Challenge Citadel

Anime

Quizzes about anime series, characters, story arcs, and Japanese animation culture.

Attack on Titan, Death Note, Demon Slayer, Dragon Ball Z, Fullmetal Alchemist: Brotherhood, Hunter x Hunter, JoJo's Bizarre Adventure, Jujutsu Kaisen, My Hero Academia, Naruto, One Piece

Games

Quizzes about video games, game lore, mechanics, and gaming culture.

Among Us, Apex Legends, Call of Duty, Counter-Strike (CS:GO / CS2), Dark Souls, Deepwoken, Elden Ring, Five Nights at Freddy’s, Fortnite, Genshin Impact, Grand Theft Auto V, League of Legends, Minecraft, Overwatch, Pokémon, Project Moon, Red Dead Redemption 2, Roblox, Super Mario (Franchise), The Elder Scrolls V: Skyrim, The Legend of Zelda, The Witcher 3: Wild Hunt, Valorant, World of Warcraft

History

Test your knowledge of world history, civilizations, and historical events.

Ancient Civilizations, Ancient Greece, Ancient Rome, Cold War, Medieval Europe, Modern History, Pacific War, Renaissance, Revolutions, The Age of Exploration, World War I, World War II

Manga

Quizzes about manga series, artists, story arcs, and Japanese comic culture.

Movies

From blockbusters to cult classics - test your knowledge of directors, actors, iconic quotes, and Oscar history.

Space Exploration

Explore the vastness of the universe with questions about spaceflight, planetary exploration, and humanity's greatest adventure beyond Earth. From the first Moon landing to Mars rovers and space stations test your knowledge of the missions, technology, and discoveries that have transformed our understanding of the cosmos. Dive into the history of NASA, ESA, and commercial spaceflight companies, and learn how robotic probes are pushing the boundaries of our solar system. Whether you're a casual stargazer or a true space enthusiast, there's a challenge here for every level.

Assorted Questions, History of Space Exploration, Launch Vehicles and Rocket Technology, Mars Missions and Rovers, Moon Missions and Lunar Exploration, Robotic Probes and Deep Space Missions, Satellites and Earth Observation, Space Agencies and Commercial Spaceflight, Space Stations and Crewed Spaceflight

Sports

The Sports category covers everything from iconic athletes and legendary teams to major tournaments and record-breaking performances. Questions range across football, basketball, tennis, motorsports, athletics, and many other disciplines from around the world. Test your knowledge of historic moments, rules of the game, rivalries, and unforgettable achievements. Whether you follow one sport closely or enjoy them all, this category challenges true fans and casual viewers alike.

Dutch Soccer, Fifa World Cup, Formula 1, Olympics Summer Games, Olympics Winter Games, Tennis Grand Slams