15 puzzle

Classical 15 puzzle. It's a good way to train your brain, memory and attention a little. - Interface language: English Features: - simple and convenient interface; - five game levels (from 3x3 to 7x7); - three game modes (time, move, hidden); - game timer and saving the best result; - move counter; - uploading your pictures; - leaderboards (Google Play Game); - achievements (Google Play Game).