Browse quizzes

Football, tennis, F1, basketball, and more — test your knowledge of world records, legendary athletes, iconic moments, and sporting history.

From the Mona Lisa to Banksy — test your knowledge of iconic artworks, movements, artists, and the stories behind the world's most famous paintings and sculptures.

206 bones, 37 trillion cells, and countless surprises. Test your knowledge of human anatomy, biology, and the quirky science of being human.

Classic novels, literary movements, famous authors, and unforgettable characters. How well do you know the world's greatest books?

Who invented the telephone? What was discovered by accident? Test your knowledge of the greatest inventions and the brilliant (and lucky) minds behind them.

Planets, black holes, supernovas, and the missions that took us to the stars. Test your knowledge of space exploration and the universe.

From ancient instruments to modern genres — test your knowledge of music history, iconic albums, legendary artists, and the science of sound.

Intermediate-level Kotlin quiz covering language fundamentals, OOP, coroutines, functional programming, collections, Android, Spring backend, and Kotlin Multiplatform.

Comprehensive quiz covering Spring Data, Spring Data JPA, Hibernate ORM, entity mapping, transactions, query methods, caching, and performance tuning.

A comprehensive, language-agnostic quiz for experienced developers covering design patterns, SOLID principles, object-oriented design, clean code, refactoring, dependency management, testing practices, architectural trade-offs, and common software-design pitfalls. Focused on choosing and applying appropriate techniques rather than memorizing pattern names.

A comprehensive quiz on system design for senior developers. Covers scalability fundamentals, load balancing, caching strategies, database scaling, CAP theorem and consistency models, message queues and event-driven architecture, microservices, API design, authentication & authorization, and resilience patterns. Ideal for interview preparation and assessing distributed systems knowledge.

A comprehensive SQL quiz for experienced developers covering relational concepts, joins, aggregation, subqueries, common table expressions, window functions, constraints, transactions, indexing, query behavior, schema design, and performance fundamentals. Focused on broadly applicable SQL knowledge rather than a single database product.