Patent attributes
A processor of a gaming machine displays a game outcome on a display device and accumulates, among symbol meters displayed by the display device, bonus symbols awarded based on the game outcome. After accumulating the bonus symbols, the processor creates, based on input from a player interface, a request to substitute a first set of bonus symbols accumulated among the symbol meters for a second set of bonus symbols accumulated by another gaming machine, and sends the request to the another gaming machine. In response to receiving an acceptance of the request from the another gaming machine, the processor removes the first set of bonus symbols from the symbol meters of the gaming machine, and adds the second set of bonus symbols to the symbol meters of the gaming machine. The processor triggers an event in response to the symbol meters accumulating a winning set of bonus symbols.