Ninja, Steel roller coaster at Six Flags St. Louis in Eureka, Missouri.
Ninja is a steel roller coaster at Six Flags St. Louis in Eureka that twists through four inversions on its black track. The ride takes you through tight turns and rapid direction changes during its journey.
The ride debuted as Scream Machine at Expo 86 in Vancouver in 1986. It was relocated and reopened under its current name at Six Flags St. Louis in April 1989.
The design incorporates elements from Japanese martial arts traditions with its black track configuration and swift, precise movements through multiple inversions.
Visitors must meet a height requirement to ride, and it helps to wear comfortable shoes for the park. Coming early in the morning or later in the afternoon typically means shorter wait times.
A standout feature is the sidewinder element that delivers an extremely fast lateral turn. Riders also pass very close to the lift chain at one point, creating a thrilling near-miss moment.
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