| Prime Ministers of the UK | 0 | - | 4.96 | 434,509 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,652,883 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,674 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,412 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,222 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,112 |
| Countries of the Popes | 0 | - | 4.79 | 127,181 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,305 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,224 |
| Name the English Monarchs | 0 | - | 4.92 | 497,772 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,226 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,031 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,515 |
| The Trojan War | 0 | - | 4.83 | 39,422 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,729 |
| Name that Greek Letter | 0 | - | 4.94 | 321,606 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,500 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,034 |
| Roman Emperors | 0 | - | 4.95 | 118,427 |
| Monty Python Quotes | 0 | - | 4.88 | 42,320 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,199 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,756 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,229 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,503 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,487 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,587 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,437 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,353 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,996 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,886 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,922 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,452 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,986 |
| Presidential Middle Names | 0 | - | 4.41 | 59,688 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,504 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,716 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,799 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,161 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,316 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,294 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,430 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,608 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,079 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,093 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,572 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,288 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,732 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,783 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,655 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,679 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,315 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,901 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,386 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,351 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,077 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,987 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,800 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,219 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,282 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,627 |
| Countries Bordering France | 0 | - | 4.83 | 398,694 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,963 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,513 |
| Italy by Picture | 0 | - | 4.41 | 30,729 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,686 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,058 |
| Animals in British History | 0 | - | 4.44 | 25,867 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,535 |
| Pope Facts | 0 | - | 4.39 | 31,034 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,840 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,846 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,508 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,162 |
| First Ladies of the United States | 0 | - | 4.28 | 85,230 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,109 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,261 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,998 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,829 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,220 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,681 |
| Every European Country Shape | 0 | - | 4.96 | 200,094 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,130 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,120 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,207 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,095 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,507 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,754 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,512 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,788 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,248 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,131 |
| Counties of Ireland | 0 | - | 4.92 | 192,988 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,038 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,431 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,935 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,274 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 71,719 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,341 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,005 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,756 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,249 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,468 |
| UK Immigration by Country | 0 | - | 4.94 | 139,582 |
| Arthurian Legend | 0 | - | 4.33 | 25,049 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,101 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 69,303 |
| Most-Visited Countries by the British | 0 | - | 4.63 | 68,068 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,558 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,700 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,747 |
| Scotland Trivia | 0 | - | 4.58 | 57,403 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,209 |
| National Founders | 0 | - | 4.40 | 83,644 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,943 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,374 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,812 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,675 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,892 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,448 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,806 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,579 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,189 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,338 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,442 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.53 | 49,205 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,874 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,425 |
| Ireland Country Quiz | 0 | - | 4.69 | 133,863 |
| Biggest Cities in Italy | 0 | - | 4.75 | 239,399 |
| Countries that Beat Italy | 0 | - | 4.85 | 53,859 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,527 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,658 |
| Roman Names for Places | 0 | - | 4.62 | 57,862 |
| Countries Closest to Iceland | 0 | - | 4.89 | 72,827 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 51,241 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,654 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,018 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,449 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,818 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 63,276 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,409 |
| British History A-Z #1 | 0 | - | 4.45 | 45,798 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,289 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,310 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,081 |
| 2025–2026 Football League Teams | 0 | - | 4.93 | 397,058 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,928 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,457 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,658 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,491 |
| The John Adams Presidency | 0 | - | 4.12 | 8,675 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,681 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,770 |
| The American Revolution | 0 | - | 4.52 | 54,049 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,265 |
| Random European Flag to Country | 0 | - | 4.89 | 180,865 |
| History of Russia Quiz | 0 | - | 4.49 | 31,788 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,123 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,666 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,343 |
| All Countries that Once Bordered Germany | 0 | - | 4.33 | 74,581 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,981 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,838 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,420 |
| Ancient Greek Words | 0 | - | 4.92 | 110,652 |
| History of Italy | 0 | - | 4.55 | 31,811 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,271 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,116 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,477 |
| Countries Once Held by Sweden | 0 | - | 4.17 | 34,686 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,332 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,976 |
| UK Baby Girl Names by Decade | 0 | - | 4.36 | 159,155 |
| UK Baby Boy Names by Decade | 0 | - | 4.37 | 130,965 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,379 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,882 |
| Name a James Bond Movie A-Z | 0 | - | 4.60 | 10,266 |
| Shakespearean Characters | 0 | - | 4.38 | 37,501 |
| English Royal Consorts | 0 | - | 4.37 | 37,157 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,602 |
| Top 4 in English Football, 1888–2025 | 0 | - | 4.92 | 139,067 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 851,163 |
| The Wales Quiz | 0 | - | 4.47 | 29,002 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,817 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,670 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,484 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,323 |
| The George Washington Presidency | 0 | - | 4.03 | 14,473 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,868 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,206 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,608 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,383 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,470 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,447 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,290 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,737 |
| Random European Countries on a Map | 0 | - | 4.97 | 281,915 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,359 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,012 |
| Arms Exports - Russia | 0 | - | 4.48 | 24,763 |
