| Prime Ministers of the UK | 0 | - | 4.95 | 438,188 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,690,983 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,230 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,896 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,885 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,036 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,975 |
| Countries of the Popes | 0 | - | 4.79 | 127,960 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,451 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,125 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,248 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,925 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,370 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,976 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,746 |
| Countries "Ruled" by King Charles III | 0 | - | 4.77 | 82,715 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,091 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,220 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,908 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,798 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,804 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,556 |
| Ancient Greek Words | 0 | - | 4.93 | 111,429 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,524 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,058 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,253 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,582 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,316 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,654 |
| Presidential Middle Names | 0 | - | 4.41 | 60,148 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,224 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,495 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,954 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,376 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,474 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,185 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,985 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 78,812 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,388 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,787 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,691 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,471 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,653 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,914 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,423 |
| Pope Facts | 0 | - | 4.39 | 31,216 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,843 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,665 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,679 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,507 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,829 |
| Biggest British Empire Countries | 0 | - | 4.74 | 99,835 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,340 |
| Name the English Monarchs | 0 | - | 4.91 | 501,830 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,089 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,477 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,509 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,112 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,245 |
| First Ladies of the United States | 0 | - | 4.28 | 85,559 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,931 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,209 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,981 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,172 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,942 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,597 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,805 |
| Every European Country Shape | 0 | - | 4.96 | 201,421 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,825 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,430 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,990 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,456 |
| The Trojan War | 0 | - | 4.83 | 39,671 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,488 |
| Name that Greek Letter | 0 | - | 4.93 | 323,215 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,634 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,448 |
| Roman Emperors | 0 | - | 4.95 | 119,737 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 102,632 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,987 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,648 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,155 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,350 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,987 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,708 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,236 |
| National Founders | 0 | - | 4.40 | 83,804 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,609 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,717 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,629 |
| The John Adams Presidency | 0 | - | 4.12 | 8,738 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,730 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,840 |
| The American Revolution | 0 | - | 4.52 | 54,224 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,317 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,776 |
| Flags of Countries That Border France | 0 | - | 4.88 | 122,763 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,907 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 98,434 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,412 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,655 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 95,747 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,787 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,157 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,163 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,697 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,839 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,524 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,305 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 858,147 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,927 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,105 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,373 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,314 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,067 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,769 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,714 |
| The George Washington Presidency | 0 | - | 4.03 | 14,539 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,922 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,310 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,662 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,904 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,470 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,941 |
| Europe Map Quiz | 0 | - | 5.00 | 4,757,661 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,055 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,940 |
| Random European Countries on a Map | 0 | - | 4.97 | 283,185 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 317,720 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,157 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,342 |
| History of Russia Quiz | 0 | - | 4.49 | 31,896 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,254 |
| History of Italy | 0 | - | 4.55 | 31,950 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,583 |
| Roman History by Picture | 0 | - | 4.46 | 26,444 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,646 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,633 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,184 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,810 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,204 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,626 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,750 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,789 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,194 |
| Communist Countries in History | 0 | - | 4.63 | 495,133 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,259 |
| History of India | 0 | - | 4.62 | 21,406 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,409 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,611 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,976 |
| History of South Africa | 0 | - | 4.60 | 17,666 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,114 |
| Australian Capitals | 0 | - | 4.92 | 62,707 |
| History of Mexico | 0 | - | 4.58 | 15,297 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,977 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,939 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 626,024 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,481 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,176 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,644 |
| U.S. President Scramble | 0 | - | 4.40 | 116,686 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,157 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,853 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,177 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,037 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,577 |
| Official European Union Languages | 0 | - | 4.97 | 238,250 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,689 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,701 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,008 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,552 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,953 |
| History of Austria | 0 | - | 4.70 | 17,844 |
| Geography of the French Empire | 0 | - | 4.45 | 27,038 |
| The French Revolution | 0 | - | 4.46 | 23,916 |
| History of France | 0 | - | 4.59 | 56,889 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,465 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,383 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,953 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,886 |
| Mythology A-Z | 0 | - | 4.31 | 37,190 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,763 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,579 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,272 |
| Byzantine History | 0 | - | 4.91 | 28,764 |
| History of The Netherlands | 0 | - | 4.46 | 17,418 |
| The Vikings! | 0 | - | 4.46 | 28,331 |
| The Portuguese Empire | 0 | - | 4.58 | 12,054 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,455 |
| Arthurian Legend | 0 | - | 4.33 | 25,101 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,316 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,356 |
| Geography of the British Empire | 0 | - | 4.48 | 39,638 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,243 |
| Medieval English History | 0 | - | 4.53 | 43,480 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,602 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,218 |
| Asia Map Quiz | 0 | - | 4.99 | 915,247 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,807 |
