This game looks great. Here’s a review of it.
What makes the iOS version of Mini Metro special is how you interact with it. The premise of the game is simple. You are in charge of building a transit system for your citizens. Mini Metro starts by tasking you with building London’s Tube from a few initial train stops that you connect with rail lines by dragging your finger between them. It’s the direct manipulation of the transit system — building parts up and tearing others down — that makes Mini Metro so engrossing.
Here’s some screenshots of my last three games.