Yesterday andrew ducker's links got me addicted to this little game. Each level is a screen with some roads coming in and some going out, and you need to join them up so the traffic can flow freely. Some connections need high traffic and need direct connections. Sometimes there's small or medium levels of traffic but lots of connections.
It's really cute how the separate screens join together to make a city with coast and mountains and houses and industrial areas. When you do all the levels in the initial 3x3 grid it expands to 5x5, then 7x7. And maybe further, I don't know.
I don't really understand the score, it clearly correlates with how good the network is, but I don't know exactly what contributes to it.
It makes some real-world motorway engineering make more sense. There's lots of situations where roundabouts work really well. Sometimes there's a couple of really busy routes which need direct connections, but then everything else just needs to be connected *at all* so you can use normal cross-roads with no flyovers at all.
Some things are bizarre. Who designed this city so SOME roads drive on the left and some on the right?
A few of the screens have a menu item to open an aerial picture of a real-world junction with similar connections and see if you came to the same sort of solution. One was a diamond interchange, with a moderate traffic road crossing a high traffic road. Another was two low-traffic roads crossing, in the middle of some fields somewhere.
There doesn't seem to be an "undo" button, am I missing something? That's realistic for working with concrete, but with the interface so clunky it would be really nice.
Edit: Also, there's a directory called save but I can't find any option to save which disinclines me to play again. Anyone know where it's hidden?