Cyclops, and changed its name to Big Chief Karts & Coasters. Another roller coaster, Pegasus, was added the following year and Zeus opened in 1997. The park acquired Crazy King Ludwig's Adventure Park, which featured its own go-kart track, in 1999. This purchase brought Big Chief's to a total area of 107 acres. Mt. Olympus Water and Theme Park Big Chief Karts and Coasters was renamed to Big Chief's Mt. Olympus Theme Park in 2004 and the park expanded its Greco-Roman theming. Later that year, Mt. Olympus entered into a partnership with the Mattei family, owners of the nearby Treasure Island Resort. This partnership merged Treasure Island's outdoor Family Land Waterpark and the Bay of Dreams indoor water park with the Mt. Olympus theme park, creating a co-owned complex known as the Mt. Olympus Water and Theme Park. These two parks were not physically connected at the time of the merger because the Playday Motel separated them, leading Mt. Olympus to purchase the Playday Motel and demolish it. The park opened their largest roller coaster, Hades, for the 2005 season. Hades is a wooden roller coaster which became notable for its unusually steep drops and angles, and received the inaugural Golden Ticket Award for Best New Ride from Amusement Today magazine. In 2006, Mt. Olympus introduced the Parthenon Indoor Theme Park, a 43,000 sq ft building containing several amusement rides, including a spinning wild Mouse roller coaster called Opa. dus acquired Treasure Island entirely from the Mattei family. The purchase also included Pleasant View Motel, which became "Mykonos Village", and the Captain's Quarters, a family-oriented hotel building which was sold to Bluegreen Resorts and now operates as "Bluegreen Odyssey Dells", attached to the Hotel Rome (formerly the Treasure Island Resort). With the acquisition from the Mattei family, Mt. Olympus added of real estate to their property, bringing the total area to . The Lost City of Atlantis, a three-acre outdoor water park area, opened in 2012. Atlantis features seven new slides from WhiteWater West, a monster dump bucket and a 120' geyser, built at a cost of $3.5 million. Hades received a major renovation in 2013, adding a 360-degree inversion and the coaster was renamed Hades 360. "The Manticore", a vertical swing ride, was added to the park in 2015. "The Great Pool of Delphi", a 27,000 square foot swimming pool containing 500,000 gallons of water, was added in 2016.