Gaming Machine and Game Having Bonusing Slot Symbols Based on Mapped Locations

A gaming machine and method is disclosed that includes an electronic display, a player input system, a processor in communication with memory configured to store code. The code is configured to accept a wager from a player, initiate the wagering game play, define a trigger symbol, generate and display random symbols arranged in a first array of symbols, determine if a trigger symbol is present in the first array, if a trigger symbol is present in the first array, identify a location of all trigger symbols in the first array and designate the locations as mapped locations, generate a second array of symbols, designating symbols in the second array that are located at the mapped locations as predefined symbols, evaluate the second array for winning outcomes; and providing a monetary award to the player for a winning outcome.