Patent attributes
A method may involve determining which slot symbols will be presented on a display system for an instance of a slot game. The symbols may include one or more mystery symbols and one or more trigger symbols. The method may involve controlling the display system to present first visual effects corresponding to the instance of the game. The first visual effects may include moving symbols and landing of the one or more mystery symbols and the one or more trigger symbols. The method may involve controlling the display system to present second visual effects corresponding to the one or more mystery symbols. The second visual effects may include a first revealed mystery symbol image corresponding to a first mystery symbol. The first revealed mystery symbol image and the trigger symbols, taken together, may correspond to a feature award. The method may involve presenting third visual effects corresponding to the feature.
