Marble Madness Remastered: Free 3D Browser Game Made by AI

# Marble Madness Remastered: A Free 3D Browser Game Built by AI in One Shot

Marble Madness Remastered is a free 3D marble racing game that runs right in your browser. There is nothing to download and nothing to install. Roll a glass marble down six floating courses, dodge pistons, acid pools and black steel balls, and reach the checkered goal before the clock runs out. It is a one-shot game: Claude Opus 5.5, Anthropic’s AI model, wrote the whole thing in a single pass, and you can play it now on Big-Apple.tv.

[VIDEO: marble-madness-promo.mp4 – poster image: video-poster.jpg]
Caption: 15 seconds of Marble Madness Remastered: six courses, launch pads, lifts and the race to the goal.

## What is Marble Madness Remastered?

It is a modern tribute to the 1984 arcade classic Marble Madness. The idea is the same: you guide a marble across a tilted, isometric obstacle course where one wrong move sends it over the edge. Everything else is new. The game has real-time 3D graphics, a physics engine that behaves like a real rolling ball, six hand-designed courses and controls for every device, from keyboard and mouse to trackpad, gamepad and touchscreen.

Each course takes somewhere between half a minute and two minutes to finish. That makes it a good fit for a quick break, but beating the par time and collecting every gem will keep you busy much longer.

## Six courses, each with a new idea

Every course introduces one new mechanic and then mixes it with the ones before it. All of them flow downhill toward the camera, just like the original arcade machine.

1. First Roll (Practice): ramps, ledges and a narrow bridge. You learn how momentum works.
2. Sunset Cascade (Beginner): black steel balls that shove you around, and launch pads that fling you across a gap, past a gem floating in mid-air.
3. Acid Works (Intermediate): timed pistons, an acid slalom, a lift down a drop that would shatter your marble, and an icy chute between acid gutters.
4. Sky Islands (Aerial): floating islands with no rails, a lift that carries you up to the next island, and long jumps over open sky.
5. Funhouse (Silly): a pinball room full of bumpers, a wavy lane and a huge bowl you swing through before climbing out.
6. The Gauntlet (Ultimate): everything at once, including a narrow bridge where you have to duck into an alcove while a steel ball rolls past.

Alt text: Marble Madness Remastered gameplay in the Acid Works course, a blue marble rolling between bubbling green acid pools with pistons in the background
Caption: Acid Works: one touch of the green acid and your marble dissolves.

## How to play

Your goal is simple: get your marble to the checkered goal before the timer reaches zero. Along the way you can:

– Collect gems for bonus points.
– Roll through checkpoints so you restart there instead of at the beginning.
– Earn up to three stars per course: one for finishing, one for collecting every gem and one for beating the par time.

Watch out for big drops. A fall of more than about three steps shatters your marble, which is why some courses give you a lift instead of a shortcut. Launch pads always set the same speed, so every jump lands in the same place once you line it up.

### Controls

– Keyboard: arrow keys or WASD to roll, P to pause, R to restart, M for sound.
– Mouse (Point mode): the marble rolls toward the spot under your cursor. The farther away you point, the faster it goes, and pointing at the marble brakes.
– Trackpad (Trackball mode): swipe with two fingers to spin the marble, like the trackball on the original arcade cabinet.
– Gamepad: supported on HTTPS pages in modern browsers.
– Phone and tablet: drag anywhere on the screen to steer.

There is also a two-player race mode on one screen: player one uses the arrow keys (or the mouse), player two uses WASD, and the first marble in the goal wins.

Alt text: Marble Madness Remastered Sky Islands course, a glass marble riding a glowing amber elevator between floating islands in the clouds
Caption: Sky Islands: the lift glows green when you can get on and amber while it moves.

## How it was made: a one-shot game built by AI

Marble Madness Remastered is a one-shot game. It was written by Claude Opus 5.5, Anthropic’s AI model, working in Claude Code, from a single request. It started from an older, simpler 2D version of the game. The request was short: analyze that version, then write a better one with better levels, better physics, a more logical design and graphics on the level of a modern game.

The AI first listed what was wrong with the old version. The levels were mostly open rectangles, so you could simply roll around the hazards. The physics had no real gravity or momentum. The graphics were flat 2D shapes. It then rewrote the game from scratch in that same pass: all six courses, the physics, the graphics, the sound and the menus.

### One file, no downloads

The whole game is a single HTML file of about 2,700 lines of code and roughly 145 KB. There are no image files and no sound files:

– Graphics: the 3D scenes use three.js on top of WebGL, with real-time shadows, reflections, a glow effect on bright parts and particle effects for sparks, confetti and shattering glass. All textures, from the tiles to the marble’s swirl, are drawn by code when the game starts.
– Sound: the music and sound effects are generated live with the browser’s Web Audio API, including a rolling sound that follows the marble’s speed.
– Physics: the game calculates the marble 240 times per second. Gravity pulls it along the actual slope under it, it keeps its momentum, it bounces off walls and rails, and hard landings can shatter it. The ground you see is exactly the surface the physics uses, so curved bowls and wavy floors behave the way they look.

### Tested by an autopilot

Instead of guessing whether the courses work, the AI wrote a small autopilot that drove the marble through every course inside the real game. It confirmed that all six courses can be finished, that every jump lands safely past the gap, and that each hazard kills when it should and only then. The par times were set from those runs.

### Small updates since then

The game itself came out of that one shot. Since then it has only had small quality-of-life updates: mouse and trackpad steering, and a clearer look for the lift on Sky Islands, with status lights, guide posts and a glowing shaft that shows how far it travels.

Even the promo video at the top of this page was made by the AI from the real game. It rendered the game frame by frame in a browser, added the captions and composed the soundtrack in code.

## Play Marble Madness Remastered now

Marble Madness Remastered is free and runs in any modern browser on desktop, laptop, tablet and phone. Your stars, best times and unlocked courses are saved in your browser, so you can come back and improve your score at any time.

More levels are on the way. Try the six courses now and see how many stars you can collect.

Play now: https://big-apple.tv/marble-madness/

## Frequently asked questions

### Is Marble Madness Remastered free?
Yes. It is free to play in your browser, with no download, no account and no ads in the game.

### Do I need to install anything?
No. The game runs directly in Chrome, Safari, Edge or Firefox. It needs an internet connection when it first loads, because it fetches its 3D engine online.

### Can I play it on my phone?
Yes. On phones and tablets you steer by dragging your finger anywhere on the screen.

### Who made Marble Madness Remastered?
The game was written in one shot by Claude Opus 5.5, an AI model made by Anthropic, and is published on Big-Apple.tv.

### How many levels are there?
There are six courses right now: First Roll, Sunset Cascade, Acid Works, Sky Islands, Funhouse and The Gauntlet. More levels are coming.

### Can two people play together?
Yes. The two-player race mode puts both marbles on the same screen. Player one uses the arrow keys or the mouse, player two uses WASD.

—
Marble Madness is a trademark of its respective owner. Marble Madness Remastered is an unofficial, non-commercial fan tribute to the 1984 arcade game and is not affiliated with or endorsed by the rights holders.