The gameplay experience in Quizalize isn’t what makes it stand out. Like the others, you can create questions and answers and deliver them to your class. Like the others, there are existing games you can search and use. (Quizalize uses a marketplace model where you can offer your Quizalize games to others for a fee a la Teachers Pay Teachers.) Quizalize stands out with the data that it offers on how students are doing.
What makes it different: Data on student performance. Quizalize really excels here. You can create tags for questions (i.e. subtopics to distinguish questions from each other) and sort student results by subtopic. You can also see which subtopics and questions were hardest for students. Student results can also be sorted by “stronger,” “almost there” and “weaker”. If you want to use a game show-style game to generate student performance data and offer extra help to struggling students, Quizalize is the choice for you.