| Prime Ministers of the UK | 0 | - | 4.95 | 438,919 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,698,403 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,343 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,938 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,998 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,129 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,189 |
| Countries of the Popes | 0 | - | 4.79 | 128,108 |
| Cities of Ireland | 0 | - | 4.51 | 50,653 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,529 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,059 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,468 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,794 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,780 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,438 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,564 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,958 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,920 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,165 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,612 |
| Ancient Greek Words | 0 | - | 4.93 | 111,593 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,086 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,066 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,450 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,723 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,483 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,798 |
| Presidential Middle Names | 0 | - | 4.41 | 60,243 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,336 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,595 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,986 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,432 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,791 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,298 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,221 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 81,745 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,663 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,992 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,875 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,579 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,735 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,004 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,313 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,453 |
| Pope Facts | 0 | - | 4.39 | 31,243 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,854 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,682 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,855 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,593 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,876 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,596 |
| Name the English Monarchs | 0 | - | 4.91 | 502,608 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,737 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,222 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,564 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,532 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,261 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,258 |
| First Ladies of the United States | 0 | - | 4.28 | 85,637 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,954 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,228 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,093 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,191 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,965 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,789 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,828 |
| Every European Country Shape | 0 | - | 4.96 | 201,595 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,013 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,490 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,189 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,495 |
| The Trojan War | 0 | - | 4.83 | 39,723 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,386 |
| Name that Greek Letter | 0 | - | 4.93 | 323,441 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,833 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,524 |
| Roman Emperors | 0 | - | 4.95 | 120,030 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 102,885 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,107 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,851 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,273 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,237 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,372 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,397 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,074 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,271 |
| National Founders | 0 | - | 4.40 | 83,838 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,635 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,730 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,650 |
| The John Adams Presidency | 0 | - | 4.12 | 8,748 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,744 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,854 |
| The American Revolution | 0 | - | 4.52 | 54,255 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,471 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,807 |
| Flags of Countries That Border France | 0 | - | 4.88 | 122,898 |
| Flags of Countries that Border Germany | 0 | - | 4.85 | 97,026 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 98,704 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,468 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,963 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 95,973 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,873 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,195 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,256 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,863 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,252 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,706 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,349 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 859,444 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,947 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,168 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,437 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,325 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,073 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,810 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,940 |
| The George Washington Presidency | 0 | - | 4.03 | 14,547 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,935 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,323 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,674 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,008 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,780 |
| Category Elimination - U.S. States #2 | 0 | - | 4.83 | 134,194 |
| Europe Map Quiz | 0 | - | 5.00 | 4,762,707 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,500 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,979 |
| Random European Countries on a Map | 0 | - | 4.97 | 283,469 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 318,519 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,361 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,548 |
| History of Russia Quiz | 0 | - | 4.47 | 31,917 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,299 |
| History of Italy | 0 | - | 4.55 | 31,973 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,602 |
| Roman History by Picture | 0 | - | 4.46 | 26,465 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,867 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,659 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,235 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,861 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,217 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,661 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,854 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,821 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,252 |
| Communist Countries in History | 0 | - | 4.63 | 495,691 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,265 |
| History of India | 0 | - | 4.62 | 21,423 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,444 |
| Africa Map Quiz | 0 | - | 5.00 | 2,117,774 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,200 |
| History of South Africa | 0 | - | 4.60 | 17,688 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,241 |
| Australian Capitals | 0 | - | 4.92 | 62,721 |
| History of Mexico | 0 | - | 4.58 | 15,309 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,347 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,979 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 627,572 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,500 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,192 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,673 |
| U.S. President Scramble | 0 | - | 4.40 | 116,772 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,186 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,885 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,260 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,119 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,644 |
| Official European Union Languages | 0 | - | 4.97 | 238,496 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,836 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,167 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,188 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 213,391 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,017 |
| History of Austria | 0 | - | 4.70 | 17,861 |
| Geography of the French Empire | 0 | - | 4.45 | 27,059 |
| The French Revolution | 0 | - | 4.47 | 23,929 |
| History of France | 0 | - | 4.59 | 56,973 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,612 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,993 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,913 |
| Mythology A-Z | 0 | - | 4.31 | 37,217 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,785 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,936 |
| Can You Name All Of One Direction's Songs? | 0 | - | 4.51 | 96,448 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,327 |
| Byzantine History | 0 | - | 4.91 | 28,867 |
| Byzantine Emperors | 0 | - | 4.92 | 14,084 |
| History of The Netherlands | 0 | - | 4.46 | 17,433 |
| The Vikings! | 0 | - | 4.46 | 28,343 |
| The Portuguese Empire | 0 | - | 4.58 | 12,064 |
| Arthurian Legend | 0 | - | 4.33 | 25,109 |
| Biggest British Empire Countries | 0 | - | 4.74 | 99,972 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,350 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,464 |
| Geography of the British Empire | 0 | - | 4.48 | 39,671 |
| People Buried at Westminster Abbey | 0 | - | 4.67 | 14,252 |
| Medieval English History | 0 | - | 4.53 | 43,507 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.41 | 51,745 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,609 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,189 |
