Ah, cool. I had a little go at a pseudo 3D game for my first attempt at game-making. It ended up being a little too ambitious for me, so I have since abandoned it, but I hope I'll make another attempt when I'm a bit more experienced.
I came unstuck when it came to making roads split.... I kind of managed to do it, but it was pretty buggy lol. So if you want to extend your tutorial that's something that I'd like to see :).
I used these as my main starting points, not sure if you've seen them before: