Mini Metro MAR 13 2014
Mini Metro is an upcoming game in the style of Sim City, except you're only building subway lines.
Mini Metro is an upcoming minimalistic subway layout game. Your small city starts with only three unconnected stations. Your task is to draw routes between the stations to connect them with subway lines. Everything but the line layout is handled automatically; trains run along the lines as quickly as they can, and the commuters decide which trains to board and where to make transfers.
However the city is constantly growing, along with the transport needs of its population. How long can you keep the subway system running before it grinds to a halt?
Oh man, this is great fun for transportation nerds. Site says it'll be out in "early 2014" for PC, Mac, Linux, iPad, and Android. You can play an early version on the site or d/l an alpha version for OS X, Windows, or Linux.
Update: A public transit planning consultant evaluates Mini Metro, which because of its simplicity, simulates the experience of transit network design quite well in some cases.
We have discovered the most realistic thing about Mini Metro: If you want to win, think of these "trains" as buses.
In real rail transit systems, you cannot simply abandon a rail line and build a new one -- certainly not just to handle an overcrowding problem. But to do well in Mini Metro you must revise the network repeatedly, and the last phase of the game you'll deploy lots of one-time-only temporary lines In fact, for best results, make sure you also have a spare tunnel, so that if you have to get a train quickly to a station on an island, you can build a temporary line to a destination across the water, deleting it after use.
To a rail engineer, all this is ridiculous, but to a transit network designer, it's the game's most realistic feature.
Build a subway line to run one train once, then tear it out? No, this is not how rail transit works, but it's very much how buses work, and it's good thing, too. That's why buses provide a much better sandbox for network design thinking. When you build powerful networks with buses, mistakes cost thousands rather than billions, so they're more likely to be repaired. Real-life transit networks do need to evolve, usually from radial beginnings to more gridlike structures.