I Know It - "I Know It" is an online game for practicing primary-level math concepts.
globalquiz.org - Difficult, multiplayer and multi-language trivia game.
GCompris - Educational Game for Children 2 to 10 years old.
The Quizopedia - The Quizopedia is a top-notch quiz-based application that provides the overall development of the interesting candidates by offering interesting quizzes focused on enhancing analytical, reasoning, and decision-making skills.
Math Games - Math Games is a website which kids in Preschool through 8th grade can practice math.
JetPunk - JetPunk is the biggest online quiz platform that contains sports, geography, music, movies, and more regional or international information and database, created by H Brothers Inc.