| Prime Ministers of the UK | 0 | - | 4.96 | 434,717 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,687 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,052 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,274 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,447 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,310 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,655,179 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,170 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,116 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,276 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,508 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,642 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,793 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,507 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,523 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,169 |
| Countries of the Popes | 0 | - | 4.79 | 127,236 |
| National Founders | 0 | - | 4.40 | 83,653 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,796 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,489 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,339 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,939 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,002 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,600 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,481 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,624 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,207 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,575 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,348 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,881 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,682 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,770 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,371 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,969 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,441 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,433 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,128 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,031 |
| Countries That Border Russia | 0 | - | 4.98 | 458,958 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,852 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,246 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,293 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,528 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,317 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,110 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,546 |
| Political Movements by Country | 0 | - | 4.46 | 72,264 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,912 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,873 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,186 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,371 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,742 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,883 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,530 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,670 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,274 |
| Every European Country Shape | 0 | - | 4.96 | 200,217 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,200 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,152 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,986 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,677 |
| Countries that Border Poland | 0 | - | 4.99 | 171,374 |
| Russia Country Quiz | 0 | - | 4.85 | 113,650 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,521 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,768 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,962 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,911 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,514 |
| UK Immigration by Country | 0 | - | 4.94 | 139,669 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,192 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,293 |
| Name the English Monarchs | 0 | - | 4.92 | 498,008 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,288 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,260 |
| Hindu Countries | 0 | - | 4.86 | 49,594 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,967 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,377 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,733 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,964 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,912 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,558 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,657 |
| The Trojan War | 0 | - | 4.83 | 39,436 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,009 |
| Name that Greek Letter | 0 | - | 4.94 | 321,706 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,551 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,058 |
| Roman Emperors | 0 | - | 4.95 | 118,502 |
| Monty Python Quotes | 0 | - | 4.88 | 42,325 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,333 |
| Pope Facts | 0 | - | 4.39 | 31,047 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,368 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,951 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,977 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,949 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,960 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,513 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,008 |
| Presidential Middle Names | 0 | - | 4.41 | 59,715 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,745 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,826 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,748 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,176 |
| The American Revolution | 0 | - | 4.52 | 54,059 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,402 |
| Random European Flag to Country | 0 | - | 4.89 | 180,931 |
| History of Russia Quiz | 0 | - | 4.49 | 31,795 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,159 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,694 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,377 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,266 |
| Ancient Greek Words | 0 | - | 4.92 | 110,713 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,320 |
| History of Italy | 0 | - | 4.55 | 31,819 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,388 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,486 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,984 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,690 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,426 |
| Animals in British History | 0 | - | 4.44 | 25,871 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 851,603 |
| Scotland A-Z | 0 | - | 4.73 | 41,048 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,821 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,688 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,555 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,396 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,429 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,579 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,528 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,828 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,750 |
| Random European Countries on a Map | 0 | - | 4.97 | 281,992 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,581 |
| Arms Exports - Russia | 0 | - | 4.48 | 24,764 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,491 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,310 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,746 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,602 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,148 |
| Shakespeare's Plays Quiz | 0 | - | 4.38 | 385,788 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,398 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,126 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,039 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,600 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,124 |
| The Vietnam War | 0 | - | 4.43 | 35,299 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,865 |
| Communist Countries in History | 0 | - | 4.63 | 492,564 |
| History of India | 0 | - | 4.61 | 21,288 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,180 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,513 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,420 |
| History of South Africa | 0 | - | 4.60 | 17,602 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,409 |
| Australian Capitals | 0 | - | 4.92 | 62,594 |
| History of Mexico | 0 | - | 4.58 | 15,231 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,071 |
| American Political Words | 0 | - | 4.39 | 23,341 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,074 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,464 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,809 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,168 |
| First Ladies of the United States | 0 | - | 4.28 | 85,248 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,817 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,113 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,301 |
| U.S. President Scramble | 0 | - | 4.40 | 116,209 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,002 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,837 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,027 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,697 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,690 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,588 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,236 |
| Official European Union Languages | 0 | - | 4.97 | 236,670 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,712 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,248 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,158 |
| Most Forested European Countries | 0 | - | 4.80 | 74,916 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,534 |
| European Cities with the Biggest Economies | 0 | - | 4.62 | 38,188 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,171 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 315,765 |
| Albania Country Quiz | 0 | - | 4.54 | 38,662 |
| Russia by Picture | 0 | - | 4.40 | 20,253 |
| Russian History A-Z | 0 | - | 4.38 | 30,859 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,772 |
| History of Austria | 0 | - | 4.70 | 17,754 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,902 |
| Geography of the French Empire | 0 | - | 4.48 | 26,938 |
| The French Revolution | 0 | - | 4.46 | 23,785 |
| History of France | 0 | - | 4.59 | 56,074 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,386 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,936 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,204 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,781 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,774 |
| Mythology A-Z | 0 | - | 4.31 | 37,005 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,986 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 71,740 |
