Six Flags executives Kieran Burke and Gary Story would begin managing the properties as Premier Parks, LLC. In 2012 a new multi-million dollar water play structure was erected in a former parking lot. The area is called Wild West Water Works and features seven slides, a 1,000 gallon tipping water bucket and hundreds of water gadgets. In 2014, the park turned to Plainview, Texas-based Larson International for the new Winged Warrior ride and again in 2015 for the new Brain Drain, a seven-story looping thrill ride. Another new attraction was added in 2016 called The Gunslinger, a 60-foot-tall spinning thrill ride made by Italian ride manufacturer, Zamperla. It was relocated from Magic Spring in Hot Springs, Arkansas, a park also owned by CNL Lifestyle Properties, Inc. 2016 also celebrated the 25th anniversary of the Wildcat. Much of the ride was re-tracked in 2016 to make for a smoother ride. EPR Properties/Premier Parks era (2016–2018) After the 2016 season the park was again sold, this time to EPR Properties which was operating it under the name Frontier City Holdings LLC. Premier Parks continued as the management company, with Stephen Ball continuing to act as its general manager. For the 2017 season the Wildcat received a complete train makeover with rebuilt cars which includes new lap bars as well as a new color scheme of dark blue from its previous red. A new million dollar water ride was added to the Wild West Waterworks called the Gully Washer which consists of three high-thrill water slides that will start from a tower, approximately 66 feet tall. One of the new shows for the 2017 season performed in the Opera House is called "Shake, Rattle, and Roll", which replaced the show "Industrial Movement" and revisited the music of the 1950s and 1960s. EPR Properties/Six Flags era (2018–present) On May 22, 2018, Six Flags Entertainment Corporation announced that they had entered into a purchase agreement with Premier Parks to acquire the lease rights to operate the park, which would remain under EPR Properties ownership. Before the start of the 2020 season, Six Flags suspended all operations across all their properties due to the COVID-19 pandemic. After over two months of the park operations being closed, Frontier City became the first park in the company to reopen on June 5, with new health and safety protocols. As of June 2020, Frontier City operations have resumed. Special