Arrange blocks into rows and columns of the same colour by moving the free block around and into the field.
Blocks are removed when a line is formed (row or column). Remove all blocks to complete a level.
If you are too slow or use too many moves a new line (row or column) will be added to the field.
There are three ways to move the free block to the desired position - touch, rotate or step.
Touch the arrow in the center of the field to move the block into the field and "shift" the colors one step in the direction of the arrow.
"Blockers" make it impossible to move into the field at the blocked row and column. Remove them by forming a line "around" it.
