What is a PRK file? A PRK file is a theme park design used by Thrillville or Thrillville: Off the Rails, video games in which players manage theme parks. It defines a theme park's layout, including the rides and games the park contains. Each theme park included in a Thrillville game uses its own PRK file.

More Information In the Thrillville series, players manage several theme parks, in which they design and place roller coasters and other attractions. Players unlock new theme parks by successfully managing their current park. These parks' initial layouts are saved as PRK files. Thrillville games use these files to load a park's default rides and attractions when the player unlocks that park. Players can then modify the park, by building new rides and attractions.