Sokoban

Sokoban is an adaptation of the eponymous puzzle game, where the player must push all crates in the level onto special target tiles, but is unable to pull crates away or push more than one crate at once. The player character can be controlled with the keyboard (moving one tile at a time), or the mouse (by clicking the player can command the character to move to a specific spot, or to push a neighboring crate to a specified tile.) The game keeps track of high scores (completing the level with a minimum number of moves or pushes.)

Later versions of the game include advanced features such a level editor, importing custom levels from the internet, the ability to compare high scores with other players online, multiple skins (and a skin editor), or undoing an unlimited number of the player's moves.