| Prime Ministers of the UK | 0 | - | 4.96 | 435,298 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,661,285 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,730 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,524 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,520 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,307 |
| Countries of the Popes | 0 | - | 4.79 | 127,359 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,335 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,424 |
| Name the English Monarchs | 0 | - | 4.92 | 498,737 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,380 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,158 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,878 |
| The Trojan War | 0 | - | 4.83 | 39,478 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,892 |
| Name that Greek Letter | 0 | - | 4.94 | 321,954 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,760 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,131 |
| Roman Emperors | 0 | - | 4.95 | 118,670 |
| Monty Python Quotes | 0 | - | 4.88 | 42,344 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,548 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,870 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,578 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,548 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,633 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,171 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,600 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,447 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,012 |
| U.S. Vice Presidents | 0 | - | 4.41 | 135,232 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,065 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,657 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,117 |
| Presidential Middle Names | 0 | - | 4.41 | 59,780 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,864 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,827 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,932 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,207 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,821 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,336 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,151 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,686 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,579 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,211 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,592 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,487 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,771 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,147 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,765 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,902 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,528 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,122 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,579 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,604 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,249 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,153 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,975 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,317 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,329 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,674 |
| Countries Bordering France | 0 | - | 4.83 | 400,216 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,390 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,617 |
| Italy by Picture | 0 | - | 4.41 | 30,779 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,891 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,299 |
| Animals in British History | 0 | - | 4.44 | 25,893 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,579 |
| Pope Facts | 0 | - | 4.39 | 31,074 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,055 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,955 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,576 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,174 |
| First Ladies of the United States | 0 | - | 4.28 | 85,298 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,123 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,447 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,026 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,848 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,426 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,707 |
| Every European Country Shape | 0 | - | 4.96 | 200,413 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,199 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,276 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,494 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,199 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,552 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,866 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,594 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,874 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,710 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,396 |
| Counties of Ireland | 0 | - | 4.92 | 193,400 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,241 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,525 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,035 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,511 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 71,781 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,472 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,167 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,131 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,834 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,206 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,620 |
| UK Immigration by Country | 0 | - | 4.94 | 139,850 |
| Arthurian Legend | 0 | - | 4.33 | 25,058 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,440 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 69,402 |
| Most-Visited Countries by the British | 0 | - | 4.63 | 68,162 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,945 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,862 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 95,858 |
| Scotland Trivia | 0 | - | 4.58 | 57,443 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,411 |
| National Founders | 0 | - | 4.40 | 83,680 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,029 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,388 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,825 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 94,926 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,129 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,636 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,963 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,689 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,662 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,533 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,562 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,254 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,009 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,480 |
| Ireland Country Quiz | 0 | - | 4.69 | 134,001 |
| Biggest Cities in Italy | 0 | - | 4.75 | 239,762 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,970 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,571 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,728 |
| Roman Names for Places | 0 | - | 4.62 | 57,931 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,953 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 51,339 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,772 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,051 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,538 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,930 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 63,344 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,657 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,636 |
| British History A-Z #1 | 0 | - | 4.45 | 46,169 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,367 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,399 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,206 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 397,833 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 54,036 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,495 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,666 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,527 |
| The John Adams Presidency | 0 | - | 4.12 | 8,683 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,691 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,788 |
| The American Revolution | 0 | - | 4.52 | 54,091 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,749 |
| Random European Flag to Country | 0 | - | 4.89 | 181,143 |
| History of Russia Quiz | 0 | - | 4.49 | 31,806 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,258 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,751 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,462 |
| All Countries that Once Bordered Germany | 0 | - | 4.33 | 74,649 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,015 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,097 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,433 |
| Ancient Greek Words | 0 | - | 4.92 | 110,850 |
| History of Italy | 0 | - | 4.55 | 31,854 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 94,647 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,119 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,504 |
| Countries Once Held by Sweden | 0 | - | 4.17 | 34,701 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,407 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,012 |
| UK Baby Girl Names by Decade | 0 | - | 4.36 | 159,437 |
| UK Baby Boy Names by Decade | 0 | - | 4.37 | 131,382 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,617 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,076 |
| Name a James Bond Movie A-Z | 0 | - | 4.60 | 10,293 |
| Shakespearean Characters | 0 | - | 4.38 | 37,533 |
| English Royal Consorts | 0 | - | 4.37 | 37,218 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 139,423 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 852,733 |
| The Wales Quiz | 0 | - | 4.47 | 29,032 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,837 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,740 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,736 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,658 |
| The George Washington Presidency | 0 | - | 4.03 | 14,483 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,884 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,237 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,620 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,514 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 218,829 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,747 |
| Europe Map Quiz | 0 | - | 5.00 | 4,736,168 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,787 |
| Random European Countries on a Map | 0 | - | 4.97 | 282,211 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 210,054 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,183 |
