This is a great product for introducing the younger generation to gaming. Its rules are extremely simple--all PCs and NPCs boil down to four basic archetypes with just one mechanic to remember. The hand-drawn crayon maps and character tokens are a great element because the artwork resonates with the drawing ability of the target audience (though my 6-year-old prefers to play using the adults' miniatures). Encounter designs are simple enough to play without much thought, but allow tactical options to be discussed as the kids mature.
The best part, as with any entry level game, is that the kids will have fun. The bonus is that along with the creative play they will develop basic math skills, problem solving, and teamwork.