| Prime Ministers of the UK | 0 | - | 4.95 | 441,438 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,908 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,151 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,812 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,286 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,412 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,473 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,719,077 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,467 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,145 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,602 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,491 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,268 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,173 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,855 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,919 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,772 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,730 |
| Countries of the Popes | 0 | - | 4.79 | 128,565 |
| National Founders | 0 | - | 4.40 | 83,934 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,995 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 162,081 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,457 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,117 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,143 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,089 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,322 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,342 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,414 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,942 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,730 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,614 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,362 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,110 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,210 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,097 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,715 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,509 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,637 |
| Russia by Picture | 0 | - | 4.41 | 20,463 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,393 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,039 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,613 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,675 |
| Political Movements by Country | 0 | - | 4.46 | 72,708 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,101 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,131 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,051 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,853 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,574 |
| Every European Country Shape | 0 | - | 4.96 | 202,631 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,733 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,695 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,805 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,458 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,312 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,564 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,607 |
| UK Immigration by Country | 0 | - | 4.94 | 141,481 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,673 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,671 |
| Name the English Monarchs | 0 | - | 4.91 | 505,447 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 97,771 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 136,597 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,340 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,958 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,729 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,083 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,879 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,580 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,797 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,911 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,688 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,448 |
| The Trojan War | 0 | - | 4.83 | 39,935 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,749 |
| Name that Greek Letter | 0 | - | 4.93 | 324,682 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,688 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,490 |
| Roman Emperors | 0 | - | 4.95 | 120,908 |
| Monty Python Quotes | 0 | - | 4.89 | 42,583 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,047 |
| Pope Facts | 0 | - | 4.39 | 31,348 |
| Hindu Countries | 0 | - | 4.87 | 50,475 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,485 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,199 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,092 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,438 |
| Presidential Middle Names | 0 | - | 4.41 | 60,609 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,571 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,813 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,151 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,581 |
| The American Revolution | 0 | - | 4.52 | 54,326 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,740 |
| Random European Flag to Country | 0 | - | 4.90 | 183,852 |
| History of Russia Quiz | 0 | - | 4.47 | 31,986 |
| Flags of Countries That Border Russia | 0 | - | 4.70 | 83,850 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,625 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,090 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,711 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,010 |
| Ancient Greek Words | 0 | - | 4.93 | 112,256 |
| History of Italy | 0 | - | 4.55 | 32,112 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,198 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,784 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,381 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,628 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,041 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 868,379 |
| Scotland A-Z | 0 | - | 4.73 | 41,408 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,087 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,042 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,413 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,425 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,673 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,944 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,453 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,055 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,299 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,990 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,136 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,697 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 320,076 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,935 |
| Russia A-Z | 0 | - | 4.46 | 27,297 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,786 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,528 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,089 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,257 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 389,470 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,769 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,105 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,421 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,831 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,317 |
| The Vietnam War | 0 | - | 4.44 | 35,624 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,486 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,046 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,059 |
| Communist Countries in History | 0 | - | 4.63 | 497,507 |
| History of South Africa | 0 | - | 4.60 | 17,743 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,947 |
| Australian Capitals | 0 | - | 4.92 | 62,805 |
| History of Mexico | 0 | - | 4.52 | 15,357 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,969 |
| American Political Words | 0 | - | 4.39 | 23,456 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,205 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,554 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,889 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,783 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,331 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,725 |
| First Ladies of the United States | 0 | - | 4.28 | 85,870 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 24,033 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,283 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,390 |
| U.S. President Scramble | 0 | - | 4.40 | 117,352 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,319 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,067 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,304 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,037 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,584 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,938 |
| Official European Union Languages | 0 | - | 4.97 | 239,453 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,455 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,217 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,451 |
| Most Forested European Countries | 0 | - | 4.80 | 75,582 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,689 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,563 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,828 |
| History of Austria | 0 | - | 4.70 | 17,952 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,309 |
| Geography of the French Empire | 0 | - | 4.45 | 27,196 |
| The French Revolution | 0 | - | 4.47 | 24,111 |
| History of France | 0 | - | 4.61 | 57,469 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,543 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,514 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,350 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,175 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,007 |
| Mythology A-Z | 0 | - | 4.31 | 37,351 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,386 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,385 |
| Byzantine History | 0 | - | 4.91 | 28,992 |
| Byzantine Emperors | 0 | - | 4.92 | 14,505 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,530 |
| History of The Netherlands | 0 | - | 4.46 | 17,529 |
| The Vikings! | 0 | - | 4.46 | 28,393 |
| The Portuguese Empire | 0 | - | 4.58 | 12,095 |
| Arthurian Legend | 0 | - | 4.33 | 25,157 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,363 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,514 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 70,176 |
| Most-Visited Countries by the British | 0 | - | 4.64 | 68,925 |
| Name the James Bond Movies | 0 | - | 4.56 | 159,214 |
| James Bond Trivia | 0 | - | 4.46 | 39,367 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,438 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,116 |
