| Countries of the Soviet Union | 0 | - | 4.98 | 194,318 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,528 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,754 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,066 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,828 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,045 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,528 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,297 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,972 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,555 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,017 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,098 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,400 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,946 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,496 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,007 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,737 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,332 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,000 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 856,180 |
| Arms Exports - Russia | 0 | - | 4.48 | 25,105 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,181 |
| 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 | 79,992 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,477 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,247 |
| Cities in European History #1 | 0 | - | 4.63 | 133,633 |
| Flags of Countries That Border Russia | 0 | - | 4.70 | 70,439 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,480 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,398 |
| Champions League Winners | 0 | - | 4.92 | 1,002,065 |
| Europe Capital to Country | 0 | - | 4.99 | 249,197 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,356 |
| Countries of Europe by Population | 0 | - | 4.98 | 179,657 |
| European Capitals by Map | 0 | - | 4.99 | 138,106 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,801 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,795 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,054 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,733 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,098 |
| European Coastal Capitals | 0 | - | 4.95 | 90,231 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 223,178 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,268 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,078 |
| European Capitals Furthest from the Sea | 0 | - | 4.91 | 81,990 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,324 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,676 |
| 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 | 70,583 |
| 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 | 71,964 |
| Official Cities in the UK | 0 | - | 4.89 | 282,533 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,672 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,813 |
| Biggest British Empire Countries | 0 | - | 4.74 | 99,614 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,687 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,718 |
| Political Movements by Country | 0 | - | 4.46 | 72,418 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 399,607 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,463 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,449 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,058 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,277 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,626 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,874 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,680,489 |
| European Capitals by Airport Code | 0 | - | 4.93 | 35,922 |
| Every European Country Shape | 0 | - | 4.96 | 201,048 |
| Name a Valid European Capital | 0 | - | 4.95 | 151,836 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,615 |
| Random European Capital to Country | 0 | - | 4.98 | 190,348 |
| Random European Country to Capital | 0 | - | 4.93 | 162,736 |
| 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 | 83,443 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 51,527 |
| UK Immigration by Country | 0 | - | 4.94 | 140,500 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,152 |
| British Cities with the Most Tourists | 0 | - | 4.82 | 69,784 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.98 | 146,489 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,778 |
| Prime Ministers of the UK | 0 | - | 4.95 | 437,110 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,822 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 120,370 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,492 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 140,239 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,725 |
| Hindu Countries | 0 | - | 4.86 | 49,904 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,312 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,513 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,526 |
| Random European Capitals on a Map | 0 | - | 4.97 | 134,343 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,684 |
| Random European Flag to Country | 0 | - | 4.89 | 181,730 |
| 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 | 34,748 |
| Scotland A-Z | 0 | - | 4.73 | 41,177 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,584 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,446 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,333 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,909 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,001 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,931 |
| National Founders | 0 | - | 4.40 | 83,763 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,064 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,264 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,178 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,035 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,729 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,387 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,628 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,956 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,610 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,957 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,572 |
| Random European Countries on a Map | 0 | - | 4.97 | 282,854 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 317,087 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,551 |
| 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 | 74,803 |
| Countries of the German Empire | 0 | - | 4.51 | 37,825 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,025 |
| 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 | 79,771 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,468 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,631 |
| 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 | 494,361 |
| U.S. Cities with Teams from All Four Major Sports | 0 | - | 4.88 | 137,645 |
| MLB Baseball Teams Quiz | 0 | - | 4.91 | 886,520 |
| All Major North American Pro Sports Teams | 0 | - | 4.99 | 995,361 |
| All Teams to Ever Play a FIFA World Cup | 0 | - | 4.95 | 334,379 |
| African Countries That Have Been to the FIFA World Cup | 0 | - | 4.70 | 38,671 |
| FIFA World Cup Top 4 Positions | 0 | - | 4.96 | 459,244 |
| British Football Team Logos | 0 | - | 4.04 | 68,139 |
| Football Clubs in London | 0 | - | 4.33 | 128,397 |
| Champions League Top 4 | 0 | - | 4.77 | 135,303 |
| 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 | 4,749,810 |
| Word Scramble - European Capitals | 0 | - | 4.70 | 94,013 |
| Most Forested European Countries | 0 | - | 4.80 | 75,173 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,597 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,764 |
| Word Scramble - U.K. Cities | 0 | - | 4.57 | 64,902 |
| UK Cities and Towns by Map | 0 | - | 4.48 | 46,456 |
| Cities in the United Kingdom by Proximity | 0 | - | 4.63 | 48,066 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,217 |
| Most-Visited Countries by the British | 0 | - | 4.64 | 68,400 |
| Boroughs of London | 0 | - | 4.63 | 87,491 |
| London Geography | 0 | - | 4.47 | 59,593 |
| Scotland Trivia | 0 | - | 4.58 | 57,525 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,220 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,481 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 65,862 |
| Top 10 Richest Countries in Asia | 0 | - | 4.73 | 105,321 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,547 |
| Countries by Sports in 60 Seconds | 0 | - | 4.91 | 143,579 |
| NFL Football by Year, 1967–1999 | 0 | - | 4.34 | 25,443 |
| NFL Football by Year, 2000–present | 0 | - | 4.26 | 27,985 |
| 2018 FIFA World Cup Results | 0 | - | 4.95 | 131,596 |
| NFL Football Teams Quiz | 0 | - | 4.98 | 2,284,546 |
| NFL Football Team Logos | 0 | - | 4.91 | 625,132 |
| NCAA Football Cities | 0 | - | 4.31 | 64,648 |
| NCAA Football Teams | 0 | - | 4.96 | 386,059 |
| NCAA FBS Football Teams on a Map | 0 | - | 4.92 | 107,364 |
| NBA Basketball Teams Quiz | 0 | - | 4.98 | 2,569,082 |
| NCAA Basketball Teams | 0 | - | 4.94 | 335,409 |
| NHL Hockey Teams Quiz | 0 | - | 4.90 | 648,582 |
| 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 | 199,857 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,453 |
| NHL Ice Hockey Team Logos | 0 | - | 4.89 | 186,079 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 34,772 |
| NBA MVPs Quiz | 0 | - | 4.92 | 1,234,170 |
| All-NBA First Team Players | 0 | - | 4.83 | 538,994 |
| Formula One World Champions | 0 | - | 4.96 | 388,350 |
| Formula One Countries Visited | 0 | - | 4.96 | 143,039 |
| Formula 1: Top 3 in Driver's Championship | 0 | - | 4.96 | 100,271 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 306,898 |
| National Football Team Logos | 0 | - | 4.85 | 179,719 |
| All Countries Never To Qualify For A FIFA World Cup | 0 | - | 4.83 | 46,043 |
| FIFA World Cup Host Countries | 0 | - | 4.97 | 238,308 |
| 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 | 240,664 |
