The computer picks a four colour code, and you have to guess it. Click add colour, then type in a colour (pink, green, purple, yellow, orange, or white) and press enter. After you type in four colours, it will tell you what you got correct. A red means a colour is correct and in the right place. A white means a colour it correct but in the wrong place, and a blank means a colour isn't in the correct code. Remember, the order of the reds and whites DOESN"T correspond to the order of your guess. After you guess a colour, you can click on it to change the colour to the one you want. Press space to see the low score. Have fun!
Mastermind is a board game that I have at my house, so I guess credit to Mordecai Meirowitz who made the game up. The code won't include any double colours, so don't guess any or it won't work. Tell me about any glitches, and I will try and fix them. I'm not sure if the cloud data works.