| Countries of the Soviet Union | 0 | - | 4.98 | 194,318 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,531 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,754 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,068 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,832 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,047 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,529 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,299 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,972 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,557 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,021 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,099 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,400 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,947 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,498 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,010 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,738 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,332 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,003 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 856,191 |
| Arms Exports - Russia | 0 | - | 4.48 | 25,105 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,182 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,671 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,658 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,994 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,479 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,256 |
| Cities in European History #1 | 0 | - | 4.63 | 133,635 |
| Flags of Countries That Border Russia | 0 | - | 4.70 | 70,440 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,481 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,399 |
| Champions League Winners | 0 | - | 4.92 | 1,002,089 |
| Europe Capital to Country | 0 | - | 4.99 | 249,206 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,360 |
| Countries of Europe by Population | 0 | - | 4.98 | 179,662 |
| European Capitals by Map | 0 | - | 4.99 | 138,110 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,803 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,798 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,060 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,734 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,098 |
| European Coastal Capitals | 0 | - | 4.95 | 90,232 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 223,181 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,268 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,079 |
| European Capitals Furthest from the Sea | 0 | - | 4.91 | 81,992 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,324 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,677 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 75,969 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,099 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,584 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,068 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,037 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 71,965 |
| Official Cities in the UK | 0 | - | 4.89 | 282,536 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,674 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,822 |
| Biggest British Empire Countries | 0 | - | 4.74 | 99,615 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,688 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,721 |
| Political Movements by Country | 0 | - | 4.46 | 72,419 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 399,610 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,466 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,453 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,058 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,278 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,627 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,876 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,680,615 |
| European Capitals by Airport Code | 0 | - | 4.93 | 35,924 |
| Every European Country Shape | 0 | - | 4.96 | 201,050 |
| Name a Valid European Capital | 0 | - | 4.95 | 151,836 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,616 |
| Random European Capital to Country | 0 | - | 4.98 | 190,353 |
| Random European Country to Capital | 0 | - | 4.93 | 162,819 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,233 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,352 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,445 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 51,528 |
| UK Immigration by Country | 0 | - | 4.94 | 140,504 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,154 |
| British Cities with the Most Tourists | 0 | - | 4.82 | 69,788 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.98 | 146,496 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,778 |
| Prime Ministers of the UK | 0 | - | 4.95 | 437,115 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,824 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 120,380 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,494 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 140,243 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,727 |
| Hindu Countries | 0 | - | 4.86 | 49,906 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,313 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,514 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,530 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,344 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,685 |
| Random European Flag to Country | 0 | - | 4.89 | 181,734 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,436 |
| Holy Roman Empire Countries | 0 | - | 4.77 | 54,740 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,339 |
| Countries Once Held by Sweden | 0 | - | 4.17 | 34,749 |
| Scotland A-Z | 0 | - | 4.73 | 41,179 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,587 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,448 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,337 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,910 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,004 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,932 |
| National Founders | 0 | - | 4.40 | 83,764 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,066 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,266 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,178 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,036 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,733 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,387 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,633 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,962 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,611 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,964 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,580 |
| Random European Countries on a Map | 0 | - | 4.97 | 282,856 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 317,092 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,552 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,739 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,160 |
| All Countries that Once Bordered Germany | 0 | - | 4.34 | 74,804 |
| Countries of the German Empire | 0 | - | 4.51 | 37,826 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,026 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,177 |
| Which City In the United Kingdom? | 0 | - | 4.97 | 93,986 |
| British Places A-Z | 0 | - | 4.29 | 79,774 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,475 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,632 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,678 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,835 |
| Communist Countries in History | 0 | - | 4.63 | 494,367 |
| U.S. Cities with Teams from All Four Major Sports | 0 | - | 4.88 | 137,648 |
| MLB Baseball Teams Quiz | 0 | - | 4.91 | 886,544 |
| All Major North American Pro Sports Teams | 0 | - | 4.99 | 995,392 |
| All Teams to Ever Play a FIFA World Cup | 0 | - | 4.95 | 334,385 |
| African Countries That Have Been to the FIFA World Cup | 0 | - | 4.70 | 38,674 |
| FIFA World Cup Top 4 Positions | 0 | - | 4.96 | 459,254 |
| British Football Team Logos | 0 | - | 4.04 | 68,140 |
| Football Clubs in London | 0 | - | 4.33 | 128,399 |
| Champions League Top 4 | 0 | - | 4.77 | 135,304 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,907 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,353 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,687 |
| Richest Metro Areas in the U.S. | 0 | - | 4.42 | 43,514 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,089 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,467 |
| Europe Map Quiz | 0 | - | 5.00 | 4,749,899 |
| Word Scramble - European Capitals | 0 | - | 4.70 | 94,015 |
| Most Forested European Countries | 0 | - | 4.80 | 75,175 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,597 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,765 |
| Word Scramble - U.K. Cities | 0 | - | 4.57 | 64,902 |
| UK Cities and Towns by Map | 0 | - | 4.48 | 46,457 |
| Cities in the United Kingdom by Proximity | 0 | - | 4.63 | 48,067 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,219 |
| Most-Visited Countries by the British | 0 | - | 4.64 | 68,400 |
| Boroughs of London | 0 | - | 4.63 | 87,495 |
| London Geography | 0 | - | 4.47 | 59,593 |
| Scotland Trivia | 0 | - | 4.58 | 57,525 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,221 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,481 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,864 |
| Top 10 Richest Countries in Asia | 0 | - | 4.73 | 105,323 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,551 |
| Countries by Sports in 60 Seconds | 0 | - | 4.91 | 143,593 |
| NFL Football by Year, 1967–1999 | 0 | - | 4.34 | 25,444 |
| NFL Football by Year, 2000–present | 0 | - | 4.26 | 27,988 |
| 2018 FIFA World Cup Results | 0 | - | 4.95 | 131,600 |
| NFL Football Teams Quiz | 0 | - | 4.98 | 2,284,611 |
| NFL Football Team Logos | 0 | - | 4.91 | 625,157 |
| NCAA Football Cities | 0 | - | 4.31 | 64,649 |
| NCAA Football Teams | 0 | - | 4.96 | 386,086 |
| NCAA FBS Football Teams on a Map | 0 | - | 4.92 | 107,373 |
| NBA Basketball Teams Quiz | 0 | - | 4.98 | 2,569,157 |
| NCAA Basketball Teams | 0 | - | 4.94 | 335,413 |
| NHL Hockey Teams Quiz | 0 | - | 4.90 | 648,604 |
| MLB Baseball by Year, 1960–1989 | 0 | - | 4.09 | 18,674 |
| MLB Baseball by Year, 1990–present | 0 | - | 4.02 | 14,976 |
| Olympic Host Countries | 0 | - | 4.98 | 199,860 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,454 |
| NHL Ice Hockey Team Logos | 0 | - | 4.89 | 186,086 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 34,773 |
| NBA MVPs Quiz | 0 | - | 4.92 | 1,234,212 |
| All-NBA First Team Players | 0 | - | 4.83 | 539,012 |
| Formula One World Champions | 0 | - | 4.96 | 388,360 |
| Formula One Countries Visited | 0 | - | 4.96 | 143,041 |
| Formula 1: Top 3 in Driver's Championship | 0 | - | 4.96 | 100,276 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 306,916 |
| National Football Team Logos | 0 | - | 4.85 | 179,721 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.83 | 46,051 |
| FIFA World Cup Host Countries | 0 | - | 4.97 | 238,313 |
| England's Most Successful Football Clubs | 0 | - | 4.42 | 176,478 |
| English Cities With Multiple Football Teams | 0 | - | 4.46 | 70,417 |
| Teams that Beat England in Football | 0 | - | 4.73 | 81,127 |
| English Premier League 100 Goals Club | 0 | - | 4.42 | 240,666 |
