Where does the charm of subway lie? Maybe in that chill of mystery that surrounds the pitch-black underground world? Or maybe it's childish curiosity that makes us wonder about the magic behind the movement of trains? Who knows! But whatever it is, this particular racing game where you get to drive an underground locomotive has proved to be especially popular and currently ranks 5th among our iOS games. Check Subway Simulator 3D out and see for yourself what makes it so delightfully addicting!