Patent ID: 8187081

Claim:
A gaming system comprising: a symbol selector arranged to select a plurality of symbols for display at a corresponding plurality of display positions; an outcome evaluator arranged to determine whether the selected symbols correspond to a winning symbol combination by evaluating symbols disposed in defined win lines; and a prize allocator arranged to allocate a prize to a player when a winning symbol combination exists in a defined win line; and wherein at least one display position is of different size to at least one other display position and the defined win lines are dependent on the respective sizes of and locations of the display positions; and wherein the gaming system is arranged to operate in normal game mode wherein display positions are the same size and the defined win lines are independent of the size and locations of the display positions, and special game mode wherein the display positions are of differing sizes and the defined win lines are dependent on the size and locations of the display positions; and wherein the gaming system comprises a display position modifier arranged during special game mode to replace at least one normal mode display position with a plurality of special game mode display positions, each special game mode display position being of smaller size that a normal mode display position.