Viper (Six Flags AstroWorld)
defunct roller coaster at Six Flags AstroWorld
Viper was a steel roller coaster located at Six Flags AstroWorld in Houston, Texas. Manufactured by Anton Schwarzkopf, the Looping Star model opened in 1989. It consisted of a single loop and was demolished with the closing of Six Flags AstroWorld on October 30, 2005. It had previously operated at Six Flags St. Louis (now named Mid America Adventure), where it was known as Jet Scream from 1981 to 1988.
An identical installation known as Silver Bullet still operates at Frontier City in Oklahoma City, Oklahoma. Its paint scheme is different and the tunnel on the Silver Bullet surrounds the final turn as opposed to the drop hill.
History
On April 4, 1981, Jet Scream officially opened at Six Flags St. Louis. It was the park's first roller coaster to go upside down.
“Viper (Six Flags AstroWorld)” enters the record as defunct roller coaster at Six Flags AstroWorld. Crown Archives preserves that source wording while asking what Viper, Flags and AstroWorld can confirm, complicate or overturn.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 27, 2026. The linked authority identifier is Q14711399. Authority coordinates are 29.676, -95.407. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1989, 2005, 1981 and 1988.
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This entry incorporates text from “Viper (Six Flags AstroWorld)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.