Music Quiz Duel is a mobile Quiz game I made while working at Mangoo Games.
It is a pseudo-sequel to Music Quiz but a lot more ambitious: Music Quiz Duel is a multiplayer game.
In the game, you play matches against random people (or Facebook friends) of 5 rounds. Each round is a music to guess, and the player gets a bigger score depending on how fast they find the answer.
There are leaderboards, a leveling system, and dynamic playlists that are added in the back end and players can buy.
The game makes heavy use of the Facebook graph APIs