Mindflex Duel Official Site
You can read many details and information about Mindflex Duel in their manufacturer site. Details like complete features, technical specification and etc.
http://mindflexgames.com/

Mindflex Duel on Wikipedia
In this wikipedia, you can browse the complete list of Mattel products including Mindflex Duel.
http://en.wikipedia.org/wiki/Mindflex

LeapPad Explorer
Check also theel LeapPad Explorer, product details, specification, and lowest price.
http://www.LeapPadExplorers.com