Trainz is a computer program that allows you to create your own Railway. It is being developed by the Australian developer "Auran". The game comes in 3 areas: Routes, Railyard and Scenarios. Routes Has 3 areas inside it: Surveyor; Where you Can Create and change Routes, Driver; Where you can drive along surveyor routes,and Routes; Where You Can See all the routes. Railyard is Where you can see all your trains. Scenarios Is Where You can earn points by doing missions. They are different versions, The Latest one being Trainz 12. They Work With Windows XP and Up And Mac OS 10.6.8 and Up.