It starts out easy with unlimited resources but soon starts limiting you in interesting ways. You won't have enough road sections so you'll have to build a jump instead. Or you won't have enough material to make a bridge that goes up and over an income ship so you'll have to make a draw bridge with working hydraulics.
It's been a really fun game to jump into for a few minutes at a time. I think my average play session is ten to fifteen minutes, but I find myself coming back to it fairly regularly.
I think most people who have fun building things would enjoy this game. I grabbed it on sale on Steam for less than $10 and you probably should too. We all know, there's always another Steam sale right around the corner.