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News & Rumors


Vallejo, California
Six Flags Theme Parks




icon_STOPPark News - (6/17/21) Six Flags Discovery Kingdom has confirmed that as of June 15th the park is no longer requiring masks for fully vaccinated guests. They are also no longer taking temperature screenings before entry, and out of state visitors are now allowed to visit the park. Reservations however are STILL REQUIRED at this time.

    (6/7/21) A reader set up a great photo update showing off the latest changes to Six Flags Discovery Kingdom. The good news is that it looks like the plans to build the Sidewinder Safari coaster are still on, as the parts for the new coaster have been spotted in the parking lot. A nearby ad for the ride now says it is coming in 2022. Follow the link to see an aerial picture of the parts, as well as a current look at the cleared site for the new coaster, and pictures of where the park opted to remove their Skycoaster ride. They also posted a copy of the new park map which shows Harley Quinn as being removed along with the Skycoaster and the Tasmanian Devil ride.
    (4/26/21) I'm told that the Harley Quinn crazy coaster at Six Flags Discovery Kingdom has been removed from the park’s website and app.  Given the amount of trouble the park has had with the ride it seems that it has been chosen to be removed from service. At this point I am not sure if Six Flags is choosing to sell it or if they have simply chosen to scrap it.
    (4/3/21) Some of California’s first theme parks have finally been able to reopen with rides to guests once again. The local news posted a fun aerial photo fly-by of Six Flags Discovery Kingdom as guests began to flow back into the theme park.

    (3/21/21) Sad news for Six Flags Discovery Kingdom. In December the park had just announced the arrival of two new Walruses: Pakak (male) and UqUq (female). Unfortunately it has now been confirmed that Pakak passed away on March 4th. “It is with a heavy heart that the park shares the passing of Pakak, the male walrus, who had been under the park’s care since December”. The results of the necropsy to determine the cause of death is pending, but it was added that the sudden death was unexpected and the staff was unable to save him.
    On a lighter note, it was also confirmed that Six Flags Discovery Kingdom will reopen their rides as with more normal operations starting on April 1st. Remember that only California Residents are allowed to visit the park at this time and reservations are required.


icon_STOP2022 - Sidewinder Safari - (6/7/21) Pieces for the new coaster have arrived on site and were spotted sitting in the parking lot. New signs in the park promote the coaster as coming in 2022.
    (2/27/21) In a press release from the Six Flags corporate office that covers what every park is doing for 2021, there was no mention at all of the previously announced Sidewinder Safari coaster. So either it is delayed even further, or there is always the possibility that it could have been canceled outright.
    (7/5/20) NorCal Thrills has posted an excellent trip report showing off what The Marine World Experience is really like at Six Flags Discovery Kingdom. Meanwhile they also took a look at the future site of the Sidewinder Safari coaster, noting that the park is still full of posters claiming the new coaster is still coming in 2020. While there was no active construction to be seen, other than the previous site clearing, perhaps they are hoping to have it ready by the end of 2020 as an extra attraction for the park’s winter activities.
    (4/10/20) As Six Flags is now looking to cut 2020 capital budget to save money, one rumored victim is thought to be the Sidewinder Safari spinning coaster. The previous webpage for the project is now missing from the site, and two weeks prior to the chainwide closure, the park had posted a time-lapse video from the construction site, revealing that the only thing that really has taken place so far was clearing and ground work, so this would be an easy project to put on hold.  Can anyone confirm this?
    (2/29/20) Six Flags Discovery Kingdom has posted a time-lapse time-lapse construction video of the site clearing taking place for Sidewinder Safari. Based on the video the structure in the background that has the roof taken off as the video progresses is the former load/unload structure for the park’s former Elephant Rides attraction that was closed way back in 2016, so it looks like the new coaster will be located here.

    (8/29/19) Six Flags Discovery Kingdom will mix a new animal encounter with a family roller coaster adventure in 2020 when they add Sidewinder Safari, a new spinning mouse style coaster ride. But before you ride, you’ll encounter live snakes and other reptiles as you pass through the queue. Sidewinder Safari will be the park’s 12th roller coaster.




Track Record

Six Flags Discovery Kingdom
Vallejo, California
Six Flags Theme Parks

Tickets: as of 1/10/14
Adults: $62.99
Child (under 48”): $42.99
Ages 2 & Under Free
Parking: $20

Abbreviation: SFDK
Formerly known as Six Flags Marine World (SFMW) and Marine World Africa USA.


Newest Developments
2019 - Batman: The Ride

2018 - Harley Quinn Crazy Coaster

2017 - Wonder Woman Lasso of Truth

2016 - Pacific Rim 4D and
The Joker

2015 - Dare Devil Chaos Coaster

2014 - Tsunami Soaker

2012 - Superman: Ultimate Flight

2011 - Sky Screamer



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