Dotrace — Free Online Racetrack Game

Dotrace is a free digital version of the classic Racetrack paper game. Place dots on a circuit to guide a ball using inertia and momentum. Complete each circuit in the minimum number of moves. Play instantly in your browser or install on Android — no download, no account required.

What is the Racetrack paper game?

Racetrack (also called "jeu de course papier" or "vector racing") is a classic pencil-and-paper game invented in the 1960s and popularized by Martin Gardner in Scientific American (January 1973). Players take turns moving a vehicle around a hand-drawn circuit on graph paper, using vector mechanics: each move must account for the previous direction and speed, simulating real inertia. The goal is to complete the circuit in the fewest moves while staying within the track boundaries. Dotrace brings this classic game to your browser with smooth physics and handcrafted circuits.

How to play Dotrace (Racetrack online)

Tap or click to place control dots on the circuit. The ball follows a smooth curved path through your dots, respecting inertia — if you are going fast, you cannot turn sharply. Each dot placed counts as one move. Complete the circuit in par or fewer moves to earn a perfect score. The fewer moves, the better.

Frequently Asked Questions

Is Dotrace based on the Racetrack paper game?

Yes. Dotrace is a digital adaptation of Racetrack, the classic vector-based paper racing game popularized by Martin Gardner in Scientific American in 1973. It replaces graph paper and pencil with smooth browser physics.

What is Dotrace?

Dotrace is a free online Racetrack game. You place control points on a racing circuit and a ball follows the path respecting inertia. Complete each circuit in the fewest moves possible to beat the par.

Is Dotrace free to play?

Yes, Dotrace is completely free with no account, no download, and no ads during gameplay.

Does Dotrace work on iPhone and iOS?

Yes, Dotrace works in Safari and all mobile browsers on iPhone and iPad.

Is there a Dotrace Android app?

Yes, Dotrace is available as a free Android app on the Google Play Store.

How is Dotrace different from the paper Racetrack game?

Instead of a grid with discrete steps, Dotrace uses smooth Catmull-Rom spline physics for a more fluid feel. You place dots anywhere on the circuit and the ball follows a natural curve, making it easier to pick up while keeping the core inertia challenge of the original game.

Who made Dotrace?

Dotrace is made by Casoual Games, an indie game studio at casoual.games.