Here is a chance to play a version of the classic Countdown Game.

Given the products of diagonally opposite cells - can you complete this Sudoku?

A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.

Solve this Sudoku puzzle whose clues are in the form of sums of the numbers which should appear in diagonal opposite cells.

This pair of linked Sudokus matches letters with numbers and hides a seasonal greeting. Can you find it?

A Sudoku that uses transformations as supporting clues.

Four numbers on an intersection that need to be placed in the surrounding cells. That is all you need to know to solve this sudoku.

Play this game and see if you can figure out the computer's chosen number.

Two sudokus in one. Challenge yourself to make the necessary connections.

Two sudokus in one. Challenge yourself to make the necessary connections.

Here is a machine with four coloured lights. Can you develop a strategy to work out the rules controlling each light?

Factors and Multiples game for an adult and child. How can you make sure you win this game?

Have a go at this game which has been inspired by the Big Internet Math-Off 2019. Can you gain more columns of lily pads than your opponent?

Can you explain the strategy for winning this game with any target?

A game for 2 people. Take turns placing a counter on the star. You win when you have completed a line of 3 in your colour.

Got It game for an adult and child. How can you play so that you know you will always win?

A game for 2 players. Take turns to place a counter so that it occupies one of the lowest possible positions in the grid. The first player to complete a line of 4 wins.

This article, the second in the series, looks at some different types of games and the sort of mathematical thinking they can develop.

The computer starts with all the lights off, but then clicks 3, 4 or 5 times at random, leaving some lights on. Can you switch them off again?

This article for teachers describes several games, found on the site, all of which have a related structure that can be used to develop the skills of strategic planning.

Take turns to place a decimal number on the spiral. Can you get three consecutive numbers?

Can you beat the computer in the challenging strategy game?

A game for 2 players. Given an arrangement of matchsticks, players take it is turns to remove a matchstick, along with all of the matchsticks that touch it.

Can you spot the similarities between this game and other games you know? The aim is to choose 3 numbers that total 15.

A simple game for 2 players invented by John Conway. It is played on a 3x3 square board with 9 counters that are black on one side and white on the other.

There are nasty versions of this dice game but we'll start with the nice ones...

A simple game of patience which often comes out. Can you explain why?

Spiralling Decimals game for an adult and child. Can you get three decimals next to each other on the spiral before your partner?

Nim-7 game for an adult and child. Who will be the one to take the last counter?

An article for teachers and pupils that encourages you to look at the mathematical properties of similar games.

This article supplies teachers with information that may be useful in better understanding the nature of games and their role in teaching and learning mathematics.

Gillian Hatch analyses what goes on when mathematical games are used as a pedagogic device.

Everthing you have always wanted to do with dominoes! Some of these games are good for practising your mental calculation skills, and some are good for your reasoning skills.

A game for two people, who take turns to move the counters. The player to remove the last counter from the board wins.

A game for 2 players. Set out 16 counters in rows of 1,3,5 and 7. Players take turns to remove any number of counters from a row. The player left with the last counter looses.

Add or subtract the two numbers on the spinners and try to complete a row of three. Are there some numbers that are good to aim for?

A game in which players take it in turns to choose a number. Can you block your opponent?

Can you work out how to win this game of Nim? Does it matter if you go first or second?

A game for 2 players with similarities to NIM. Place one counter on each spot on the games board. Players take it is turns to remove 1 or 2 adjacent counters. The winner picks up the last counter.