| Countries Invaded by the USSR | 0 | - | 4.29 | 86,914 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.42 | 23,714 |
| English Monarchs Quiz | 0 | - | 4.91 | 443,832 |
| Monarchies of Europe | 0 | - | 4.88 | 86,422 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 132,747 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 61,892 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 48,306 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 57,960 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 98,717 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 67,337 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 180,125 |
| Top 10 Hottest European Countries | 0 | - | 4.87 | 114,939 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 177,447 |
| Biggest Trading Partners - Russia | 0 | - | 4.56 | 33,829 |
| Communist Countries in History | 0 | - | 4.65 | 452,284 |
| Prime Ministers of the UK | 0 | - | 4.95 | 378,475 |
| Deadliest U.S. Wars | 0 | - | 4.82 | 157,130 |
| Europe Map Quiz | 0 | - | 5.00 | 4,263,744 |
| Top 10 Richest Countries in Europe | 0 | - | 4.88 | 134,140 |
| Biggest Trading Partners - European Union | 0 | - | 4.90 | 64,361 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 75,954 |
| Countries With the Most Russian Speakers | 0 | - | 4.94 | 55,512 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.82 | 9,691 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,142,013 |
| Canadian Prime Ministers Quiz | 0 | - | 4.60 | 48,726 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 141,621 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 206,749 |
| Countries in World War I | 0 | - | 4.89 | 208,494 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 98,981 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 175,776 |
| Houses of British Monarchs | 0 | - | 4.50 | 51,803 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.92 | 46,117 |
| U.S. Presidents by Picture | 0 | - | 4.86 | 392,400 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 334,313 |
| European Secessionist Movements on a Map | 0 | - | 4.55 | 31,205 |
| Russia A-Z | 0 | - | 4.45 | 25,729 |
| Counties of England | 0 | - | 4.96 | 684,730 |
| Invasions of Great Britain | 0 | - | 4.48 | 55,220 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.55 | 13,755 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 351,373 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 165,581 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,738 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,034,959 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,173,545 |
| 10 Easternmost Countries in Europe | 0 | - | 4.84 | 91,150 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 159,753 |
| 10 Westernmost Countries in Europe | 0 | - | 4.95 | 137,780 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.94 | 183,854 |
| European Landmarks Map Quiz | 0 | - | 4.98 | 76,394 |
| The Only European Country ... | 0 | - | 4.94 | 176,391 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.90 | 48,104 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 73,947 |
| Eastern Europe Map Quiz | 0 | - | 4.89 | 114,854 |
| Slavic Countries | 0 | - | 4.96 | 99,911 |
| UK Cities Map Quiz | 0 | - | 4.94 | 431,544 |
| Parts of the United Kingdom | 0 | - | 4.88 | 83,086 |
| Counties of England Map Quiz | 0 | - | 4.97 | 285,551 |
| Wives of King Henry VIII | 0 | - | 4.53 | 44,544 |
| English Royal Consorts | 0 | - | 4.27 | 34,403 |
| Countries the UK Declared War On | 0 | - | 4.57 | 111,572 |
| Geography of the British Empire | 0 | - | 4.50 | 36,572 |
| The Reign of Queen Elizabeth I | 0 | - | 4.50 | 29,533 |
| Name the Popes Quiz | 0 | - | 4.42 | 100,816 |
| Countries of the Popes | 0 | - | 4.79 | 79,461 |
| Monarchies of Asia | 0 | - | 4.95 | 53,683 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 220,799 |
| European Diaspora - Top 11 Countries | 0 | - | 4.91 | 82,904 |
| 10 European Countries with the Most Tourists | 0 | - | 4.97 | 119,789 |
| Three Band Flags of Europe | 0 | - | 4.97 | 159,833 |
| Catholic Countries in Europe | 0 | - | 4.87 | 82,941 |
| Pixelated Europe Map | 0 | - | 4.90 | 108,670 |
| European Countries with One Border | 0 | - | 4.96 | 149,677 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 143,585 |
| Countries That Border Russia | 0 | - | 4.98 | 423,869 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 101,096 |
| Regions of France Map Quiz | 0 | - | 4.96 | 126,552 |
| Countries Bordering France | 0 | - | 4.87 | 355,345 |
| States of Germany Map Quiz | 0 | - | 4.91 | 119,603 |
| Countries Closest to Germany A-Z | 0 | - | 4.96 | 8,144 |
| Countries Bordering Germany | 0 | - | 4.99 | 339,096 |
| Countries in World War II | 0 | - | 4.70 | 803,707 |
| Political Movements by Country | 0 | - | 4.47 | 68,253 |
| Battle to Country | 0 | - | 4.92 | 34,936 |
| Spain Cities Map Quiz | 0 | - | 4.86 | 85,471 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 168,327 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 92,366 |
| Geography of the Spanish Empire | 0 | - | 4.47 | 35,115 |
| Countries Closest to Spain | 0 | - | 4.95 | 204,705 |
| UK Immigration by Country | 0 | - | 4.95 | 124,369 |
| United Kingdom Country Quiz | 0 | - | 4.94 | 117,455 |
| Countries that Visit the UK the Most | 0 | - | 4.84 | 61,852 |
| Counties of the UK and Ireland | 0 | - | 4.97 | 102,521 |
| British History A-Z | 0 | - | 4.48 | 31,027 |
| Medieval English History | 0 | - | 4.52 | 40,653 |
| British History Multiple Choice #1 | 0 | - | 4.47 | 51,333 |
| The Reign of Queen Elizabeth II | 0 | - | 4.38 | 33,635 |
| World Capitals Closest to London | 0 | - | 4.90 | 93,028 |
| 50 Busiest Air Routes from London | 0 | - | 4.89 | 84,987 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 116,174 |
| Top 10 Richest Countries in Asia | 0 | - | 4.86 | 77,830 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 100,997 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.90 | 91,837 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 81,432 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 92,616 |
| Top 10 Richest Countries in Africa | 0 | - | 4.87 | 67,203 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 108,937 |
| Category Elimination - African Geography #1 | 0 | - | 4.89 | 78,934 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.87 | 67,544 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 80,617 |
| U.S. Federal Agency Acronyms | 0 | - | 4.51 | 75,714 |
| All U.S. Supreme Court Justices | 0 | - | 4.49 | 27,233 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 65,823 |
| Most Guessed European Capitals | 0 | - | 4.89 | 96,163 |
| Most Forested European Countries | 0 | - | 4.82 | 67,743 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 127,606 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 198,705 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 141,423 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 186,996 |
| Name a Valid European Country #2 | 0 | - | 4.93 | 83,557 |
| European Capital Superlatives - Top 2 | 0 | - | 4.93 | 61,398 |
| Countries that Border Poland | 0 | - | 4.99 | 157,850 |
| Russia Country Quiz | 0 | - | 4.84 | 102,505 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.94 | 75,561 |
| Arms Exports - Russia | 0 | - | 4.47 | 23,252 |
| Countries that Border Hungary | 0 | - | 4.98 | 95,855 |
| Countries Bordering Serbia | 0 | - | 4.95 | 82,519 |
| Countries Bordering Austria | 0 | - | 4.97 | 109,602 |
| France Cities Map Quiz | 0 | - | 4.95 | 147,041 |
| Countries that Visit France the Most | 0 | - | 4.84 | 39,612 |
| Countries Closest to Metropolitan France | 0 | - | 4.87 | 65,995 |
| Germany Country Quiz | 0 | - | 4.83 | 139,123 |
| Germany Cities Map Quiz | 0 | - | 4.84 | 105,307 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,148 |
| Countries With the Most German Speakers | 0 | - | 4.88 | 51,447 |
| Italy Country Quiz | 0 | - | 4.81 | 107,834 |
| Regions of Italy Map Quiz | 0 | - | 4.95 | 132,786 |
| Italy Cities Map Quiz | 0 | - | 4.96 | 126,401 |
| Countries Bordering Italy | 0 | - | 4.92 | 78,574 |
| Countries Italy Declared War On | 0 | - | 4.79 | 39,727 |
| Countries Closest to Italy | 0 | - | 4.97 | 177,877 |
| National Founders | 0 | - | 4.38 | 79,086 |
| Important Cities in WWII | 0 | - | 4.48 | 82,772 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 71,363 |
| Roman Emperors | 0 | - | 4.95 | 95,019 |
| Greenland Country Quiz | 0 | - | 4.82 | 32,095 |
| Countries Closest to Iceland | 0 | - | 4.87 | 62,227 |
| Countries that Beat Portugal | 0 | - | 4.83 | 35,292 |
| Biggest Trading Partners - Spain | 0 | - | 4.93 | 50,063 |
| Countries that Beat Spain | 0 | - | 4.96 | 55,495 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 89,685 |
| Monty Python Quotes | 0 | - | 4.89 | 40,266 |
| Shakespeare's Plays Quiz | 0 | - | 4.41 | 346,390 |
| Ultimate Harry Potter Name Game | 0 | - | 4.95 | 462,137 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 24,733 |
| The Reign of Henry VIII | 0 | - | 4.24 | 26,197 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.76 | 18,929 |
| British History Quiz for Dummies | 0 | - | 4.54 | 61,232 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.29 | 23,273 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 22,155 |
| The Life of Winston Churchill | 0 | - | 4.10 | 11,310 |
| 2025 Football League Teams | 0 | - | 4.93 | 341,948 |
| Top 4 in English Football, 1888–2024 | 0 | - | 4.95 | 105,923 |
| 2025 English Premier League Teams | 0 | - | 4.85 | 733,057 |
| Scotland A-Z | 0 | - | 4.75 | 37,588 |
| Pope Facts | 0 | - | 4.44 | 17,616 |
| Biggest Trading Partners - Turkey | 0 | - | 4.82 | 44,464 |
| Countries with the Most Hindus | 0 | - | 4.92 | 112,552 |
| Biggest Trading Partners - South Africa | 0 | - | 4.82 | 37,316 |
| U.S. States by Governor Quiz | 0 | - | 4.42 | 16,895 |
| U.S. Political Parties in History | 0 | - | 4.42 | 26,066 |
| U.S. Government Agencies | 0 | - | 4.41 | 17,521 |
| U.S. Vice Presidents | 0 | - | 4.42 | 118,374 |
| U.S. Presidential Trivia #1 | 0 | - | 4.51 | 96,318 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.57 | 80,662 |
| U.S. Presidential Trivia #2 | 0 | - | 4.51 | 39,330 |
| Assassinated U.S. Presidents | 0 | - | 4.54 | 79,572 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 33,454 |
| The American Civil War | 0 | - | 4.72 | 48,723 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 99,433 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 100,038 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 56,925 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,525 |
| Random European Flag to Country | 0 | - | 4.90 | 160,497 |
| Russia by Picture | 0 | - | 4.35 | 18,700 |
| Flags of Countries That Border Russia | 0 | - | 4.70 | 64,318 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.87 | 88,685 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.82 | 30,738 |
| Moldova Country Quiz | 0 | - | 4.87 | 27,132 |
| Andorra Country Quiz | 0 | - | 4.88 | 27,632 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 87,706 |
| The Reign of Napoleon | 0 | - | 4.53 | 35,952 |
| Germany A-Z | 0 | - | 4.70 | 49,538 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 61,882 |
| Countries that Beat Germany | 0 | - | 4.87 | 69,650 |
| Olympian Gods Quiz | 0 | - | 4.96 | 455,577 |
| The Trojan War | 0 | - | 4.81 | 35,729 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 580,549 |
| Name that Greek Letter | 0 | - | 4.94 | 294,559 |
| Italy A-Z | 0 | - | 4.43 | 40,418 |
| Countries that Beat Italy | 0 | - | 4.87 | 44,896 |
