Which Boolean Operations Can You Practice in The Boolean Game?

Updated

The Boolean Game lets you practice four boolean operations: union, subtract, intersect, and difference. These are the same operations used in Adobe Illustrator, Sketch, Figma, and other vector editors, so the game works as a drill for the shape-combining logic you apply in real design tools.

The four operations and what each one does

Each operation takes two or more overlapping vector shapes and produces a different result based on how the shapes overlap.

Operation What it does Typical use
Union Merges all selected shapes into one combined shape Building a single silhouette from separate parts
Subtract Removes the overlapping area of one shape from another Cutting a hole or notch out of a shape
Intersect Keeps only the area where all shapes overlap Isolating a shared region
Difference Keeps the areas that do not overlap, removing the intersection Creating an outline or split effect

The exact edge behavior depends on the editor, but the underlying logic is the same across Illustrator, Sketch, and Figma.

How the game presents them

The Boolean Game organizes these operations into stages. Each stage gives you a target shape and a set of starting shapes, and you apply boolean operations until your result matches the target. The game tracks your progress and shows game stats, so you can see how you are doing across stages.

The interface exposes the four operations directly:

  • union
  • subtract
  • intersect
  • difference

You also get Undo, Start Over, and Play again controls, plus a Share stage option. That means you can experiment freely: try an operation, undo it, and try a different order without losing your place.

Why practicing here transfers to real editors

The operations map one-to-one onto the boolean tools in the editors named on the site. If you can predict the result of union, subtract, intersect, and difference in the game, you can predict it in Illustrator, Sketch, or Figma. The main difference is that desktop editors add options like pathfinder effects or non-destructive compound shapes, but the core four operations behave the same way.

A practical example: if you want a crescent moon, you draw two overlapping circles and apply subtract to remove the overlap from one circle. If you want the lens-shaped overlap instead, you apply intersect. The game gives you repeated reps at choosing the right operation for a target shape.

Settings that affect practice

The game includes a few settings worth knowing about:

  • Sound can be toggled on or off.
  • Animation speed can be set from 0.5× up to 2×, which helps if you want to watch how a shape transforms more slowly.
  • Game data can be reset to factory settings, which erases all progress as if you had never played. There is a confirmation step before this happens.

If you are using the game to learn rather than to compete, slowing the animation down makes it easier to see how each operation changes the shape.

Getting started

Open the site, pick a stage, and try each of the four operations on the shapes provided. Compare your result to the target, then use Undo or Start Over to try a different operation. The goal is to build the habit of asking which operation produces the overlap or removal you need before you reach for it in a real vector editor.