In this game one person (the code maker) comes up with a four color code and the others (code finders) have to guess the code. The code maker provides hints to the code finders via colored feedback. Red feedback means the finders have the right color in the right place. White feedback means the finders have the right color in the wrong place. No feedback means the finders have the wrong color completely.
The finders are given anywhere from five to seven rounds to solve the code.