Orbital
You are locked in orbit; let go and you fly dead straight until the next planet’s gravity catches you. Release late and tight for a perfect and a rising multiplier, while a void climbs from below and never stops gaining.
Open the gameAside
Games
Small browser games, built outside of teaching and research. One is a revision aid for a probability course; the rest are only games.
New
Sudomathania
Sudoku and arithmetic, in three dimensionsA sudoku that does not lie flat. The board is a 4 × 4 × 4 cube, and every row, every column and every pillar of four cells must contain 1, 2, 3 and 4 exactly once. Three directions to satisfy at once instead of two.
Crossed over the top of that are arithmetic cages: small
outlined groups of cells that must hit a target under a given operation. A cage
marked 12× holds values that multiply to twelve; one marked
3− holds two that differ by three. The cages wrap around corners and
climb between layers, so the arithmetic is three-dimensional too.
Drag to rotate, click a cell, press 1–4. Plays on a phone or a keyboard.
How it is built
- The board
- A randomly generated Latin cube — sixty-four cells, forty-eight lines to satisfy.
- The cages
- Grown as connected regions through the cube, then given an operation their own values admit.
- The guarantee
- A solver counts the solutions before a puzzle is ever shown. It ships only if there is exactly one.
- The promise
- No guessing is ever required. Every puzzle yields to reasoning alone.
Also new
Powers of Ten
A game about scale · 26 orders of magnitudeYou are a single mote of dust, twenty-two micrometres across, and the camera is all the way in. Eat anything smaller, flee anything larger, and fill the bar.
When it fills, the world zooms out by an order of magnitude and you become the next thing up the ladder. Everything you spent the last ten seconds learning collapses to a speck — and it leaves a labelled ring behind, so by the end the field is littered with the worlds you outgrew. Each rung changes the physics under you, not just the picture.
Plays on a phone or a keyboard. No install, no account.
The ladder
- Mote
- 10−5 m — dust, shivering with Brownian motion
- Grain · Pebble
- Thick fluid gives way to something you can steer
- Asteroid
- 103 m — pure vacuum momentum, no drag at all
- Moon · Planet · Star
- Gravity arrives, and you learn to slingshot
- Black hole
- Your own pull starts dragging the hazards into your lap
- Galaxy
- 1021 m. And then it shows you what you crossed.
Built for a course
Acts of the Continuous
MATH 3200 · Exam 2A revision game in six acts, following the second-exam material of MATH 3200: continuous densities, the normal family, the gamma family and its relatives, moment generating functions, and joint distributions.
Each question carries a written explanation behind the answer, so a wrong choice is still worth reading. The acts unlock in order and keep a best score of their own, and a name entered at the end appears on a shared leaderboard.
The six acts
-
Act I
Foundations
Densities and CDFs, expectation, variance, linear transformations.
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Act II
The Bell
The normal distribution: standardise, look up, compare.
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Act III
The Gamma Dynasty
One family covering the exponential, chi-squared and Erlang.
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Act IV
Exp & Beta
Waiting times, chi-squared as a gamma in disguise, and the beta on the unit interval.
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Act V
The MGF Toolkit
Moment generating functions: sums of independent variables, linear transforms.
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Act VI
Two-Variable World
Joint densities, marginals, independence, covariance, conditionals.
For fun
Arcade games
Revenge of the Basco
A single-button run: press to stay airborne and thread the gaps between columns of fire. The longer the run lasts the less the columns hold still, and there are bosses waiting further in.
Open the gameSigma Strike
A statistics-themed space shooter. Clear each wave, chain hits for a combo multiplier, pick up weapon, shield and bomb upgrades, and meet a boss on every tenth wave.
Open the gameThese were built for the pleasure of building them, and they stay here for anyone who wants them. Nothing on this page is required for any course.
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