Have a look at the 3 engines they presented. Only Krokodil is worht looking at, the Glaskast and Crampton are so "nude". I hope they redo it abit, cuz the Glaskast for instance has far more details.
PS: a small contest: how did the Glaskast deserve its name?
Tought it said not yett, but it will be an great challenge than, if trains have to pass mountains en so un just as in reality... It looks like a great game, but nothing like TTD