A gaming system comprises a wager input device and a display for displaying a first matrix of symbols representing a randomly selected outcome of the wagering game, the symbols selected from a plurality of symbols including at least one special symbol. The system further includes a controller operative to (i) collect occurrences of the at least one special symbol in the first matrix, (ii) vary the symbols to create a final matrix of symbols, (iii) redeem the collected special symbols by placing the collected special symbols into the final matrix, and (iv) provide an award if the final matrix of symbols indicates a winning combination.