WikiCuiz is a free Chrome add-on developed by Nikos V. that offers a unique way to test your knowledge while browsing Wikipedia. With this add-on, you can challenge yourself to select the most relevant Wikipedia category for a given article before time runs out.

To activate the WikiCuiz extension, simply open a Wikipedia article. The add-on will then analyze the page and generate quizzes based on the categories and category members related to the current article. These quizzes are designed to help you improve your understanding of Wikipedia's category structure and enhance your general knowledge.

It's important to note that WikiCuiz is not affiliated with or endorsed by the Wikimedia Foundation, although it is used with their permission. This add-on provides an enjoyable and educational experience for users who want to engage with Wikipedia in a more interactive way.