Get it free for Android
Wiki Quiz, a quiz game which is powered by Wikipedia, is now available for Android.
The game was made on native Android tools, and was designed to be completely independent, as it will collect the required information on WIkipedia automatically, without the use of intermediate servers.
Did something similar. The question format I generate is different though, you are presented with a concept, and have multiple choice definitions for it.
It's available as a free (no-ads) app in the Play store: Play.google.com