Quizpoo lets you create, without requiring registration, “this or that” quizzes.
I had never actually heard of that “genre” of tests before, but you can see plenty of examples on their site. I could see students having a lot of fun making these kinds of tests. For example, as we study Latin America in my ELL Geography class, they could make one on “Mexico or Brazil” with the first “question” being “Brasilia” and the answer choices being “Mexico” or “Brazil.” The following “questions” could include “Pele” and “Baja California.”
Students in my English class could make grammar ones like “Plural or Singular,” etc.
I’m adding it to The Best Ways To Create Online Tests.