I don't know, but this screenshot of Freital Hainsberg could point to the Weißeritz Valley Railway from Freital to Kipsdorf. The thunder cans that stand in the TSW in Freital are 100% identical to those that drive there in reality. The BR 99 would be the right locomotive. What do you think the first steam track was teased here? So I'm committed to this coming!
I‘m not familiar with the line but one thing that strikes is that the TSW2 coaches lack the branding present on the real ones in your pictures, which implies a lack of the required license. To save yourself from disappointment, I‘d take this as pure scenery for now, not a hint to a possible steam route.
Interesting Find and if DTG has the licence for it then it's the game 2nd narrow gauge track 75cm track gauge instead of 100cm track Arosa Line UK US Germany France 143.5 cm tracks
