Code Breaker is a computer version of the board game Mastermind. The computer thinks of a code and the player must try to guess it. After each guess the number of correct symbols and correct symbols in the correct location is made known, giving clues for the player to induce the actual code. There are 16 different game variants for one or two players, using four-digit codes. Depending on the game variation codes can consist of numbers and or symbols and a time limit can be present.