Mouse click or use WASD , numpad 8462 or arrow keys to move tiles. Keybard controls can be inverted from menu on the left (A or B mode).
The goal is to complete the game within minimal number of moves which is equal to current level.
There is a hint which shows minimal numbers of moves left to solve the puzzle from its current state, so you can check your progress.
Progress is saved (or at least tries to) after each level, the hardest puzzle takes 31 moves to solve.
It's my first submissoin, hope you like it.
This classical puzzle was invented in 19th century. The object of the puzzle is to place the tiles in order (123,456,78) by making sliding moves that use the empty space.
P.S. In case of bugs/glithes - do not hesitate to PM me with as much detail about them as you can.
Sounds are courtesy of freesound.org