| Prime Ministers of the UK | 0 | - | 4.95 | 441,247 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,903 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,132 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,797 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,209 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,387 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,423 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,717,991 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,287 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,110 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,596 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,463 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,218 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,170 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,835 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,910 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,740 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,691 |
| Countries of the Popes | 0 | - | 4.79 | 128,540 |
| National Founders | 0 | - | 4.40 | 83,931 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,900 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 162,050 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,397 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,115 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,076 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,041 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,288 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,327 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,403 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,850 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,728 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,567 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,290 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,070 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,170 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,046 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,581 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,460 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,594 |
| Russia by Picture | 0 | - | 4.41 | 20,460 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,357 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,022 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,610 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,637 |
| Political Movements by Country | 0 | - | 4.46 | 72,703 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,090 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,129 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,034 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,849 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,551 |
| Every European Country Shape | 0 | - | 4.96 | 202,570 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,711 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,681 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,757 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,435 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 102,206 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,552 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,558 |
| UK Immigration by Country | 0 | - | 4.94 | 141,439 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,617 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 75,643 |
| Name the English Monarchs | 0 | - | 4.91 | 505,244 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 97,730 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 136,453 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,315 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,931 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,642 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,036 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,856 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,577 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,743 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,872 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,667 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,407 |
| The Trojan War | 0 | - | 4.83 | 39,928 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,499 |
| Name that Greek Letter | 0 | - | 4.93 | 324,617 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,642 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,456 |
| Roman Emperors | 0 | - | 4.95 | 120,843 |
| Monty Python Quotes | 0 | - | 4.89 | 42,577 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 238,004 |
| Pope Facts | 0 | - | 4.39 | 31,342 |
| Hindu Countries | 0 | - | 4.87 | 50,436 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,477 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,159 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,034 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,391 |
| Presidential Middle Names | 0 | - | 4.41 | 60,588 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,560 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,793 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,142 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,564 |
| The American Revolution | 0 | - | 4.52 | 54,321 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,635 |
| Random European Flag to Country | 0 | - | 4.90 | 183,781 |
| History of Russia Quiz | 0 | - | 4.47 | 31,980 |
| Flags of Countries That Border Russia | 0 | - | 4.70 | 83,804 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,596 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,083 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,690 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,880 |
| Ancient Greek Words | 0 | - | 4.93 | 112,210 |
| History of Italy | 0 | - | 4.55 | 32,105 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,177 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,774 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,373 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,602 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,036 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 867,639 |
| Scotland A-Z | 0 | - | 4.73 | 41,403 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 51,066 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,036 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,392 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,382 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,658 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,913 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,427 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,986 |
| Category Elimination - U.S. States #2 | 0 | - | 4.83 | 135,245 |
| Europe Map Quiz | 0 | - | 5.00 | 4,779,735 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,125 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,646 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 320,001 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,814 |
| Russia A-Z | 0 | - | 4.46 | 27,294 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,770 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,495 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,945 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,255 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 389,341 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,767 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,087 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,409 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,828 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,256 |
| The Vietnam War | 0 | - | 4.44 | 35,621 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,471 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,008 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,045 |
| Communist Countries in History | 0 | - | 4.63 | 497,388 |
| History of South Africa | 0 | - | 4.60 | 17,740 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,726 |
| Australian Capitals | 0 | - | 4.92 | 62,802 |
| History of Mexico | 0 | - | 4.52 | 15,353 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,364 |
| American Political Words | 0 | - | 4.39 | 23,452 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,203 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,552 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,888 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,750 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,326 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,713 |
| First Ladies of the United States | 0 | - | 4.28 | 85,845 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 24,025 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,278 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,374 |
| U.S. President Scramble | 0 | - | 4.40 | 117,332 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,310 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,060 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,298 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,025 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,546 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,922 |
| Official European Union Languages | 0 | - | 4.97 | 239,390 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,415 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,092 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,443 |
| Most Forested European Countries | 0 | - | 4.80 | 75,554 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,687 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,554 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,796 |
| History of Austria | 0 | - | 4.70 | 17,949 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,298 |
| Geography of the French Empire | 0 | - | 4.45 | 27,193 |
| The French Revolution | 0 | - | 4.47 | 24,108 |
| History of France | 0 | - | 4.61 | 57,450 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,539 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,494 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,308 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,165 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,999 |
| Mythology A-Z | 0 | - | 4.31 | 37,346 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,301 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,370 |
| Byzantine History | 0 | - | 4.91 | 28,983 |
| Byzantine Emperors | 0 | - | 4.92 | 14,487 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,502 |
| History of The Netherlands | 0 | - | 4.46 | 17,524 |
| The Vikings! | 0 | - | 4.46 | 28,388 |
| The Portuguese Empire | 0 | - | 4.58 | 12,094 |
| Arthurian Legend | 0 | - | 4.33 | 25,144 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,344 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,501 |
| Top 100 UK Baby Boys' Names in 1850 | 0 | - | 4.42 | 70,158 |
| Most-Visited Countries by the British | 0 | - | 4.64 | 68,907 |
| Name the James Bond Movies | 0 | - | 4.56 | 159,165 |
| James Bond Trivia | 0 | - | 4.46 | 39,359 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,434 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,094 |
