It's hard for me to believe, but my younger brother Alexander started college this year. He's studying computer programming, which is something that I know a little bit about. I thought that it might be fun for us to do a mini-hackathon together as learning experience for him, and a fun personal challenge for me. We would try our hardest to go from "nothing" to "app" over the course of a single day.

He loved the idea.

Alexander suggested that we could build a Simon clone game, which sounded perfect to me. Just enough complexity to be challenging while still being realistic for our timeframe. He arrived early on a Sunday, and we got right to work.

First we discussed what we'd like the app's features to be: