| Countries of the Soviet Union | 0 | - | 4.98 | 193,848 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,439 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,668 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,638 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,241 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,685 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,048 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,477 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,751 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,360 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,654,839 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,160 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,268 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,113 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,294 |
| Arms Exports - Russia | 0 | - | 4.48 | 24,764 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,289 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,782 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,506 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,518 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,165 |
| Countries of the Popes | 0 | - | 4.79 | 127,228 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,267 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,787 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,593 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,618 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,925 |
| National Founders | 0 | - | 4.40 | 83,652 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,875 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,680 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,457 |
| Flags of Countries That Border Russia | 0 | - | 4.70 | 70,178 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,314 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,000 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,575 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,862 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,907 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,866 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,366 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,343 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,739 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,883 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,529 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,670 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,953 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,430 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,421 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,118 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,022 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,670 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,956 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,890 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,172 |
| UK Immigration by Country | 0 | - | 4.94 | 139,648 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,153 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,093 |
| Name the English Monarchs | 0 | - | 4.92 | 497,947 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,542 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,278 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,257 |
| Political Movements by Country | 0 | - | 4.46 | 72,262 |
| Hindu Countries | 0 | - | 4.86 | 49,587 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,182 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,960 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,377 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,264 |
| Every European Country Shape | 0 | - | 4.96 | 200,188 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,722 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,200 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,958 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,976 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,025 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,498 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,334 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,551 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,641 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,523 |
| The Trojan War | 0 | - | 4.83 | 39,430 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,974 |
| Name that Greek Letter | 0 | - | 4.94 | 321,686 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,543 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,053 |
| Roman Emperors | 0 | - | 4.95 | 118,495 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,283 |
| Monty Python Quotes | 0 | - | 4.88 | 42,325 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,317 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,546 |
| Pope Facts | 0 | - | 4.39 | 31,043 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,360 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,977 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,947 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,957 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,509 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,005 |
| Presidential Middle Names | 0 | - | 4.41 | 59,712 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,744 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,388 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,823 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,746 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,176 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,427 |
| The American Revolution | 0 | - | 4.52 | 54,058 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,564 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,519 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,148 |
| Random European Countries on a Map | 0 | - | 4.97 | 281,980 |
| Random European Flag to Country | 0 | - | 4.89 | 180,918 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,151 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,683 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,372 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,206 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,310 |
| Ancient Greek Words | 0 | - | 4.92 | 110,708 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,383 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,581 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,686 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,148 |
| Shakespeare's Plays Quiz | 0 | - | 4.38 | 385,756 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,394 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,121 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,600 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 851,480 |
| Scotland A-Z | 0 | - | 4.73 | 41,048 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,820 |
| The Vietnam War | 0 | - | 4.43 | 35,297 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,683 |
| Flags of WW1 | 0 | - | 4.60 | 37,945 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,948 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,414 |
| American Political Words | 0 | - | 4.39 | 23,341 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,073 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,463 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,807 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,168 |
| First Ladies of the United States | 0 | - | 4.28 | 85,246 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,816 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,112 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,300 |
| U.S. President Scramble | 0 | - | 4.40 | 116,207 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,002 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,837 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,027 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,696 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,689 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,595 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,366 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,153 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,748 |
| Most Forested European Countries | 0 | - | 4.80 | 74,912 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,534 |
| European Cities with the Biggest Economies | 0 | - | 4.62 | 38,186 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,161 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 315,748 |
| History of Russia Quiz | 0 | - | 4.49 | 31,795 |
| Biggest French Empire Countries | 0 | - | 4.49 | 64,897 |
| History of France | 0 | - | 4.59 | 56,057 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,934 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,188 |
| Mythology A-Z | 0 | - | 4.31 | 37,003 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,969 |
| History of Italy | 0 | - | 4.55 | 31,817 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,739 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 71,735 |
| Byzantine History | 0 | - | 4.91 | 28,621 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,478 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,483 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,982 |
| Arthurian Legend | 0 | - | 4.33 | 25,050 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,402 |
| Biggest British Empire Countries | 0 | - | 4.75 | 95,243 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,048 |
| Name the James Bond Movies | 0 | - | 4.56 | 157,461 |
| James Bond Trivia | 0 | - | 4.46 | 39,143 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,180 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,784 |
| Geography of the British Empire | 0 | - | 4.48 | 39,474 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,528 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,034 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,810 |
| The Iraq War | 0 | - | 4.47 | 15,556 |
| Communist Countries in History | 0 | - | 4.63 | 492,539 |
| History of India | 0 | - | 4.61 | 21,286 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,179 |
| Countries of Africa | 0 | - | 5.00 | 2,508,077 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,439 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,438 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,822 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,542 |
| African East Coast | 0 | - | 4.96 | 95,057 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,929 |
| History of South Africa | 0 | - | 4.60 | 17,602 |
| Biggest Trading Partners - South Africa | 0 | - | 4.80 | 40,127 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,361 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,807 |
| Australian Capitals | 0 | - | 4.92 | 62,594 |
| Australia A-Z | 0 | - | 4.54 | 49,785 |
| Australia Map Quiz | 0 | - | 4.94 | 342,505 |
| Flags of North and South America | 0 | - | 4.99 | 367,294 |
| History of Mexico | 0 | - | 4.58 | 15,231 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,282 |
