Belight Software was showing off one of the few games on the floor of Macworld 2013 last week. The company usually makes utility apps, but just recently released its first game, called Rails, available on the iPad right now. The game is kind of a personal project for the devs -- they were big fans of an old DOS game called Short Line Express, and decided to make a game like that for the iPad.
I found the game relatively similar to Matt Rix's game Trainyard, though it doesn't have that title's abstract feel. Instead, it's a little more straightforward -- you have a series