I'm not a huge gamer, but there have been a few titles that have occupied hours of my time. And of my favorites, Cut the Rope is the most addictive. Essentially, it's a physics-based puzzles where the goal is to maneuver a piece of candy into the mouth of a cute monster named Om Nom. The levels get increasingly complex as you go along, but you can pick the strategy very quickly and play for as little or as long as you'd like. That makes it perfect for people with short gaming attention spans.