Something or other, whatever!

You'll be shown five numbers, between 100 and 999. Try to guess what order the numbers will go in, from smallest to biggest.

Letters are positioned on a binary tree. How quickly can you visit every letter?

An implementation of Quanta Magazine's Hyperjumps game. There was some discussion on the Talking Maths in Public group about how difficult to understand Quanta's presentation is.

A multiplayer mathematical Guess Who? game. Made for the 24 hour maths game show.

The game board for Maths Blockbuster, part of the 24 Hour Maths Game Show

A Wordle clone where you have to guess a sequence from the Online Encyclopedia of Integer Sequences

A happy image occurred to me of the Befunge instruction pointer as a tractor, driving around a field.

A game about adding and subtracting prime numbers. You start at a random number, with a random target. Try to reach the target, by adding or removing any prime factor of your current number.

This is a pen-and-paper game I invented in secondary school. Twenty years later, I've made a digital version of it!

Find all the Draculas in a castle.

A puzzle game about shaking hands

A game about dividing up an island

A game where you're shown a Unicode character and have to work out its name

A memory game that is bigger than you'll ever be able to deal with

Game/puzzle to do with shuffling boxes

I think the gist of the game would be that in each round, everyone guesses a number, and at the end the closest guess to the average of everyone's guesses wins. It didn't really work.

A never ending series of sums, where the answer from the last question is part of the next question.

All you have to do is say whether each number is prime.

A clicker game where each click runs a program you've written. You get points for completing challenges, but each operation in your program costs points. It works OK, but I didn't have the motivation to finish it.

A game about drawing lines

Inspired by the newspaper puzzle my wife's grandma tests me with each time I visit.

a numbers-in-a-grid game

A ripoff of a word game

A cross between tic-tac-toe and Reversi, apparently.

Asteroids, played on the projective plane or the Klein bottle.

Code written in the Monkey language.