WOK is World of Knowledge. It combine Wikipedia with quizzes into the Knowledge Network WOK. WOK is the Gamification of Wikipedia. Or Facebook for Knowledge.
In mobile app WikiMaster every Wikipedia article have a quiz realated. For academic studies. Or for trivia fun.

All multiple choice questions are created by the community WOK so anyone can learn and check they actually learned anything by take a quiz.

WOK has developed 3 apps in the ecosystem of Knowledge Network WOK: WikiMaster, WikiFlip and Quiz King.

Behind the WOK project is the company WOKcraft, founded by Erik Bolinder.

https://wokcraft.com/