but top-down.

🏁

3-Lap Race

Lap timer, best lap tracking, finish line. Beat your personal best or challenge a friend on the same device.

📱

Touch Controls

Left third = turn left, right third = turn right, center = throttle. Top third = tap nitro. No hardware needed.

⚡

Physics Engine

Smooth Catmull-Rom spline track, friction model, off-road slowdown, and nitro gauge that recharges.

🌐

Zero Install

Pure browser. No download, no account, no ads. Open the link and race.

How to play

🏎️

Live in your browser

Open the link

Hit "Race Now". No account, no loading screen, no app store.

Allow microphone (optional)

Grant mic access for voice nitro — scream, clap, or whistle to boost. Keyboard Space also works.

Use arrow keys or touch

Up = throttle, Left/Right = steer. On mobile: tap screen thirds.

Complete 3 laps

Race the clock. Beat your best lap time. Go loud for max nitro.