Great idea marred by a couple of crucial bugs. 1) If you put two tiles down of the same type, tapping either changes both. 2) I spent a few minutes creating a vast network on my Pixel C including 29 icons, but was sad to see that the train fades out after only 12 stops. Full marks for the idea though!
Great idea. Brainicon did it again!
Does what it says. And it's a good time pass