Start with any number of counters in any number of piles. 2 players take it in turns to remove any number of counters from a single pile. The winner is the player to take the last counter.

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

A game that tests your understanding of remainders.

Start with any number of counters in any number of piles. 2 players take it in turns to remove any number of counters from a single pile. The loser is the player who takes the last counter.

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.

This is an interactive net of a Rubik's cube. Twists of the 3D cube become mixes of the squares on the 2D net. Have a play and see how many scrambles you can undo!

To avoid losing think of another very well known game where the patterns of play are similar.

Can you beat the computer in the challenging strategy game?

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.

Dicey Operations for an adult and child. Can you get close to 1000 than your partner?

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

Some Games That May Be Nice or Nasty for an adult and child. Use your knowledge of place value to beat your oponent.

Square It game for an adult and child. Can you come up with a way of always winning this game?

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

Who said that adding, subtracting, multiplying and dividing couldn't be fun?

Help the bee to build a stack of blocks far enough to save his friend trapped in the tower.

A game for 2 or more people, based on the traditional card game Rummy. Players aim to make two `tricks', where each trick has to consist of a picture of a shape, a name that describes that shape, and. . . .

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

The aim of the game is to slide the green square from the top right hand corner to the bottom left hand corner in the least number of moves.

Match pairs of cards so that they have equivalent ratios.

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

Can you beat Piggy in this simple dice game? Can you figure out Piggy's strategy, and is there a better one?

Collect as many diamonds as you can by drawing three straight lines.

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

A game for 2 players. Can be played online. One player has 1 red counter, the other has 4 blue. The red counter needs to reach the other side, and the blue needs to trap the red.

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

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.

Practise your diamond mining skills and your x,y coordination in this homage to Pacman.

Basic strategy games are particularly suitable as starting points for investigations. Players instinctively try to discover a winning strategy, and usually the best way to do this is to analyse. . . .

A Sudoku based on clues that give the differences between adjacent cells.

Here is a solitaire type environment for you to experiment with. Which targets can you reach?

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

A game to make and play based on the number line.

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

A game for 1 person to play on screen. Practise your number bonds whilst improving your memory

A Sudoku with clues given as sums of entries.

A maths-based Football World Cup simulation for teachers and students to use.

First Connect Three game for an adult and child. Use the dice numbers and either addition or subtraction to get three numbers in a straight line.

Why not challenge a friend to play this transformation game?

This sudoku requires you to have "double vision" - two Sudoku's for the price of one

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

A game in which players take it in turns to turn up two cards. If they can draw a triangle which satisfies both properties they win the pair of cards. And a few challenging questions to follow...