Last weekend my son asked me how trains worked, and I decided it would be fun for us to find out together. We sat down and I made a small train simulation showing him track switching in Switzerland. He enjoyed it so much we kept building and adding new ideas and assets until we ended up with Tiny Worlds, miniture set of games set around transit.

Anyways 10 hours later Dad has a new hobby and my son has moved on. So I'm sharing it here for fun and feedback.