A Google a Day VS AlltheTests

Trivia Crack - Produced by Etermax, Trivia Crack lets players answer trivia questions and compete against other people on mobile devices.

globalquiz.org - Difficult, multiplayer and multi-language trivia game.

QuizUp - QuizUp gives you the opportunity to test your trivia skills against friends and strangers throughout the world.

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.

Akinator - Akinator is an entertainment app that acts like a digital genie that can read your mind. The game will ask you a few questions about the character you have chosen, and it will attempt to guess the character from your provided answers.

HugeQuiz - test your knowledge with a variety of quizzes about everything.