15Slide is a PC slide-puzzle game. It's an improved variant of the well-known 15 puzzle. To solve the puzzle you have to genuine order of randomly shuffled numbered pieces in the least moves possiblen by sliding pieces into the empty spot. 15Slide differs from the genuine puzzle of 15: except standard board size, it proposes number game boards from 4x4 up to 10x10 size and 3 levels of difficulty.