It is a tool where you can create quizzes, but is based on a game and they could be indivually or in groups, just as the creator wants to do it. The students have to enter a PIN that the admin (teacher) is going to provide them.
It is free, and there are two ways of creating quizzes: TRUE or FALSE, and OPEN QUESTIONS.
Advantage
You can choose the questions or the quizz if you do not want to create your own.
Disadvantage
It only shows you two ways to create questions if you have a free acount.
Click HERE to see an example (Quizz)
Click HERE to go to the website
Moises' Blog 