About Symmetry Challenge GameSymmetry Challenge is a timed pattern matching game. Tap on a square once to turn it black, tap again to turn it red, and tap again to clear its contents. Make the tiles on the left side mirror the pattern on the right. Avoid clicking on any of the tiles with a skull or you automatically lose. Each of the 35 levels contain 4 stages which must be completed before the timer runs out to advance to the next level. 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.