| Prime Ministers of the UK | 0 | - | 4.95 | 442,449 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,205 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,940 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,759 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,581 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,820 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,726,885 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,263 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,327 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,658 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,486 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,940 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,033 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 54,005 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,999 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,956 |
| Countries of the Popes | 0 | - | 4.79 | 128,760 |
| National Founders | 0 | - | 4.40 | 83,978 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,586 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,368 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,658 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,038 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,133 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,664 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,503 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,464 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,522 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,515 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,756 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,843 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,841 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,884 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,461 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,532 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,411 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,536 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,821 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,879 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,609 |
| Countries That Border Russia | 0 | - | 4.98 | 464,566 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,586 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,166 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,660 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,575 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,091 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 29,039 |
| Political Movements by Country | 0 | - | 4.46 | 72,786 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,151 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,148 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,109 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,865 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,816 |
| Every European Country Shape | 0 | - | 4.96 | 203,052 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,828 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,757 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,110 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,581 |
| Countries that Border Poland | 0 | - | 4.99 | 173,200 |
| Russia Country Quiz | 0 | - | 4.83 | 115,331 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,921 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,114 |
| Countries Italy Declared War On | 0 | - | 4.75 | 44,575 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,685 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,953 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,405 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,900 |
| UK Immigration by Country | 0 | - | 4.94 | 141,746 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,051 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 75,882 |
| Name the English Monarchs | 0 | - | 4.91 | 506,618 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,008 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,384 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,565 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,113 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 77,046 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,366 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,032 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,600 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,189 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,370 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,631 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,438 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,808 |
| The Trojan War | 0 | - | 4.83 | 40,000 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,124 |
| Name that Greek Letter | 0 | - | 4.93 | 325,028 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,995 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,603 |
| Roman Emperors | 0 | - | 4.95 | 121,249 |
| Monty Python Quotes | 0 | - | 4.89 | 42,612 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,399 |
| Pope Facts | 0 | - | 4.39 | 31,396 |
| Hindu Countries | 0 | - | 4.87 | 50,594 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,556 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,576 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,363 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,661 |
| Presidential Middle Names | 0 | - | 4.41 | 60,743 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,705 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,906 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,214 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,640 |
| The American Revolution | 0 | - | 4.52 | 54,363 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,593 |
| Random European Flag to Country | 0 | - | 4.90 | 184,285 |
| History of Russia Quiz | 0 | - | 4.47 | 32,009 |
| Russia by Picture | 0 | - | 4.41 | 20,485 |
| Russian History A-Z | 0 | - | 4.35 | 32,234 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,826 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,154 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,896 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,862 |
| Ancient Greek Words | 0 | - | 4.93 | 112,513 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,607 |
| History of Italy | 0 | - | 4.55 | 32,154 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,363 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,827 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,429 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,836 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,102 |
| Animals in British History | 0 | - | 4.43 | 26,103 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 871,668 |
| Scotland A-Z | 0 | - | 4.73 | 41,465 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,219 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,071 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,524 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,591 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,778 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,237 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,605 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,499 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,642 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,173 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,104 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,194 |
| Random European Countries on a Map | 0 | - | 4.97 | 285,171 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 320,586 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,852 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,195 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,417 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 112,519 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,858 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,904 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,273 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 390,192 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,821 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,230 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,481 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,885 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,770 |
| The Vietnam War | 0 | - | 4.44 | 35,662 |
| Countries of the Japanese Empire | 0 | - | 4.96 | 104,619 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,444 |
| Communist Countries in History | 0 | - | 4.63 | 498,299 |
| History of South Africa | 0 | - | 4.60 | 17,766 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,604 |
| Australian Capitals | 0 | - | 4.92 | 62,836 |
| History of Mexico | 0 | - | 4.52 | 15,366 |
| United States Map Quiz | 0 | - | 4.98 | 4,171,779 |
| American Political Words | 0 | - | 4.39 | 23,475 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,218 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,565 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,906 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,038 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,367 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,779 |
| First Ladies of the United States | 0 | - | 4.28 | 85,989 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.42 | 24,072 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,322 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,500 |
| U.S. President Scramble | 0 | - | 4.40 | 117,486 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,365 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,102 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,352 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.31 | 59,143 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,094 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,950 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,755 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 127,481 |
| Official European Union Languages | 0 | - | 4.97 | 239,846 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,680 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,003 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,495 |
| Most Forested European Countries | 0 | - | 4.80 | 75,692 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,711 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,619 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 218,075 |
| Albania Country Quiz | 0 | - | 4.54 | 39,261 |
| Serbia Country Quiz | 0 | - | 4.44 | 35,217 |
| History of Austria | 0 | - | 4.70 | 17,977 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,371 |
| Geography of the French Empire | 0 | - | 4.45 | 27,220 |
| The French Revolution | 0 | - | 4.47 | 24,149 |
| History of France | 0 | - | 4.61 | 57,636 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,560 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,623 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,835 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,245 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,050 |
| Mythology A-Z | 0 | - | 4.31 | 37,403 |
