There are now 15,000 individual questions in Yacapaca, compiled into just under 2,000 quizzes. That’s a huge resource teaching material! You probably would not know it is there, though, because much of it is hidden away in authoring groups which you have to join before you can use it.
So, to give you an idea of the astonishing variety available, we have pulled together some of the more complete offerings around just one topic: spreadsheets, and pulled them into a single category under “Set Tests”. See it here (requires login).
If spreadsheets aren’t your thing, read on. There are 139 public authoring groups in Yacapaca, with every (I think) curriculum subject covered. If they don’t contain the quizzes you want now, it is an easy matter to compile your own. Try a search on your subject or topic here and astonish yourself with how much is now available to use with your students.