Mini Metro is described as 'game about building the perfect subway system. Simply draw lines between stations and start your trains running, then keep your routes efficient by redrawing them as new stations open'. There are four alternatives to Mini Metro for a variety of platforms, including iPad, Mac, iPhone, Windows and Linux. The best alternative is OpenTTD, which is both free and Open Source. Other great apps like Mini Metro are Zen Bound 2 (Paid), Mini Motorways (Paid) and Traffix (Paid).
Mini Motorways is a game about drawing the roads that drive a growing city. Build a road network, one road at a time, to create a bustling metropolis. Redesign your city to keep the traffic flowing, and carefully manage upgrades to meet the changing demands.
Everybody hates traffic. Even when it is minimalist, like on Traffix. Now there is a way to control chaos and spread some peace to the streets. On Traffix you are the highway manager. Each city will deliver a different dose of stress and chaos.