Oh, King's Quest, how do I love thee? Let me count the ways! Yes, the plots are linear, and yes, the puzzles never change, but I have played all three of these games more than once. I can tell you that I have completed King's Quest VI no less than 20 times. Why? Quite honestly, replaying a King's Quest game (any KQ game) is like rereading your favorite book. You want to play again because the plot is so intriguing and you have fallen absolutely head-over-heels in love with the characters. The puzzles are fun, though at times frustrating. But the humor makes it worthwhile, too. I used to save the game, then die on purpose just to see what crazy message I would get. (My favorite comes from KQ I remake. If you fall down the well, you get the message "Well, well, well, water you going to do now?"). These games are refreshing and, for kids, they do wonders for problem solving skills. I would highly, highly recommend these games to anyone and everyone!!! Especially if you love a light-hearted, fun-filled adventure story!
When I had to get Windows Vista, I was depressed for the main reason that I could not play King's Quest anymore. Thanks, GOG, for bringing it back!