While Six Flags St. Louis has rarely added major coasters that are unique to the park (The Boss), Six Flags St. Louis has had several flat rides that are hard to find in other parks.
Rush Street Flyer is one of the first unique flat rides that calls Six Flags St. Louis home. As a kid, I will not forget the extra room in the seat that allowed me to slide around. Additionally, it is hard to beat the view without riding one of the bigger rides that aren't the best for those who are scared of heights such as Sky Screamer or Superman Tower of Power.