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.