Detour - Immersive audio walks, now in 17 cities
QuizUp - QuizUp gives you the opportunity to test your trivia skills against friends and strangers throughout the world.
Tales & Tours - The personal tour guide that fits in your pocket
A Google a Day - Online trivia game where you use Google's search to answer questions as fast as you can.
TripScout - Self-guided city tours from local experts
Trivia Crack Kingdoms - The amazing quiz game that lets you test your knowledge and challenge your friends to see who is the smartest. Developed by Etermax