Six Flags' Joker ride was shut down an hour after it opened
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The Joker (Six Flags Discovery Kingdom) - Wikipedia
The Joker coasters upend riders at Six Flags parks
Ride Review: The Joker (Six Flags Great Adventure) - The DoD3
Ride Review: The Joker (Six Flags Great Adventure) - The DoD3
The Joker Ride, don't recommend. - Picture of Jackson, New Jersey
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Joker - Six Flags Great Adventure (Jackson, New Jersey, United States)