| Prime Ministers of the UK | 0 | - | 4.95 | 437,001 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,679,004 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,962 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,812 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,731 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,672 |
| Countries of the Popes | 0 | - | 4.79 | 127,676 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,885 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,699 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,327 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,939 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,974 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,682 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,312 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,159 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,805 |
| Ancient Greek Words | 0 | - | 4.93 | 111,186 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,656 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,360 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,030 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,408 |
| Presidential Middle Names | 0 | - | 4.41 | 59,983 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,579 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,046 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,274 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,299 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,914 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,996 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,587 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,290 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,804 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,285 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,472 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,441 |
| Pope Facts | 0 | - | 4.39 | 31,149 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,038 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,634 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,944 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,877 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,646 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 75,951 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,076 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,563 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,455 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,508 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,395 |
| Biggest British Empire Countries | 0 | - | 4.74 | 99,580 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,421 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,246 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,727 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,479 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,782 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,211 |
| First Ladies of the United States | 0 | - | 4.28 | 85,414 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,168 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,754 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,105 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,897 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,181 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,747 |
| Every European Country Shape | 0 | - | 4.96 | 201,000 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,779 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,407 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,934 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,982 |
| Name the English Monarchs | 0 | - | 4.91 | 500,552 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,846 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,620 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,789 |
| National Founders | 0 | - | 4.40 | 83,756 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,292 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,888 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,489 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,327 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,649 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,410 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,735 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 97,969 |
| The Trojan War | 0 | - | 4.83 | 39,597 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,130 |
| Name that Greek Letter | 0 | - | 4.93 | 322,755 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,336 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,295 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,221 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 95,261 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,330 |
| Roman Emperors | 0 | - | 4.95 | 119,427 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 102,148 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,070 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,276 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,178 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,187 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 855,874 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,895 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,902 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,247 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,291 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,565 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,336 |
| The George Washington Presidency | 0 | - | 4.03 | 14,512 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,694 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,579 |
| The John Adams Presidency | 0 | - | 4.12 | 8,712 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,908 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,716 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,275 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,643 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,736 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,814 |
| The American Revolution | 0 | - | 4.52 | 54,168 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,870 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,516 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,033 |
| Random European Countries on a Map | 0 | - | 4.97 | 282,805 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 316,996 |
| History of Russia Quiz | 0 | - | 4.49 | 31,859 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,526 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,721 |
| History of Italy | 0 | - | 4.55 | 31,911 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,660 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,586 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,115 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,007 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,751 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,175 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,442 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,484 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,399 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,235 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,248 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,735 |
| History of India | 0 | - | 4.61 | 21,363 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,542 |
| History of South Africa | 0 | - | 4.60 | 17,646 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,032 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,726 |
| U.S. President Scramble | 0 | - | 4.40 | 116,514 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,104 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,804 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,981 |
| Europe Map Quiz | 0 | - | 5.00 | 4,748,913 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,071 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,872 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,738 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,359 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,788 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,001 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,828 |
| History of Austria | 0 | - | 4.70 | 17,815 |
| Geography of the French Empire | 0 | - | 4.45 | 27,008 |
| The French Revolution | 0 | - | 4.46 | 23,878 |
| History of France | 0 | - | 4.59 | 56,679 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,443 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,151 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,989 |
| Mythology A-Z | 0 | - | 4.31 | 37,127 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,733 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,022 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,538 |
| Roman History by Picture | 0 | - | 4.46 | 26,409 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,354 |
| Byzantine History | 0 | - | 4.91 | 28,720 |
| The Vikings! | 0 | - | 4.46 | 28,300 |
| The Portuguese Empire | 0 | - | 4.58 | 12,035 |
| Arthurian Legend | 0 | - | 4.33 | 25,083 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,281 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,172 |
| Geography of the British Empire | 0 | - | 4.48 | 39,604 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,225 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,583 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,346 |
| History of Iran | 0 | - | 4.66 | 16,318 |
| Vietnam War Countries | 0 | - | 4.83 | 93,945 |
| History of China | 0 | - | 4.37 | 56,952 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,084 |
| Communist Countries in History | 0 | - | 4.63 | 494,243 |
| Political Movements by Country | 0 | - | 4.46 | 72,414 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,344 |
| Countries of Africa | 0 | - | 5.00 | 2,524,121 |
| Africa Map Quiz | 0 | - | 5.00 | 2,111,887 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,375 |
| African East Coast | 0 | - | 4.96 | 95,620 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,447 |
| Oceania Map Quiz | 0 | - | 4.98 | 639,159 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,275 |
| Australian Capitals | 0 | - | 4.92 | 62,672 |
| Australia Map Quiz | 0 | - | 4.94 | 343,453 |
| History of Mexico | 0 | - | 4.58 | 15,274 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,804 |
| Arms Exports - United States | 0 | - | 4.75 | 62,095 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,875 |
| U.S. States by Governor | 0 | - | 4.43 | 18,026 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,634 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,619 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,163 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 623,337 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,422 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,139 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,989 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,566 |
