Patent ID: 8226466

Claim:
A method of gaming comprising: (a) selecting a plurality of symbols from a source symbol set to form a selected symbol set for display at a plurality of display positions, the source symbol set comprising at least one removable symbol and at least one designated symbol different to each removable symbol; and in response to a removal condition having been met, the removal condition including at least that the selected symbol set includes at least one designated symbol within the display positions; (b) removing at least one removable symbol from the source symbol set from which it was selected to form a modified source symbol set; (c) selecting at least one symbol from the modified source symbol set to form a modified selected symbol set; (d) determining whether to make an award based on the modified selected symbol set; and wherein the source symbol set comprises a plurality of symbol sets at least one of the symbol sets comprising at least one removable symbol and at least one of the symbols sets comprising at least one designated symbol, and the method comprises selecting at least one symbol from each of the plurality of symbol sets, and if a removable symbol is to be removed, removing the at least one removable symbol from at least the symbol set from which it was selected to form a modified plurality of symbol sets constituting the modified source symbol set and selecting at least one symbol from each of the modified plurality of symbol sets to form the modified selected symbol set.