| Countries of the Soviet Union | 0 | - | 4.98 | 195,254 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,927 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,287 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,904 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,900 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,016 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,832 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,011 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,368 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,401 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,193 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,422 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,661 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,152 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,022 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,756 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,886 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,223 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,857 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 862,992 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,161 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,746 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,086 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,878 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,632 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,243 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 359,013 |
| Cities in European History #1 | 0 | - | 4.63 | 134,315 |
| Flags of Countries That Border Russia | 0 | - | 4.70 | 83,601 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,735 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,340 |
| African Countries That Have Been to the FIFA World Cup | 0 | - | 4.89 | 58,796 |
| Champions League Winners | 0 | - | 4.92 | 1,011,253 |
| Europe Capital to Country | 0 | - | 4.99 | 251,219 |
| EU Capitals with No Hints | 0 | - | 4.96 | 146,425 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,897 |
| European Capitals by Map | 0 | - | 4.99 | 140,729 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,291 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,662 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,620 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,461 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,823 |
| European Coastal Capitals | 0 | - | 4.95 | 90,950 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 224,898 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,417 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,494 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,380 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,518 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,888 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,027 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,266 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,453 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,265 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,121 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,312 |
| Official Cities in the UK | 0 | - | 4.89 | 284,947 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,524 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,381 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,266 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,804 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,359 |
| Political Movements by Country | 0 | - | 4.46 | 72,656 |
| 2025–2026 Football League Teams | 0 | - | 4.94 | 403,283 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,283 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,712,832 |
| European Capitals by Airport Code | 0 | - | 4.93 | 36,517 |
| Every European Country Shape | 0 | - | 4.96 | 202,386 |
| Name a Valid European Capital | 0 | - | 4.95 | 152,998 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,555 |
| Random European Capital to Country | 0 | - | 4.98 | 191,635 |
| Random European Country to Capital | 0 | - | 4.93 | 165,518 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,602 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,450 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,874 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 51,947 |
| UK Immigration by Country | 0 | - | 4.94 | 141,273 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,381 |
| British Cities with the Most Tourists | 0 | - | 4.83 | 70,537 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.98 | 149,819 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,504 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,712 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,609 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 136,012 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,855 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,183 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,489 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,837 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,532 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,913 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 142,348 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,777 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,068 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,543 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,082 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,666 |
| Random European Flag to Country | 0 | - | 4.90 | 183,158 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,571 |
| Holy Roman Empire Countries | 0 | - | 4.77 | 54,861 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,545 |
| Countries Once Held by Sweden | 0 | - | 4.18 | 34,819 |
| Scotland A-Z | 0 | - | 4.73 | 41,364 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,194 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,966 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,087 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,334 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,645 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,614 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,287 |
| Hindu Countries | 0 | - | 4.86 | 50,366 |
| National Founders | 0 | - | 4.40 | 83,907 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,915 |
| Premier League Relegated Teams | 0 | - | 4.81 | 127,166 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,435 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,121 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,838 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,441 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,686 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,920 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,837 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,662 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,804 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,977 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,474 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 319,641 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,491 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,590 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,429 |
| All Countries that Once Bordered Germany | 0 | - | 4.34 | 75,062 |
| Countries of the German Empire | 0 | - | 4.51 | 38,068 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,495 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,248 |
| Which City In the United Kingdom? | 0 | - | 4.97 | 94,538 |
| British Places A-Z | 0 | - | 4.29 | 79,997 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,025 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 51,851 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,939 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 58,132 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,597 |
| Communist Countries in History | 0 | - | 4.63 | 496,950 |
| U.S. Cities with Teams from All Four Major Sports | 0 | - | 4.88 | 139,148 |
| MLB Baseball Teams Quiz | 0 | - | 4.91 | 892,415 |
| All Major North American Pro Sports Teams | 0 | - | 4.99 | 1,004,687 |
| All Teams to Ever Play a FIFA World Cup | 0 | - | 4.95 | 345,474 |
| FIFA World Cup Top 4 Positions | 0 | - | 4.96 | 464,275 |
| British Football Team Logos | 0 | - | 4.06 | 68,958 |
| Football Clubs in London | 0 | - | 4.34 | 129,814 |
| Champions League Top 4 | 0 | - | 4.77 | 137,678 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,281 |
| AFL Teams | 0 | - | 4.42 | 40,616 |
| Richest Metro Areas in the U.S. | 0 | - | 4.42 | 43,928 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,171 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,850 |
| Europe Map Quiz | 0 | - | 5.00 | 4,775,250 |
| Word Scramble - European Capitals | 0 | - | 4.70 | 94,346 |
| Most Forested European Countries | 0 | - | 4.80 | 75,505 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,674 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,652 |
| Word Scramble - U.K. Cities | 0 | - | 4.57 | 65,001 |
| UK Cities and Towns by Map | 0 | - | 4.48 | 46,602 |
| Cities in the United Kingdom by Proximity | 0 | - | 4.63 | 48,652 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,455 |
| Most-Visited Countries by the British | 0 | - | 4.64 | 68,828 |
| Boroughs of London | 0 | - | 4.63 | 88,225 |
| London Geography | 0 | - | 4.47 | 59,771 |
| Scotland Trivia | 0 | - | 4.58 | 57,685 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,519 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,953 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,972 |
| Top 10 Richest Countries in Asia | 0 | - | 4.74 | 105,939 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,551 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 101,084 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,897 |
| Countries by Sports in 60 Seconds | 0 | - | 4.92 | 146,657 |
| NFL Football by Year, 1967–1999 | 0 | - | 4.34 | 25,493 |
| NFL Football by Year, 2000–present | 0 | - | 4.26 | 28,144 |
| 2018 FIFA World Cup Results | 0 | - | 4.95 | 133,539 |
| NFL Football Teams Quiz | 0 | - | 4.98 | 2,295,804 |
| NFL Football Team Logos | 0 | - | 4.91 | 630,039 |
| NCAA Football Cities | 0 | - | 4.25 | 64,993 |
| NCAA Football Teams | 0 | - | 4.96 | 389,333 |
| NCAA FBS Football Teams on a Map | 0 | - | 4.92 | 108,884 |
| NBA Basketball Teams Quiz | 0 | - | 4.98 | 2,586,725 |
| NCAA Basketball Teams | 0 | - | 4.95 | 337,064 |
| NHL Hockey Teams Quiz | 0 | - | 4.90 | 654,802 |
| MLB Baseball by Year, 1960–1989 | 0 | - | 4.09 | 18,708 |
| MLB Baseball by Year, 1990–present | 0 | - | 4.02 | 15,048 |
| Olympic Host Countries | 0 | - | 4.98 | 201,316 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 144,782 |
| NHL Ice Hockey Team Logos | 0 | - | 4.89 | 189,057 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 35,112 |
| NBA MVPs Quiz | 0 | - | 4.92 | 1,245,879 |
| All-NBA First Team Players | 0 | - | 4.81 | 543,295 |
| NBA Team Logos | 0 | - | 4.81 | 693,597 |
| Formula One World Champions | 0 | - | 4.96 | 392,504 |
| Formula One Countries Visited | 0 | - | 4.97 | 153,435 |
| Formula 1: Top 3 in Driver's Championship | 0 | - | 4.96 | 101,899 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 311,565 |
| National Football Team Logos | 0 | - | 4.85 | 181,055 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.83 | 51,747 |
| FIFA World Cup Host Countries | 0 | - | 4.97 | 240,065 |
