Nine Men's Morris is a traditional strategy board game dating back to Roman times. It has very simple rules, taking only a minute to learn, but a surprising depth of play stems from them making it a fun mental work-out every time you play. The 3D interface and challenging level of game play from the computer combine to make this version of the game addictive to puzzle and game board lovers of all ages. The free version of the game is fully functional but only has one level of difficulty, slightly below that of the easiest level in the paid version. If you enjoy playing the free version upgrading to the paid version gives you three levels of greater difficulty and a configurable appearance as well. Requires Android 3+ Play store: https://play.google.com/store/apps/details?id=co.uk.abware.millsfree Amazon: http://www.amazon.co.uk/Free-3D-Nine-Mens-Morris/dp/B00G3IOF2M