Quote from LloydHarmonica»
EDIT: I heard rumor that Rails of War isn't very good for survival. It seems to be more of a creative mod. Is this true? I'd like to keep most elements available in survival if at all possible.
It's quite playable in survival. All the trains, components, and rails are craftable in survival mode.
Again, just make sure you modify the recipes, so you don't need to mine iron for days.