The simulators consist of route and session editors called Surveyor, and a Driver module that loads a route and lets the player operate and watch the trains run in either 'DCC' mode, which simulates a bare-bones Digital Command Control (DCC) system for the simple stop-and-go of a basic model railway, or 'CAB' mode, which simulates real-world physics and adds working cab controls. The Australian studio Auran (since 2007 N3V Games) released the first game in 2001. Trainz is a series of 3D train simulator video games. Box art for 32 bit Trainz Simulator 12 depicting a Norfolk and Western Y6b
