Math Professors Turn Minecraft Into a Pi Calculator

Two math professors just proved that one of the world's most popular video games can teach one of math's most mysterious numbers.

Molly Lynch of Hollins University and Michael Weselcouch of Roanoke College wanted to make mathematics exciting for young people. They turned to Minecraft, the blocky sandbox game played by millions worldwide, and discovered a surprisingly elegant way to calculate pi.

The challenge seemed impossible at first. Minecraft's world is made entirely of cubes, while pi requires perfect circles. But the professors found inspiration in a classic probability method called the darts technique.

Here's how it works in real life: imagine throwing darts randomly at a circular dartboard mounted on a square wall. If you throw enough darts, the ratio of hits inside the circle versus the total square gives you pi divided by four. Multiply by four, and you've approximated pi.

Lynch and Weselcouch recreated this inside Minecraft using an unlikely pair of helpers: slimes and zoglins. Slimes are creatures that move randomly around the game world, while zoglins are hostile mobs that kill slimes on sight.

The professors built a red circular structure with an 11-block radius, then surrounded it with blue blocks to form a square. They placed special collecting blocks called hoppers across the entire area to count slime deaths automatically.

When a slime died, it dropped items that the hoppers collected. The researchers simply divided the items collected inside the circle by the total items collected everywhere. That ratio, multiplied by four, gave them pi.

In their test run, 619 slimes met their doom. Of those, 508 died inside the circular area. The calculation yielded 3.28, which isn't perfectly accurate but demonstrates the concept beautifully.

Why This Inspires

This project shows that learning doesn't have to feel like work. By meeting students where they already are, in the games they love, teachers can unlock genuine curiosity about subjects that might otherwise seem intimidating.

The method also reveals something profound about mathematics itself. Even in a world made of blocks and corners, the elegant patterns of circles and pi still emerge through probability and creative thinking.

Lynch and Weselcouch published their findings in 2024, offering detailed instructions so anyone can try this at home. They created several other methods for calculating mathematical constants in Minecraft too, each designed to be accessible without complex programming knowledge.

Past Minecraft players have built working computers and even programmed Minecraft inside Minecraft, proving the game is "Turing complete." But those projects required translating thousands of computer instructions into game actions.

This pi calculator succeeds because it's simple. Any player familiar with basic Minecraft mechanics can understand how slimes, zoglins, and hoppers work together to approximate a fundamental constant of the universe.

The professors achieved their goal: they made mathematics approachable, visual, and genuinely fun.