| Prime Ministers of the UK | 0 | - | 4.95 | 443,411 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,258 |
| Canadian Prime Ministers | 0 | - | 4.64 | 58,043 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 201,063 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,710 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,124 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,733,015 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,480 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,447 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,780 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,689 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,974 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,161 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 54,043 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 81,130 |
| Name the Popes Quiz | 0 | - | 4.47 | 139,127 |
| Countries of the Popes | 0 | - | 4.78 | 128,947 |
| National Founders | 0 | - | 4.40 | 84,005 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 429,004 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,607 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,694 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,241 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,147 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 384,001 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 194,113 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,990 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,835 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,743 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,801 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,742 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,531 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,656 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,963 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,774 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 241,035 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,195 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,645 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,246 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,089 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,079 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,731 |
| Russia Country Quiz | 0 | - | 4.83 | 115,507 |
| Countries That Border Russia | 0 | - | 4.98 | 465,080 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,257 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,704 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,596 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,176 |
| UK Immigration by Country | 0 | - | 4.94 | 141,948 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,367 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,358 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 29,110 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,208 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,881 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,757 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,256 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,538 |
| Political Movements by Country | 0 | - | 4.46 | 72,849 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,218 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,177 |
| U.S. Bill of Rights | 0 | - | 4.53 | 34,838 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,884 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,087 |
| Every European Country Shape | 0 | - | 4.96 | 203,348 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,962 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,841 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,330 |
| Countries that Border Poland | 0 | - | 4.99 | 173,401 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,451 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,251 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,344 |
| Name that Greek Letter | 0 | - | 4.93 | 325,403 |
| Countries Italy Declared War On | 0 | - | 4.74 | 49,797 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 76,063 |
| Name the English Monarchs | 0 | - | 4.91 | 507,649 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 77,180 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,132 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,708 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,507 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,797 |
| Presidential Middle Names | 0 | - | 4.42 | 60,837 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,768 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,958 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,668 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,467 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,677 |
| Random European Flag to Country | 0 | - | 4.90 | 184,566 |
| Russian History A-Z | 0 | - | 4.35 | 32,327 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,798 |
| Countries Invaded by the USSR | 0 | - | 4.30 | 94,534 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 105,053 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,238 |
| The Trojan War | 0 | - | 4.83 | 40,120 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,350 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,728 |
| Roman Emperors | 0 | - | 4.95 | 121,516 |
| Monty Python Quotes | 0 | - | 4.89 | 42,637 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,670 |
| Scotland A-Z | 0 | - | 4.73 | 41,511 |
| Pope Facts | 0 | - | 4.39 | 31,438 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,307 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,105 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,607 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,706 |
| Hindu Countries | 0 | - | 4.86 | 50,707 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,618 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,479 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,265 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,689 |
| The American Revolution | 0 | - | 4.52 | 54,399 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,878 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,937 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,248 |
| Random European Countries on a Map | 0 | - | 4.97 | 285,442 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 321,004 |
| History of Russia Quiz | 0 | - | 4.47 | 32,031 |
| Russia by Picture | 0 | - | 4.41 | 20,499 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,975 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 98,017 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,708 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 114,622 |
| Ancient Greek Words | 0 | - | 4.93 | 112,734 |
| History of Italy | 0 | - | 4.55 | 32,199 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,470 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,664 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,867 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,481 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 108,978 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,156 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,327 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,929 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 873,643 |
| The Vietnam War | 0 | - | 4.44 | 35,697 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,849 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,228 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,580 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,915 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,232 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,387 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,809 |
| First Ladies of the United States | 0 | - | 4.28 | 86,039 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,342 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,551 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,392 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,127 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,965 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,237 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,095 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,558 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,270 |
| Most Forested European Countries | 0 | - | 4.80 | 75,769 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,727 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,683 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 218,297 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,589 |
| Albania Country Quiz | 0 | - | 4.54 | 39,324 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,208 |
| Serbia Country Quiz | 0 | - | 4.44 | 35,268 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,416 |
| Geography of the French Empire | 0 | - | 4.45 | 27,241 |
| The French Revolution | 0 | - | 4.47 | 24,175 |
| History of France | 0 | - | 4.61 | 57,765 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,581 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,677 |
| Mythology A-Z | 0 | - | 4.31 | 37,468 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 21,088 |
| Figures from Greek Mythology | 0 | - | 4.92 | 194,430 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 127,132 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 104,211 |
| The Vikings! | 0 | - | 4.46 | 28,432 |
| The Portuguese Empire | 0 | - | 4.58 | 12,120 |
| Arthurian Legend | 0 | - | 4.33 | 25,199 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,640 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,663 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,291 |
| Name the James Bond Movies | 0 | - | 4.56 | 159,676 |
| James Bond Trivia | 0 | - | 4.46 | 39,442 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 390,675 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,861 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,498 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,412 |
| Geography of the British Empire | 0 | - | 4.48 | 39,890 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.32 | 62,699 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,529 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 281,129 |
| History of Iran | 0 | - | 4.66 | 16,444 |
| The Iraq War | 0 | - | 4.47 | 15,722 |
| History of China | 0 | - | 4.35 | 57,708 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,714 |
| History of India | 0 | - | 4.62 | 21,531 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,754 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 101,698 |
| History of South Africa | 0 | - | 4.60 | 17,784 |
| Communist Countries in History | 0 | - | 4.63 | 498,929 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,788 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,646 |
| Australian Capitals | 0 | - | 4.92 | 62,885 |
| Australia A-Z | 0 | - | 4.54 | 50,172 |
| Australia Map Quiz | 0 | - | 4.95 | 346,616 |
| History of Mexico | 0 | - | 4.52 | 15,381 |
