| Prime Ministers of the UK | 0 | - | 4.96 | 436,438 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,777 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,256 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,997 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,651 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,783 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,672,353 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,725 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,385 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,585 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,838 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,706 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,057 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,623 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,850 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,530 |
| Countries of the Popes | 0 | - | 4.79 | 127,558 |
| National Founders | 0 | - | 4.40 | 83,727 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,883 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,882 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,403 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,304 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,023 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,290 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,229 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,727 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,819 |
| UK Cities Map Quiz | 0 | - | 4.95 | 463,121 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,612 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,771 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,629 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,917 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,607 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,840 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,482 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,811 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,913 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,451 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,327 |
| Countries That Border Russia | 0 | - | 4.98 | 460,197 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,177 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,438 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,382 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,373 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,588 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,634 |
| Political Movements by Country | 0 | - | 4.46 | 72,375 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,273 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,144 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,488 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,730 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,840 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,960 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,665 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,695 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,705 |
| Every European Country Shape | 0 | - | 4.96 | 200,761 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,338 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,285 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,422 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,887 |
| Countries that Border Poland | 0 | - | 4.99 | 171,742 |
| Russia Country Quiz | 0 | - | 4.85 | 114,007 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,435 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,037 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,125 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,383 |
| UK Immigration by Country | 0 | - | 4.94 | 140,057 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,855 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,615 |
| Name the English Monarchs | 0 | - | 4.92 | 499,888 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,651 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 119,054 |
| Hindu Countries | 0 | - | 4.86 | 49,802 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,198 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,419 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,260 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,458 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,220 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,759 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,131 |
| The Trojan War | 0 | - | 4.83 | 39,549 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,314 |
| Name that Greek Letter | 0 | - | 4.93 | 322,454 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,106 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,257 |
| Roman Emperors | 0 | - | 4.95 | 119,152 |
| Monty Python Quotes | 0 | - | 4.88 | 42,371 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,812 |
| Pope Facts | 0 | - | 4.39 | 31,124 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,605 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,169 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,118 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,233 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,890 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,300 |
| Presidential Middle Names | 0 | - | 4.41 | 59,908 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,962 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,176 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,843 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,267 |
| The American Revolution | 0 | - | 4.52 | 54,136 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,586 |
| Random European Flag to Country | 0 | - | 4.89 | 181,492 |
| History of Russia Quiz | 0 | - | 4.49 | 31,836 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,443 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,819 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,621 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,163 |
| Ancient Greek Words | 0 | - | 4.93 | 111,057 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,995 |
| History of Italy | 0 | - | 4.55 | 31,892 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,575 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,553 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,081 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 107,921 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,701 |
| Animals in British History | 0 | - | 4.44 | 25,928 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 854,786 |
| Scotland A-Z | 0 | - | 4.73 | 41,136 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,356 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,867 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,835 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,309 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,090 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,653 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,437 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,180 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,201 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,836 |
| Random European Countries on a Map | 0 | - | 4.97 | 282,595 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 316,677 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,898 |
| Arms Exports - Russia | 0 | - | 4.48 | 25,086 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,084 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,429 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,197 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,991 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,170 |
| Shakespeare's Plays Quiz | 0 | - | 4.38 | 386,690 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,448 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,303 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,130 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,656 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,086 |
| The Vietnam War | 0 | - | 4.43 | 35,390 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,028 |
| Communist Countries in History | 0 | - | 4.63 | 493,747 |
| History of India | 0 | - | 4.61 | 21,336 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,294 |
| Africa Map Quiz | 0 | - | 5.00 | 2,110,047 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,608 |
| History of South Africa | 0 | - | 4.60 | 17,635 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,222 |
| Australian Capitals | 0 | - | 4.92 | 62,651 |
| History of Mexico | 0 | - | 4.58 | 15,256 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,697 |
| American Political Words | 0 | - | 4.39 | 23,375 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,113 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,489 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,830 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,595 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,195 |
| First Ladies of the United States | 0 | - | 4.28 | 85,359 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,863 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,157 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,645 |
| U.S. President Scramble | 0 | - | 4.40 | 116,434 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,074 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,878 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,078 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,770 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,729 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,834 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,387 |
| Official European Union Languages | 0 | - | 4.97 | 237,586 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,273 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,401 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,229 |
| Most Forested European Countries | 0 | - | 4.80 | 75,087 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,567 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,280 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,596 |
| Albania Country Quiz | 0 | - | 4.54 | 38,818 |
| Russia by Picture | 0 | - | 4.40 | 20,320 |
| Russian History A-Z | 0 | - | 4.38 | 31,372 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,886 |
| History of Austria | 0 | - | 4.70 | 17,794 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,027 |
| Geography of the French Empire | 0 | - | 4.45 | 26,990 |
| The French Revolution | 0 | - | 4.46 | 23,856 |
| History of France | 0 | - | 4.59 | 56,566 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,422 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,082 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,781 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,861 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,833 |
| Mythology A-Z | 0 | - | 4.31 | 37,094 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,762 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 71,880 |
