| Prime Ministers of the UK | 0 | - | 4.96 | 435,421 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,662,813 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,668 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,736 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,548 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,701 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,331 |
| Countries of the Popes | 0 | - | 4.79 | 127,379 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,166 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,690 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,585 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,416 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,892 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,237 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,556 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,630 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,246 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,917 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,245 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,803 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,352 |
| Ancient Greek Words | 0 | - | 4.92 | 110,876 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,270 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,013 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,515 |
| U.S. Vice Presidents | 0 | - | 4.41 | 135,279 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,090 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,680 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,130 |
| Presidential Middle Names | 0 | - | 4.41 | 59,795 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,840 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,946 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,781 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,215 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,210 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,779 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,169 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,620 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,643 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,297 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,182 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,008 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,334 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,338 |
| Pope Facts | 0 | - | 4.39 | 31,082 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,775 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,594 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,082 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,972 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,583 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,629 |
| Biggest British Empire Countries | 0 | - | 4.73 | 98,905 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,552 |
| Name the English Monarchs | 0 | - | 4.92 | 498,868 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,436 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,048 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,391 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,175 |
| First Ladies of the United States | 0 | - | 4.28 | 85,306 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,831 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,127 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,476 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,033 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,852 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,469 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,708 |
| Every European Country Shape | 0 | - | 4.96 | 200,457 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 94,968 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,215 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,166 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,335 |
| The Trojan War | 0 | - | 4.83 | 39,484 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,048 |
| Name that Greek Letter | 0 | - | 4.94 | 322,012 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,813 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,145 |
| Roman Emperors | 0 | - | 4.95 | 118,725 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,713 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,488 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,224 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,642 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,233 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,623 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,088 |
| National Founders | 0 | - | 4.40 | 83,681 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,502 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,667 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,531 |
| The John Adams Presidency | 0 | - | 4.12 | 8,686 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,693 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,789 |
| The American Revolution | 0 | - | 4.52 | 54,100 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,644 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,679 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,289 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,478 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 97,362 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,084 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,635 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 94,702 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,463 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,993 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,791 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,107 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,498 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,539 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,525 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,052 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 853,044 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,841 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,749 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 54,044 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,269 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,910 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,678 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,728 |
| The George Washington Presidency | 0 | - | 4.03 | 14,483 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,888 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,241 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,622 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,535 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 218,899 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,801 |
| Europe Map Quiz | 0 | - | 5.00 | 4,737,326 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,830 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,795 |
| Random European Countries on a Map | 0 | - | 4.97 | 282,273 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,953 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,569 |
| History of Russia Quiz | 0 | - | 4.49 | 31,811 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,007 |
| History of Italy | 0 | - | 4.55 | 31,858 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,484 |
| Roman History by Picture | 0 | - | 4.46 | 26,363 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,925 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,515 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,019 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,627 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,157 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,419 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,227 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,514 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,923 |
| Communist Countries in History | 0 | - | 4.63 | 493,115 |
| History of India | 0 | - | 4.61 | 21,311 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,228 |
| Africa Map Quiz | 0 | - | 5.00 | 2,106,709 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,783 |
| History of South Africa | 0 | - | 4.60 | 17,622 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,530 |
| Australian Capitals | 0 | - | 4.92 | 62,612 |
| History of Mexico | 0 | - | 4.58 | 15,244 |
| United States Map Quiz | 0 | - | 4.98 | 4,144,671 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,783 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 620,056 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,378 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,098 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,496 |
| U.S. President Scramble | 0 | - | 4.40 | 116,299 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,045 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,731 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,774 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,714 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,313 |
| Official European Union Languages | 0 | - | 4.97 | 237,216 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,063 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,754 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,339 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 316,145 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 210,172 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,643 |
| History of Austria | 0 | - | 4.70 | 17,775 |
| Geography of the French Empire | 0 | - | 4.45 | 26,963 |
| The French Revolution | 0 | - | 4.46 | 23,819 |
| History of France | 0 | - | 4.59 | 56,320 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,403 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,444 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,819 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,801 |
| Mythology A-Z | 0 | - | 4.31 | 37,046 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,685 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,349 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,047 |
| Byzantine History | 0 | - | 4.91 | 28,660 |
| History of The Netherlands | 0 | - | 4.46 | 17,339 |
| The Vikings! | 0 | - | 4.46 | 28,261 |
| The Portuguese Empire | 0 | - | 4.54 | 12,005 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,342 |
| Arthurian Legend | 0 | - | 4.33 | 25,060 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,226 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,956 |
| Geography of the British Empire | 0 | - | 4.48 | 39,529 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,205 |
| Medieval English History | 0 | - | 4.53 | 43,350 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,564 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,266 |
| Asia Map Quiz | 0 | - | 4.99 | 908,492 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,565 |
| History of Iran | 0 | - | 4.65 | 16,284 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 17,051 |
