The Microsoft Train Simulator 2001 PC CD-ROM Software is a game software designed for Windows operating systems such as Win 95, 98, ME, and 2000. With a minimum of 500 MB of hard drive space and 32 MB of RAM, this simulation allows users to experience train simulation in English language. The CD format ensures easy installation and usage, making it a great choice for train enthusiasts looking to experience the world of train simulation on their computers.