Ah, yeah a lot of my past projects went that way. Just spent 2 months getting a ping pong shader system to work so you can have map level fog of war with a vision cone. Easy for a computer shader but mobile doesn't have good support apparently.

Road system is an achievement though, might be able to spin just that and a little more into a little game, like mini metro etc?

Some days I'm amazed how much I can get done but it's cancelled out by things that I thought would be quick and take weeks!