I bought the Zoombini Mini 2 pack for my daughter, who is 6 years old, because she no longer found her Clifford and Starflyer games Clifford The Big Red Dog Thinking Adventures,StarFlyers Royal Jewel Rescue,StarFlyers Alien Space Chase challenging anymore. She played with the Zoombinis Logical Journey CD for the first time yesterday evening and was completely hooked. A few of the challenges (e.g. encounter with the Pizza Troll) were more difficult than others, but they were not off-putting nor too frustrating, and it wasn't long before she discovered how to apply logic and pattern recognition to overcome those difficulties. The game occasionally pauses now and then, but it could simply be due to my computer and not the software design. Fortunately I installed it on my Dell without any of the problems described by other buyers. Overall, the game is fun for younger kids, but I can see how older kids might find the game repetitive after a while. In any case, my 6-year-old enjoys the game very much. The first thing she said when she woke up this morning was that she couldn't wait to come home from school so she could continue to play her Zoombinis game. The 2nd CD, Mountain Rescue, is reportedly slightly more advanced, so I'll wait a few more weeks before introducing her to it.