Master Key is the classic game of Mastermind where, to win, you must guess the correct sequence of colors. Master Key is set in front of a keyhole from which you can spy some images of girls in skimpy clothes. Master Key also offers the two-player mode in a challenge to the "last key". In this mode, the first who guesses the correct key to access, can view the photo of the opponent. Some options of play: 4 levels of difficulty (4-6-8-10 colors), customizable background image and possibility to insert the image of player, from camera. This game complies with Android Market Policies and Guidelines, so it do not contains explicity nudity. However it is a game recommended for adults.