The tool provides a graphical interface to let you map out the various decision trees and narratives that you'll need in making such a game work with the Echo; it also contains a handful of templates to make it easier to get started. Those templates work for trivia games or ones with a decision tree, and you should be able to just plug in questions and edit the sample to get a simple game going without much fuss.

Amazon's blog post has plenty of more in-depth detail for interested developers. While these types of games are probably never going to be a major use case for Echo, Amazon has clearly shown over the last year or so that it wants to add a huge variety of features to capture the attention of buyers -- this one might do the trick if you want to distract your kids for a few minutes here and there.