In 1997, Six Flags took one of the riskiest moves in theme park history with their attempt to open four prototype launching roller coasters at the same time. This included the two tracks of Batman and Robin: The Chiller at Six Flags Great Adventure, Mr. Freeze at Six Flags Over Texas, and Mr. Freeze at Six Flags St. Louis. Find out just how big of a disaster this was, and why Batman and Robin: The Chiller unfortunately closed after less than a decade of operations.