Another is it worth it thread. I haven't been using them a whole lot, I still don't build encampments some games, but I did railroad my entire empire in my Egypt game to give me something to do while waiting for science victory. I had a large empire and lots of resources. I had to rush buy 4 engineers to get it done before the end of the game which is over 4000 gold, so clearly they weren't worth it in that particular game. But I had a large empire. I will say railroading is too slow if you can reach a planet outside our solar system before all your cities are connected by railroads. My gold per trade route did go up, not sure by how much. I figure if it's at least 5 gold times 10 trade routes (an average) that's 50 gold a turn and will take 21 or so turns to recoup the cost of 1 engineer (epic speed). But of course 1 engineer is too slow to railroad your entire empire. I find often with smaller empires I really can't spare the resources. The movement bonus should be higher as well in my opinion. Your thoughts on the usefulness of railroads?