Mastermind

Mastermind is a classic code-breaking game.
The computer generates a code of 4 colors. It's your task to guess that code with a limited number of tries (here: 6). The small circles on the left show you how good that try was:
Black = you put the color in the right position.
White = you put the color in the wrong position but it is in the code.
Gray = the color is not within the code.

I created this scenario 2 years ago as a project for school. This is why I won't release the source code as it's mostly in German.