This 3D puzzle looks just like the famous Rubik's Cube® but it is a complete different game. Not only can each layer of sub-cubes spin like a Rubik’s Cube®, each individual color tile on the sub-cubes can also slide across the face of the cube! Thus it creates thousands of new color patterns that cannot be created on Rubik’s Cube®! Go to Brain Teasers page(http://www.glidingcube.com/brain.htm) to see if you are up to the challenge! The Gliding Cube™ puzzle simulation software is the best 3D cube puzzle simulation software ever! Photorealistic is only one of its many features. It not only looks like a real cube, it plays like a real cube. Plus, it offers nice perks a physical cube does not have: two mirrors to help you see all sides, unlimited undo’s and redo’s, recording and playback of moves, saving and retrieving of patterns, solutions and games, and much more. The GlidingCube program offers free tries for up to five times.