This is a project that I carried out with Year 6 pupils. Initially they had to design their world and we looked at the different characters in a Mario game and their behaviours (e.g. when they bump a flower, they can shoot bombs, etc.)
This was a project for pupils who had already had plenty of experience using Kodu. This meant that we could focus on some of the more complex programming concepts, e.g. variables for scoring and health and timers.
I used the two files below to create a booklet for pupils to plan their world, their characters and their code.