US Patent 11854341 Gaming device having prize ladder populated with incrementable prize levels

A gaming device having a processor to control a display to display a set of prize levels having a bottom level, a variable level associated with a variable prize, and an intermediate level. In each of a plurality of game instances, the processor selects a plurality of symbols, control the display to display the selected symbols, determines whether the symbols displayed include increment symbols, upon the symbols displayed including the increment symbols, increments the variable prize by respective amounts of the increment symbols, evaluates symbols displayed for a winning combination, and the symbols displayed including the winning combination, increments from a current prize level to a different prize level in the set of prize levels provided the different prize level is not a top level. At an end of the plurality of game instances, the processor awards a current prize of the current prize level.