| Prime Ministers of the UK | 0 | - | 4.95 | 440,189 |
| Prime Ministers of Australia | 0 | - | 4.50 | 32,014 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,653 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,844 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,205 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,868 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,027 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,709,417 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,040 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,968 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,278 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,671 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,690 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,856 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,550 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,449 |
| Countries of the Popes | 0 | - | 4.79 | 128,363 |
| National Founders | 0 | - | 4.40 | 83,890 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,115 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,804 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,555 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,141 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,100 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,367 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,686 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,211 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,286 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,247 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,707 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,768 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,653 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,495 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,758 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,891 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,777 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,565 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,133 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,350 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,164 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,824 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,869 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,560 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,502 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,224 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,908 |
| Political Movements by Country | 0 | - | 4.46 | 72,626 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,040 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,108 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,945 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,831 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,220 |
| Every European Country Shape | 0 | - | 4.96 | 202,266 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,607 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,591 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,401 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,306 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,152 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,579 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,429 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,289 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,538 |
| UK Immigration by Country | 0 | - | 4.94 | 141,187 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,222 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,403 |
| Name the English Monarchs | 0 | - | 4.91 | 504,100 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,501 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,609 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,116 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,779 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,449 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,831 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,717 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,558 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,407 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,540 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,167 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,126 |
| The Trojan War | 0 | - | 4.83 | 39,807 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,039 |
| Name that Greek Letter | 0 | - | 4.93 | 324,213 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,280 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,663 |
| Roman Emperors | 0 | - | 4.95 | 120,427 |
| Monty Python Quotes | 0 | - | 4.89 | 42,512 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,722 |
| Pope Facts | 0 | - | 4.39 | 31,299 |
| Hindu Countries | 0 | - | 4.86 | 50,316 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,408 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,949 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,742 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 94,026 |
| Presidential Middle Names | 0 | - | 4.41 | 60,425 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,462 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,675 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,058 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,492 |
| The American Revolution | 0 | - | 4.52 | 54,295 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,718 |
| Random European Flag to Country | 0 | - | 4.89 | 183,012 |
| History of Russia Quiz | 0 | - | 4.47 | 31,957 |
| Russia by Picture | 0 | - | 4.41 | 20,434 |
| Flags of Countries That Border France | 0 | - | 4.88 | 123,411 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,031 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,519 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,994 |
| Ancient Greek Words | 0 | - | 4.93 | 111,934 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,548 |
| History of Italy | 0 | - | 4.55 | 32,061 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,026 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,723 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,301 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,436 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,965 |
| Animals in British History | 0 | - | 4.43 | 26,044 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 862,151 |
| Scotland A-Z | 0 | - | 4.73 | 41,341 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,917 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,985 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,299 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,227 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,558 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,421 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,231 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,430 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,656 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,927 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,218 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,058 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,335 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 319,411 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,687 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,657 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,696 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,247 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,133 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,245 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 388,790 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,727 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,990 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,343 |
| Countries "Ruled" by King Charles III | 0 | - | 4.77 | 82,783 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,740 |
| The Vietnam War | 0 | - | 4.44 | 35,582 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,379 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,634 |
| Communist Countries in History | 0 | - | 4.63 | 496,635 |
| History of South Africa | 0 | - | 4.60 | 17,723 |
| Oceania Map Quiz | 0 | - | 4.98 | 654,105 |
| Australian Capitals | 0 | - | 4.92 | 62,759 |
| History of Mexico | 0 | - | 4.58 | 15,339 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,900 |
| American Political Words | 0 | - | 4.39 | 23,439 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,180 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,541 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,875 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,522 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,281 |
| First Ladies of the United States | 0 | - | 4.28 | 85,752 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,983 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,251 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,284 |
| U.S. President Scramble | 0 | - | 4.40 | 117,067 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,238 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 24,003 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,229 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,952 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,858 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,344 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,793 |
| Official European Union Languages | 0 | - | 4.97 | 238,968 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,157 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,152 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,398 |
| Most Forested European Countries | 0 | - | 4.80 | 75,469 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,666 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,500 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,550 |
| History of Austria | 0 | - | 4.70 | 17,911 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,242 |
| Geography of the French Empire | 0 | - | 4.45 | 27,157 |
| The French Revolution | 0 | - | 4.47 | 24,066 |
| History of France | 0 | - | 4.59 | 57,292 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,391 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,007 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,083 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,951 |
| Mythology A-Z | 0 | - | 4.31 | 37,295 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,847 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,782 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,279 |
| Byzantine History | 0 | - | 4.91 | 28,920 |
| Byzantine Emperors | 0 | - | 4.92 | 14,379 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,239 |
| History of The Netherlands | 0 | - | 4.46 | 17,489 |
| The Vikings! | 0 | - | 4.46 | 28,371 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| Arthurian Legend | 0 | - | 4.33 | 25,132 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,210 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,429 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 70,011 |
