Didjest: The Unofficial Site for the console.
The Didj was Leapfrog's first system to be designed to connect to the computer to check on your kid's learning and playing. Released in 2008, it was discontinued two years later and replaced by the Leapfrog Explorer. Here is a website devoted to all things Didj.
Last updated: June 11, 2014
There was also a 16th game that came with the system: Jetpack Heroes.