I think this was one of the best logic games of the seventies
This game took me two days to put together; I hope you enjoy it as much as I did writing it.

Download Master Mind

How to play Foelock mastermind, first select easy game or not, then press new game button, you will get four blue coloured squares, click the squares to change colour when happy with choice, press the test button beside that line where you will receive the result, the idea of the game is to find the same colours the computer is hiding at the top of the game, to help you the computer will give one black marker for every colour in the right place and a white marker for every colour right but in the wrong place.

There are two levels of play easy, which has 6 colours making 1296 possible combinations and 12 colours making 20736 combinations. 
The game is free to use and distribute.

When you have guessed the right colours, they will be shown at the top of the game.