15 Puzzle - Fifteen Game Chall

15 puzzle is a simple sliding game. Your goal is to arrange tiles in ascending order (left-to-right, top-to-bottom) by moving puzzle pieces. It's a good way to train your brain, memory, and attention a little. Challenge your logic and brainpower, have fun and enjoy it! FEATURES • 100% solvable combinations; • Simple and convenient interface; • Five game levels (from 3x3, 4x4, 5x5, 6x6 and 7x7); • Game timer and saving the best result; • Simple & intuitive slide puzzle gameplay • Beautiful animation and tiles sliding; • Optimized for smartphones and tablets.