| Prime Ministers of the UK | 0 | - | 4.95 | 443,234 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,731,721 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,245 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,681 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,063 |
| Name the Popes Quiz | 0 | - | 4.47 | 139,103 |
| Countries of the Popes | 0 | - | 4.78 | 128,913 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,594 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 76,026 |
| Name the English Monarchs | 0 | - | 4.91 | 507,461 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,759 |
| Canadian Prime Ministers | 0 | - | 4.64 | 58,020 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 105,001 |
| The Trojan War | 0 | - | 4.83 | 40,090 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,080 |
| Name that Greek Letter | 0 | - | 4.93 | 325,336 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,261 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,704 |
| Roman Emperors | 0 | - | 4.95 | 121,459 |
| Monty Python Quotes | 0 | - | 4.89 | 42,628 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,635 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,145 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,974 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 54,034 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 81,095 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,921 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,568 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,453 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,145 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,679 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,484 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,768 |
| Presidential Middle Names | 0 | - | 4.42 | 60,812 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,932 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,755 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,944 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,661 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,772 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,513 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 114,524 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,505 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,629 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,886 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,312 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,770 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,995 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,260 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 194,052 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,974 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,698 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,752 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,582 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,113 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,033 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,036 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,743 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,712 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,237 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,696 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,971 |
| Countries Bordering France | 0 | - | 4.83 | 405,399 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,281 |
| Italy by Picture | 0 | - | 4.41 | 31,119 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 127,079 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,315 |
| Animals in British History | 0 | - | 4.43 | 26,121 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 29,098 |
| Pope Facts | 0 | - | 4.39 | 31,430 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,174 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,201 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,383 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,799 |
| First Ladies of the United States | 0 | - | 4.28 | 86,031 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,339 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,543 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,387 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,123 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.32 | 59,662 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,031 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,962 |
| Every European Country Shape | 0 | - | 4.96 | 203,284 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,832 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,442 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 201,004 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,432 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,290 |
| Countries Bordering Austria | 0 | - | 4.97 | 119,058 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,233 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,571 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 99,178 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 146,099 |
| Counties of Ireland | 0 | - | 4.92 | 197,721 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,247 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,379 |
| Countries Italy Declared War On | 0 | - | 4.74 | 48,301 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,684 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,564 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,812 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 84,173 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,139 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,398 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,035 |
| UK Immigration by Country | 0 | - | 4.94 | 141,915 |
| Arthurian Legend | 0 | - | 4.33 | 25,194 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,289 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 70,407 |
| Most-Visited Countries by the British | 0 | - | 4.64 | 69,128 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,689 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,427 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,431 |
| Scotland Trivia | 0 | - | 4.58 | 57,796 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,173 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,720 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,232 |
| National Founders | 0 | - | 4.40 | 84,003 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,117 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,615 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,420 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,629 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,654 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,613 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,819 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,707 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,515 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,673 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.54 | 49,690 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,493 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,894 |
| Ireland Country Quiz | 0 | - | 4.70 | 135,338 |
| Biggest Cities in Italy | 0 | - | 4.78 | 242,776 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,301 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,401 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,270 |
| Roman Names for Places | 0 | - | 4.62 | 58,795 |
| Countries Closest to Iceland | 0 | - | 4.90 | 74,306 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 52,281 |
| Countries that Beat Portugal | 0 | - | 4.86 | 60,011 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,335 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,445 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,211 |
| Countries that Beat the United Kingdom | 0 | - | 4.53 | 64,026 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,899 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 32,006 |
| British History A-Z #1 | 0 | - | 4.45 | 47,345 |
| Houses of British Monarchs | 0 | - | 4.54 | 66,034 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 61,159 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,162 |
| 2026–2027 Football League Teams | 0 | - | 4.94 | 408,166 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,789 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,778 |
| The John Adams Presidency | 0 | - | 4.12 | 8,799 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,788 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,941 |
| The American Revolution | 0 | - | 4.52 | 54,394 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,119 |
| Random European Flag to Country | 0 | - | 4.90 | 184,498 |
| History of Russia Quiz | 0 | - | 4.47 | 32,028 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,936 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,225 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,996 |
| All Countries that Once Bordered Germany | 0 | - | 4.33 | 75,264 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,262 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,538 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,597 |
| Ancient Greek Words | 0 | - | 4.93 | 112,689 |
| History of Italy | 0 | - | 4.55 | 32,186 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.89 | 97,727 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,278 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,856 |
| Countries Once Held by Sweden | 0 | - | 4.18 | 34,875 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,309 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,470 |
| UK Baby Girl Names by Decade | 0 | - | 4.38 | 162,056 |
| UK Baby Boy Names by Decade | 0 | - | 4.37 | 133,365 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,150 |
| Satellite Images - The United Kingdom | 0 | - | 4.41 | 28,226 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,204 |
| Name a James Bond Movie A-Z | 0 | - | 4.60 | 10,515 |
| Shakespearean Characters | 0 | - | 4.38 | 37,771 |
| English Royal Consorts | 0 | - | 4.38 | 37,572 |
| Top 4 in English Football, 1888–2026 | 0 | - | 4.92 | 143,859 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 873,274 |
| The Wales Quiz | 0 | - | 4.46 | 29,286 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,102 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,594 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,834 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.38 | 24,091 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,435 |
| The George Washington Presidency | 0 | - | 4.03 | 14,622 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 17,003 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,398 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,777 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,671 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,786 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,856 |
| Europe Map Quiz | 0 | - | 5.00 | 4,793,904 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,253 |
| Random European Countries on a Map | 0 | - | 4.97 | 285,391 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 320,927 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,497 |
