Open PRK File
A PRK extension file is a theme park layout created with Thrillville: Off the Rails.
Thrillville: Off the Rails is a theme park simulation video game developed by Frontier Developments and published by LucasArts.
In this case, the PRK file may contain simulations of roller coasters, attractions, and other games within the theme park.
Also the PRK works for customizations and therefore the game can be custom designed by the user using the "Build" function of the game.
Software to open a PRK file
There is only one software package enabled to open a file of PRK format and extension, namely: