SPEEDRACER — Horizon

Race a procedural mountain circuit against seven full-physics rivals.

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ReleasedJust publishedLatest published build

Intelligence Seven autonomous racing opponents use individual racing lines, braking models, and driving personalities while running the same vehicle physics as the player. Procedural systems generate the circuit environment, terrain, atmosphere, weather, audio, and supporting world detail at runtime.creator disclosed

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About this world

It changes because
you were there.

SPEEDRACER — Horizon is a first-person browser racing game built around a 3.9 km procedural mountain circuit. Drive a high-performance car with a detailed tyre, suspension, drivetrain, aero, and stability simulation while seven autonomous opponents compete under the same vehicle physics. Change cameras, tune driving assists, shift the weather and lighting, and chase faster laps through a landscape generated entirely at runtime.

“Race a procedural mountain circuit against seven full-physics rivals.”— Rahil Bhansali, design thesis

AI inside the game Disclosure v1.0

What the intelligence does while you play:

Seven autonomous racing opponents use individual racing lines, braking models, and driving personalities while running the same vehicle physics as the player. Procedural systems generate the circuit environment, terrain, atmosphere, weather, audio, and supporting world detail at runtime.
Adaptive Npcs
Agentic Gameplay
Generated Worlds

Runtime modelSeven autonomous racing opponents use individual racing lines, braking models, and driving personalities while running the same vehicle physics as the player. Procedural systems generate the circuit environment, terrain, atmosphere, weather, audio, and supporting world detail at runtime.

The game runs locally in the browser and does not send personal information, account data, or gameplay telemetry to a remote AI service.

Content ratingeveryone

Realistic motorsport competition

Build permissionsNo sensitive permissions

No external network origins declared.

Storage policyPackage-origin storage

This curated package keeps its storage inside the constrained game frame.

Before you enter

Built for the open web.

No launcher or large install. Storage support depends on the creator build origin and is disclosed above.

BrowserChrome, Edge, Firefox, Safari

Memory2 GB available memory

ControlsKeyboard + Gamepad

ModesSolo experience · Shareable runs

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SPEEDRACER — Horizon

Play it, then rate it.

It changes becauseyou were there.

Built for the open web.

More worlds like this

It changes because
you were there.