Flagged! is an interesting general knowledge game for children aged 5-8 yrs based on question/answer methodology.
A set of Questions/Answers related to Country and their Capitals is stored within the application.
Yahoo! YQL API is used to fetch the flag images and the current news for the respective country.
Most importantly, speech recognition and voice synthesis have been extensively used keeping Accessibility in mind with both keyboard and speech based input/output for audible questions, instructions and news.
Technologies : YQL, Yahoo! News, Yahoo! Images, Visual C#, WPF, Windows 7 Speech Recognition and Voice Synthesis API