Ever want to design your own roller coaster? This kit is just the thing! The fun set includes over 300 parts you can arrange to build a working model that can be used by itself or with any O/O-27 layout. Cars feature Delrin plastic parts and machined brass wheels for fast running. The track and supports are easy to put together and a full range of extra parts is included. No batteries required. To help with your design, there's a copy of top-selling "Roller Coaster Tycoon" PC software. Let your imagine run wild!