| Prime Ministers of the UK | 0 | - | 4.96 | 434,472 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,670 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,027 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,195 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,407 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,209 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,652,657 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,110 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,086 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,219 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,443 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,627 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,745 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,501 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,483 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,101 |
| Countries of the Popes | 0 | - | 4.79 | 127,169 |
| National Founders | 0 | - | 4.40 | 83,643 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,576 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,428 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,331 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,870 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,996 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,496 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,293 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,602 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,060 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,572 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,286 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,772 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,655 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,671 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,305 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,892 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,381 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,340 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,066 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,981 |
| Countries That Border Russia | 0 | - | 4.98 | 458,807 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,792 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,215 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,280 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,510 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,305 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,033 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,533 |
| Political Movements by Country | 0 | - | 4.46 | 72,253 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,832 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,842 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,155 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,342 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,732 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,878 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,507 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,669 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,215 |
| Every European Country Shape | 0 | - | 4.96 | 200,083 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,179 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,128 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,935 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,647 |
| Countries that Border Poland | 0 | - | 4.99 | 171,306 |
| Russia Country Quiz | 0 | - | 4.85 | 113,610 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,361 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,714 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,932 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,737 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,463 |
| UK Immigration by Country | 0 | - | 4.94 | 139,562 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,083 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,212 |
| Name the English Monarchs | 0 | - | 4.92 | 497,747 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,202 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,207 |
| Hindu Countries | 0 | - | 4.85 | 49,542 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,939 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,373 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,662 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,883 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,861 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,526 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,494 |
| The Trojan War | 0 | - | 4.83 | 39,420 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,696 |
| Name that Greek Letter | 0 | - | 4.94 | 321,586 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,495 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,028 |
| Roman Emperors | 0 | - | 4.95 | 118,417 |
| Monty Python Quotes | 0 | - | 4.88 | 42,320 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,176 |
| Pope Facts | 0 | - | 4.39 | 31,032 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,306 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,927 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,968 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,882 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,920 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,448 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,983 |
| Presidential Middle Names | 0 | - | 4.41 | 59,687 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,712 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,798 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,730 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,161 |
| The American Revolution | 0 | - | 4.52 | 54,049 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,238 |
| Random European Flag to Country | 0 | - | 4.89 | 180,852 |
| History of Russia Quiz | 0 | - | 4.49 | 31,784 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,119 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,664 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,336 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,780 |
| Ancient Greek Words | 0 | - | 4.92 | 110,639 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,206 |
| History of Italy | 0 | - | 4.55 | 31,809 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,346 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,476 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,974 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,645 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,377 |
| Animals in British History | 0 | - | 4.44 | 25,867 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 851,062 |
| Scotland A-Z | 0 | - | 4.73 | 41,031 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,815 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,668 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,466 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,317 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,380 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,465 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,443 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,058 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,736 |
| Random European Countries on a Map | 0 | - | 4.97 | 281,901 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,330 |
| Arms Exports - Russia | 0 | - | 4.48 | 24,762 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,418 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,291 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,675 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,415 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,143 |
| Shakespeare's Plays Quiz | 0 | - | 4.38 | 385,626 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,389 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,090 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,027 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,593 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,066 |
| The Vietnam War | 0 | - | 4.43 | 35,287 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,845 |
| Communist Countries in History | 0 | - | 4.63 | 492,379 |
| History of India | 0 | - | 4.61 | 21,278 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,159 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,822 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,393 |
| History of South Africa | 0 | - | 4.60 | 17,599 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,066 |
| Australian Capitals | 0 | - | 4.92 | 62,591 |
| History of Mexico | 0 | - | 4.58 | 15,227 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,191 |
| American Political Words | 0 | - | 4.39 | 23,337 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,073 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,460 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,806 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,162 |
| First Ladies of the United States | 0 | - | 4.28 | 85,229 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,812 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,109 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,261 |
| U.S. President Scramble | 0 | - | 4.40 | 116,187 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,998 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,826 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,016 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,689 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,681 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,564 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,212 |
| Official European Union Languages | 0 | - | 4.97 | 236,467 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,668 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,072 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,146 |
| Most Forested European Countries | 0 | - | 4.80 | 74,894 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,530 |
| European Cities with the Biggest Economies | 0 | - | 4.62 | 38,172 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,109 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 315,636 |
| Albania Country Quiz | 0 | - | 4.54 | 38,630 |
| Russia by Picture | 0 | - | 4.40 | 20,242 |
| Russian History A-Z | 0 | - | 4.38 | 30,726 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,758 |
| History of Austria | 0 | - | 4.70 | 17,743 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,864 |
| Geography of the French Empire | 0 | - | 4.48 | 26,923 |
| The French Revolution | 0 | - | 4.46 | 23,773 |
| History of France | 0 | - | 4.59 | 55,980 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,381 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,922 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,121 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,761 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,765 |
| Mythology A-Z | 0 | - | 4.31 | 36,984 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,860 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 71,718 |
