

It is highly complex, simulates PZB, LZB, CIR-ELKE, ETCS and is used for training real train drivers in a professional version of the sim. Zusi3 is the thing if you want real accurate operation of german trains and safety systems. Cons are it is only focused on US railroading and uses an older rendering engine, but the lighting and sound is very nice, and you can manipulate the world, add trains, in realtime without ever having to stop the simulation. It's the closest you can get to the real thing. Run8 V2 was developed by former MSTS addon developer 3DTrainStuff, and is widely accepted has having the most accurate physics, and offers a multiplayer mode that is quite impressive if you look at youtube videos. But let's see how it's developing in the future. Hell, you even get XP for climbing onto the loco. It's better for the new player, as it guides you through operations. And as Unreal Engine is not really made for a train sim which requires progressive loading of world tiles, the routes are shorter. But it suffers from the fact that as of now there is no editors available (correct me if I'm wrong), and the realism doesn't hold up to the good looks. And wonderful scenic routes from all over the world. And has, with certain Locos, the best Steam engine simulation. But its pro is definitely the moddability, scenario and route editor. Train Simulator, like its predecessor MSTS has a huge amount of available routes and rolling stock, although the DirectX 9.0 based engine clearly shows its age. And because of that I also play other sims, as each has its pros and cons.
