If you're not afraid of Microsoft I recommend Kodu http://research.microsoft.com/en-us/projects/kodu/ http://research.microsoft.com/en-us/projects/kodu/ My kids

If you're not afraid of Microsoft I recommend Kodu http://research.microsoft.com/en-us/projects/kodu/ http://research.microsoft.com/en-us/projects/kodu/ My kids literally beg me to be allowed to program with Kodu. It's very visual and very X-Box friendly.