I have a particular affinity for trains. My father and grandfather both worked on the railroad, presumably all the live-long day. When a train rolls by, I'll make a comment about the engine or trucks or what-have-you, and my girlfriend will madly clap her hands together and yell yay twains! in a dumb voice. I love her so much.
Anyway. ZAGG, the same people who make the unscratchable Invisible Shield films for various devices, released Trains, a game not unlike Flight Control, where you must route freight trains, drop off cargo, and avoid collisions.
Flight Control itself recently had an update, and now includes new tropical and aircraft carrier levels. Having lost hours of time to the original level, I was thrilled to have more places to land. (My high score is 103, by the way: Post yours in comments.)
Trains, on the other hand, takes the same approach, only with -- well -- trains. You must tap the switches to create a route for each train through the cargo depot of the appropriate color, and safely off the screen. You can let trains pass through without dropping their cargo, but you won't earn any points.
Of the two, I think I prefer Flight Control, only because there's more flexibility in determining where exactly the airplane goes by drawing a path with your finger. Switching train intersections accomplishes the same goal, but is somehow less satisfying than drawing a flight path freehand.
Trains, though, is good fun. It's on sale for 99 cents until June 15. After that it will be $1.99. Flight Control is also on sale for 99 cents "for a limited time." Both Trains and Flight Control are available from the App Store, and are well worth the money.