Cube Composer
Chain functions to turn stacks of colored cubes into a target shape
Cube Composer is a puzzle game about functions. Each level shows you stacks of colored cubes and a goal. You pick functions from a list, such as one that turns every yellow cube red, and chain them together. The cubes pass through each function in order, and you win when the result matches the goal.
Free · No login · Browser · Beginner
About Cube Composer
The game is inspired by functional programming. It trains you to think of a program as a chain of small transformations, like map. Levels are grouped into chapters and rated easy, medium or hard. You do not type any code.
It runs free in the browser. David Peter wrote it in PureScript, and the source is on GitHub under the MIT license.
On Breakpoint since 23 Oct 2026.