To put it simply, I hand drew the whole thing and then scanned it all in! Took about 2-3 years of (learning) programming, illustration and general R&D.
My kids love it!
"Waah stop the traain there is a station coming up!"
Hahaha that's so lovely! Awesome :)
Your work is really enjoyable, interesting, and unique.
:)
Please keep it up.