I spent a good part of my 20's learning about video game development because I always wanted to write a game. Sadly, the only working thing I produced in all of

I spent a good part of my 20's learning about video game development because I always wanted to write a game. Sadly, the only working thing I produced in all of that time was a UI system and a Tetris clone. I am in my 30's now and am grateful for having put the time in because I was able to apply many of those lessons to business software, which is how I make my living. That said, I still considering creating a puzzle game using Nim as a learning exercise and to make sure I "still got it". I recommend doing something like a Tetris clone because it has challenges, but is within the realm of the attainable even for someone with a short attention span such as myself.