The game's first expansion from November 1999 had two titles for different markets: Corkscrew Follies in North America and Added Attractions internationally. The visuals were created by Simon Foster, while the theme music was composed by Allister Brimble. The code was written by Chris Sawyer himself in assembly language with just a small portion of the code interfacing to Windows and DirectX written by Fish UK. The game started development in September 1996, running on an evolution of the Transport Tycoon Deluxe engine, under the name White Knuckle. RollerCoaster Tycoon is an isometric amusement park building game released in March 1999 by Chris Sawyer.
