Mini Metro Steam Key GLOBAL

Create a reliable public transportation system for a city that keeps on expanding in Mini Metro, a strategy simulation game developed by Dinosaur Polo Club.
Start off with three stations that you need to connect with subway lines, as the city grows, more stations appear, more people need to be transported, thus maximum efficiency is required. Can you pull off the complex system, or will you keep the people waiting, creating a chain of subway lines that is incapable of maintaining the daily commute?