Pretty neat, I couldn't tell what some of the sprites were supposed to be though!
Thanks for your comment!
The green sprites on the first 5 wagons are seats.
The sprites on the 4th wagon are supposed to be metal parts dangling in the air. The same goes for the 5th wagon.
The 6th wagon (I think?), the one with weird green shapes is supposed to be a cargo wagon, with small containers and TNT.
The 'ghost' wagon is supposed to be a fancy restaurant wagon.
The 11th wagon is the crew quarters, with undone bunk bends and a fire.
The engine/locomotive is supposed to have a flight of stairs and a lever to "stop" the train.