In my non-technical (but still computer) time, my son and I started on a Microsoft game called Freelancer, as I'm keen to get him off of FPS and into games that involve more strategy and problem-solving. It's an interesting RPG, where you do have a bit more control over the story than you'd first expect.
As to strategy, I have to ask: Myst or Zork anyone? Note: the Zork link has free downloads of the first three text-based games (what is a grue, anyway?).