A gaming machine for conducting a wagering game includes a primary display and a secondary display. A transmissive display is positioned in front of the primary display directly in the player's line of sight. The transmissive display is operable to selectively display transparent, translucent and opaque video images over the primary display. The transparent, translucent and opaque video images may be used to change, for example, a play mechanic associated with the wagering game and any reel symbols associated with wagering game. The transmissive display may also be used to provide interactive player control and player selection elements for the wagering game and to facilitate player inputs to the gaming machine. Where the gaming machine includes a bonus game, the transmissive display may be further used to provide bonus features associated with the gaming machine. In some embodiments, the transmissive display may also be positioned over the secondary display.