The developers, 9Quiz, have created hundreds of different quizzes on many different themes, and when you download one of them, you in fact download the entire range.
At first I was a little annoyed about this because I wanted questions specifically on cartoons, but I soon realised that I was not missing out on anything; I was getting quizzes on cartoons (Classics, Disney, etc), and tons of other stuff on top of that.
My second surprise came when I found out that this was game designed to be played against other people online. I had hoped to be able play just against myself in order to test my own knowledge without competing against others, but that is not an option.
I do, however, like the aspect of having an opponent. The way it works is that you are given seven questions. For the first six questions, your score is based on how quickly to answer and who answers first. For the final question, you have to bet the points you have earned on how confident you are at getting the next question right. This can radically change the results. If you're behind, but your opponent bets big and gets the wrong answer, they'll lose lots of points, and you can end up winning the game.
At the end of the game, the amount you score not only determines who wins the game, but also helps towards your world ranking, and increases your experience points to bring you up to the next level.
There are lots of different achievements to aim for, which earn you badges. These start of as easy tasks, such as connecting to Facebook, losing three games, winning one game, playing five games, etc, but they get more challenging after that.
My main issue with the quizzes is that you are not given enough time to read the question. The question appears with a twelve second timer. After six seconds the multiple choice answers are revealed. A lot of the time I haven't even finished reading the question, let alone had a chance to look at the answers before moving on to the next round. The time should really be twenty - thirty seconds considering that some of the questions are quite long.
Whatever field of interest you have, whether it is art, music, television, sport, etc, this game will have a quiz to interest you. You just need to learn how to speed read.