I designed and coordinated implementation of Zingo and Zingo Sight Words by ThinkFun as a license for the Leapfrog LeapPad2.  I also worked on the words lists for this game. After full development of this game on the Leapfrog platform, ThinkFun chose to abandom the platform in favor of producing the game themselves.

Here's the Zingo! game screen.

Here's the Zingo! Sight Words game screen.

Here's the menu screen and settings.

Here's a visual flow diagram showing screens. This was produced for LeapFrog's review process.