- Six Flags Over Texas (acquired by Cedar Fair who now owns the Six Flags trademark, now simply Six Flags)
- Six Flags Over Georgia (acquired by Herschend, now known as Austell Adventures)
- Six Flags St. Louis (acquired by Herschend, now known as Eureka Wood)
- Six Flags Great Adventure (acquired by Cedar Fair, now known as Jersey Adventure)
- Six Flags Magic Mountain (acquired by Cedar Fair, now known as Knott's Valencia)
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