What was the first challenge you did?

My first was a Teen on the run. Teens couldn't live alone in previous games, so this was a very interesting consept for me. It was tough, he had to juggle school, making money to feed himself and his first aspiration. it took some time, but it was a lot of fun. Sadly, I have lost that save after I finished the challenge.

I'm most interested in challenges with very simple rules, ones I don't have to constantly look up. Rags2Riches, Teen on the run and Abandoned kids are 3 I've done.