Mamba

Mamba is a steel roller coaster at the Worlds of Fun amusement park in Kansas City, Missouri. It is a hypercoaster manufactured by D.H. Morgan Manufacturing and designed by Steve Okamoto. The attraction was announced by Worlds of Fun on September 11, 1997, as a major addition to the park's Africa-themed area. Its first hill rises 205 feet, making the ride the tallest attraction at the park when it opened, and the coaster began public operation on April 18, 1998. The ride's design combines substantial height with a long, fast layout. Its principal elements include a 205-foot initial lift hill, a 184-foot second hill, a 580-degree helix, and five consecutive camelback hills. The track forms a continuous circuit rather than a shuttle configuration. Each of the three trains has six cars, with riders seated two across in three rows per car, for a nominal capacity of 36 riders per train. Mamba is classified as a hypercoaster, a category generally associated with coasters exceeding 200 feet in height or drop length. The attraction was built at a reported cost of more than $10 million. It has remained one of Worlds of Fun's signature thrill rides and, according to the referenced encyclopedia material, has held notable state and international ranking positions. As of 2026, it is tied with Steel Force at Dorney Park & Wildwater Kingdom as the ninth-longest steel coaster in the world. It is described as Missouri's tallest, fastest, and longest continuous-circuit coaster, although the shuttle coaster Mr. Freeze: Reverse Blast at Six Flags St. Louis exceeds it in height. The ride's visual identity changed in late 2024, when its track was repainted from red to green. In October 2025, the Missouri Division of Fire Safety conducted a spot inspection after complaints and media reports concerning seat-belt malfunctions. The investigation examined incidents reported on October 11 and October 12, including one in which passengers physically restrained another rider after a belt unlatched. Inspectors identified 18 worn buckles that were not functioning properly. Worlds of Fun replaced the affected buckles, and the ride reopened on October 30. The park stated that the primary lap-bar restraints had remained fully functional and characterized the seat belts as a redundant safety system. On the available material, Mamba remains an operating amusement-park attraction rather than a food brand or packaged-goods label.

Mamba was developed as a major expansion attraction for Worlds of Fun in Kansas City, Missouri. On September 11, 1997, the park announced plans for a new hypercoaster to be built by D.H. Morgan Manufacturing. The project was assigned to the Africa-themed section of the park and was designed by Steve Okamoto. Its planned 205-foot first hill made it the tallest ride at Worlds of Fun when announced and gave the attraction a prominent role in the park's thrill-ride portfolio. The completed coaster opened on April 18, 1998. Its layout uses a high first hill, a second 184-foot hill, a 580-degree helix, and five consecutive camelback hills. These elements create a ride focused on speed changes, elevation, and repeated airtime moments rather than inversions. Mamba operates with three trains, each consisting of six cars. The cars seat riders two across in three rows, giving each train a stated capacity of 36 riders. Mamba's height places it within the hypercoaster category, which is generally applied to steel coasters exceeding 200 feet in height or drop length. The attraction was reported to have cost more than $10 million to construct. Over time, it became one of Worlds of Fun's defining attractions and retained regional importance because of its combination of height, speed, length, and continuous-circuit configuration. Reference material identifies it as Missouri's tallest, fastest, and longest continuous-circuit coaster, while noting that the shuttle coaster Mr. Freeze: Reverse Blast at Six Flags St. Louis is taller. As of 2026, Mamba is also described as tied with Steel Force at Dorney Park & Wildwater Kingdom for ninth place among the world's longest steel coasters. The ride received a visual refurbishment in late 2024, when its track color changed from red to green. The most significant later operational event occurred in October 2025. Following public complaints and media reports about seat-belt malfunctions, the Missouri Division of Fire Safety carried out a spot inspection. Investigators reviewed an October 11 incident involving an unlatched belt and a similar report from October 12. They found 18 worn buckles that were not functioning properly. Worlds of Fun replaced those components, and Mamba reopened on October 30. The park stated that the primary lap-bar restraints had remained fully functional and that the belts were a secondary or redundant restraint system. The available reference material indicates that Mamba continues to operate at Worlds of Fun.

• 2025

  Safety inspection and reopening

  [1]Mamba (roller coaster)en.wikipedia.org

  A state inspection identified 18 worn seat-belt buckles. After replacement, the ride reopened on October 30.

• 2024

  Track color refurbishment

  [1]Mamba (roller coaster)en.wikipedia.org

  The track was repainted from red to green.

• 1998

  Public opening

  [1]Mamba (roller coaster)en.wikipedia.org

  Mamba opened to visitors on April 18, becoming the tallest ride at Worlds of Fun at the time.

• 1997

  Worlds of Fun announces Mamba

  [1]Mamba (roller coaster)en.wikipedia.org

  The park announced a new 205-foot hypercoaster for its Africa-themed area, to be manufactured by D.H. Morgan Manufacturing.

A major regional amusement-park thrill attraction positioned around height, speed, sustained airtime, and a long continuous circuit.

• Steel hypercoaster · 1998

  Mamba

  Mamba is a continuous-circuit steel hypercoaster at Worlds of Fun. Its layout includes a 205-foot first hill, a 184-foot second hill, a 580-degree helix, and five consecutive camelback hills. The ride uses three six-car trains, with two riders across in three rows per car and 36 riders per train. It is designed as a large-scale outdoor thrill attraction emphasizing height, speed, length, and repeated airtime elements.

• 2025

  Replace worn seat-belt bucklesOther

  Background

  A state inspection followed complaints and reports concerning seat belts that had unlatched or were not functioning properly.

  Action taken

  The park replaced 18 worn buckles identified during the inspection and kept the ride closed until repairs were completed.

  Aftermath

  Mamba reopened on October 30. The park said the primary lap-bar restraints had remained functional and that the belts were redundant safety restraints.

  Source

• 2024

  Repaint the ride trackOther

  Background

  The attraction received a visual refurbishment more than two decades after opening.

  Action taken

  Worlds of Fun changed the track color from red to green.

  Aftermath

  The ride continued operating with the updated appearance.

  Source

• 2025

  Missouri safety inspection follows Mamba restraint complaints[1]Mamba (roller coaster)en.wikipedia.org

  Regulation · Recall

  The Missouri Division of Fire Safety inspected Mamba after reports of seat-belt malfunctions. Inspectors found 18 worn buckles, which the park replaced before reopening the ride on October 30.

• 2024

  Mamba track repainted green[1]Mamba (roller coaster)en.wikipedia.org

  Other

  The coaster's track received a new green paint scheme, replacing its earlier red appearance.

• 1998

  Mamba opens at Worlds of Fun[1]Mamba (roller coaster)en.wikipedia.org

  Product launch

  The new steel hypercoaster opened to the public on April 18, 1998, becoming the tallest ride at Worlds of Fun at the time.

• 1997

  Worlds of Fun announces Mamba hypercoaster[1]Mamba (roller coaster)en.wikipedia.org

  Product launch

  Worlds of Fun announced that it would add a 205-foot hypercoaster manufactured by D.H. Morgan Manufacturing to the park's Africa section.

1. 1Mamba (roller coaster)en.wikipedia.org