Pepper's Ghost is an optical illusion display technology that creates holographic effects of ghostly apparitions in pinball machines. Originally implemented as a visual effect technique in the Winchester Mystery House pinball machine by Barrels of Fun, it uses a horizontal monitor shining light onto an angled acrylic plate to project ghost images onto glass elements within the playfield and backbox. The technique was also historically used in Pinball 2000 cabinets to superimpose CRT animation onto playfield glass, making it a vintage technology repurposed for modern pinball design.
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Display technology used in King of the Arcade; projection shoots down onto playfield surface
Optical illusion technique dating to possibly 1584, popularized in 1862, used in Disney Haunted Mansion; basis for Pinball 2000's mirror projection technology
Display technology used in original Pinball 2000 cabinets to superimpose CRT animation onto playfield glass
Optical hologram display technology used in Winchester Mystery House backbox; creates interactive spirit effects
Optical illusion technique used in Winchester; horizontal monitor shining down on acrylic plate at angle creating hologram effect
Optical illusion technique implemented in Winchester backbox display; creates holographic effect of ghosts integrated with house sculpt; allows ball to pass underneath while maintaining visual integration
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Visual effect feature on Winchester; exceeded expectations in person vs photos; contributed to striking visual impact
Optical illusion display integrated into Winchester's playfield; shows ghostly apparitions; projects onto glass within house sculpt