I used Kodu with kids between 5-9 years on a summer camp, they caught up very quickly. The interface was pretty cool and straightforward, they loved being able

I used Kodu with kids between 5-9 years on a summer camp, they caught up very quickly. The interface was pretty cool and straightforward, they loved being able to modify the terrain. I always told them like: "Kodu is hungry and wants to eat some apples", or "can you help Kodu find X", etc. Kodu (the robot) became kind of a character/friend they empathized with, which eased having their attention and interest. Only downside I saw was its cpu and memory consumption.