Train Sim World®: CSX Heavy Haul is an all-new First Person Simulator that brings to life the experience of operating powerful and heavy freight trains on one of America’s most stunning and famous railroads; Sand Patch Grade. Powered by Dovetail Games’ new SimuGraph® vehicle dynamics engine and Unreal Engine 4® technology, Train Sim World uses real-world data to accurately replicate the performance, sounds and feel of real trains.