The player can move each block left or right and when two or more identical blocks are brought together, they vanish. The goal is to eliminate all stones within a time limit.
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The levels are shown from the side with applied physics, i.e. blocks fall down if pushed from a ledge. There are also various special level elements, e.g. conveyor belts, elevators or weak structure elements which can only bear one block. Passwords are rewarded all five levels and a “help” function can be used twice per level.
It brings the level back to point zero without a game over, which is useful when the player navigated into an unwinnable situation. After earning a certain amount of points, the player receives a bomb which can be used to kill off a block of choice.