Abstract: The present invention provides a variety of systems and methods of playing a slot machine game in which players accumulate elements during one or more spins and at the conclusion of any spin may record the accumulation of said elements for future use at the same or different slot machine game. In three preferred embodiments, a player accumulates: the cumulative number of times one or more predetermined symbols appear in the symbol matrix; the cumulative number of points awarded by the game for winning symbol combinations appearing in the symbol matrix; or a set of predetermined winning symbol combinations.

Abstract: The present invention provides methods for a player to become sequentially eligible for a bonus event based upon the appearance of predetermined symbols in designated locations of the symbol matrix during the play of one or more rounds of a slot machine game. In a preferred embodiment of the present invention, a specific predetermined symbol must appear in each of the columns comprising the symbol matrix during the play of one or more free spins of the slot machine game to initiate a bonus event.