Get smarter just by playing?! This popular puzzle game is simple but addictive. The rules are simple! Just place the tiles in order by making sliding moves that use the empty space. On your commute to work or school or just to kill time, get in some easy brain training on your smart phone! Rules: • There are tiles with the numbers 1 through 15 written on them on the 4x4 board. • By only moving the tiles, line them up so that they are in numerical order starting from the upper-left. • When you are done, the bottom-right corner should be empty. Functions / Features: • Move multiple tiles at once. • Enjoy with animals, nature, and many other images. • Try over and over for the best time. Recommended if: • You like puzzle games • You want to improve your concentration and memory • You want to train your brain in a simple way • You are getting older and you feel that you can't think quite as fast as they used to • You are looking for a game to kill time on your commute to work or school This game can be readily enjoyed by all kinds of people from children to adults! 15 puzzle game is easy fun for people of all ages. Play it during your spare time to train your brain.