| U.S. Presidents Quiz | 0 | - | 5.00 | 3,702,044 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,425 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,963 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,079 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,190 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,283 |
| Countries of the Popes | 0 | - | 4.79 | 128,192 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,565 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,291 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,515 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,154 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,533 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,228 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,806 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,762 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,704 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,994 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,007 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,011 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,350 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,645 |
| Ancient Greek Words | 0 | - | 4.93 | 111,719 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,425 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,081 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,551 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,798 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,569 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 93,868 |
| Presidential Middle Names | 0 | - | 4.41 | 60,320 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,389 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,628 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,017 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,454 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,979 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,355 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,515 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 82,498 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,818 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,128 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,984 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,669 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,788 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,089 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,473 |
| Pope Facts | 0 | - | 4.39 | 31,264 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,865 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,694 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,943 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,662 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,903 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,064 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,747 |
| Name the English Monarchs | 0 | - | 4.91 | 503,175 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,316 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,617 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,543 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,330 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,267 |
| First Ladies of the United States | 0 | - | 4.28 | 85,681 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,962 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,234 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,146 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,218 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,981 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,885 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,839 |
| Every European Country Shape | 0 | - | 4.96 | 201,927 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,172 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,518 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,310 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,521 |
| The Trojan War | 0 | - | 4.83 | 39,754 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,995 |
| Name that Greek Letter | 0 | - | 4.93 | 323,936 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,973 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,574 |
| Roman Emperors | 0 | - | 4.95 | 120,173 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,023 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,181 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,933 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,346 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,381 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,139 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 51,775 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,295 |
| National Founders | 0 | - | 4.40 | 83,853 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,654 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,737 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,655 |
| The John Adams Presidency | 0 | - | 4.12 | 8,751 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,744 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,859 |
| The American Revolution | 0 | - | 4.52 | 54,265 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,587 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,837 |
| Flags of Countries That Border France | 0 | - | 4.88 | 123,213 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,342 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 98,897 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,499 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,160 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,171 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,932 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,233 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,320 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,949 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,473 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,839 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,405 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 860,294 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,956 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,218 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,488 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,339 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,082 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,816 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,102 |
| The George Washington Presidency | 0 | - | 4.03 | 14,550 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,939 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,329 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,691 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,071 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,962 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,338 |
| Europe Map Quiz | 0 | - | 5.00 | 4,765,734 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,872 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,010 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,006 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 318,896 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,521 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,677 |
| History of Russia Quiz | 0 | - | 4.47 | 31,937 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,325 |
| History of Italy | 0 | - | 4.55 | 32,006 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,616 |
| Roman History by Picture | 0 | - | 4.46 | 26,474 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,016 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,681 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,257 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,900 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,232 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,682 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,886 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,836 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,289 |
| Communist Countries in History | 0 | - | 4.63 | 496,020 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,267 |
| History of India | 0 | - | 4.62 | 21,440 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,472 |
| Africa Map Quiz | 0 | - | 5.00 | 2,119,136 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,360 |
| History of South Africa | 0 | - | 4.60 | 17,699 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,912 |
| Australian Capitals | 0 | - | 4.92 | 62,734 |
| History of Mexico | 0 | - | 4.58 | 15,319 |
| United States Map Quiz | 0 | - | 4.98 | 4,160,526 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,001 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 628,450 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,513 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,201 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,705 |
| U.S. President Scramble | 0 | - | 4.40 | 116,829 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,201 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,857 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,915 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,303 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,201 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,698 |
| Official European Union Languages | 0 | - | 4.97 | 238,649 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,952 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,454 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,329 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 213,901 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,072 |
| History of Austria | 0 | - | 4.70 | 17,872 |
| Geography of the French Empire | 0 | - | 4.45 | 27,108 |
| The French Revolution | 0 | - | 4.47 | 24,010 |
| History of France | 0 | - | 4.59 | 57,097 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,749 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,030 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,931 |
| Mythology A-Z | 0 | - | 4.31 | 37,240 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,802 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,157 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,362 |
| Byzantine History | 0 | - | 4.91 | 28,888 |
| Byzantine Emperors | 0 | - | 4.92 | 14,245 |
| History of The Netherlands | 0 | - | 4.46 | 17,446 |
| The Vikings! | 0 | - | 4.46 | 28,354 |
| The Portuguese Empire | 0 | - | 4.58 | 12,071 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,482 |
| Arthurian Legend | 0 | - | 4.33 | 25,124 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,366 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,558 |
| Geography of the British Empire | 0 | - | 4.48 | 39,702 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,262 |
| Medieval English History | 0 | - | 4.53 | 43,541 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,613 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,738 |
| Asia Map Quiz | 0 | - | 4.99 | 917,624 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,351 |
