About Pin Cracker GamePin Cracker is a timed game of mastermind, where you have to guess the 4-digit pin code. In this game each of the 10 numbers can only appear in one spot. If a number is yellow that means it was in the code but in a different spot. If a number is green that means it is in the correct spot. Gray numbers are not in the puzzle. Your prior guesses are shown to the right and the timing meter is to the far right. As you solve puzzles correctly the timing meter moves faster, making the game harder the longer you play. This is a JavaScript web application which uses cross-platform mobile-friendly HTML. All modern web browsers like Microsoft Edge, Apple Safari, Google Chrome, Mozilla Firefox and Opera should support it. This game works on just about any type of computing device including Microsoft Windows desktop computers, Apple OSX Mac computers, iOS powered tablets and phones like the iPad and iPhone, laptops like the Google Chromebook, and the many types of mobile phones from manufacturers like Samsung which are powered by Google Android.