In 2003, Texas Tornado at Six Flags AstroWorld was moved to Six Flags Discovery Kingdom and some track modifications were made by Premier Rides. The most significant was increasing the elevation of the first two loops. The effect of this change would be reducing the Tornado's top speed and lowering the g-forces during the first two loops. It was assumed that the mild weather would enable the coaster to run better. It was then renamed Zonga.
Zonga then operated for two years at Marine World. Unfortunately, operation continued to be inconsistent. Zonga regularly opened about two hours after the park and had frequent breakdowns. The ride wasn't very attractive because of its location (in a distant corner and hidden behind Roar) and appearance. There have been many malfunctions, which eventually led to Six Flags again closing down the ride. There have also been many complaints about the ride being "bumpy".
The ride ran for much of the 2004 season but stood silent for the 2005 season and was removed at the beginning of the 2006 season, leaving a large empty concrete area at the front of the park. Zonga was disassembled and moved to the Discovery Kingdom parking lot where it sat throughout the 2006 season. The new coaster for 2008 - Tony Hawk's Big Spin, known as Pandemonium since 2011, erected on the pad that Zonga used to occupy. Since 2012, another new ride has been established on that space - Superman: Ultimate Flight.