Players build a virtual model railway layout in realistic scenes, helping people to plan their real-life layout(s). Fixed track parts, rolling stock, scenery, building, tree and hills similar to a real life model railway. Users can also control the trains once the virtual railway is built and planned, leading to some people to call it HVR a train simulator. Some advanced parts such as turntables are absent from the game, and all engines on the same track will all move at once, the same speed and direction, much like a real life DC model railway. Engines included in the first edition include the LNER Class A1/A3, the LNER Class A4, Smokey Joe and the Eurostar.
Source: Wikipedia, "Hornby Virtual Railway", available under the CC-BY-SA License.