| Prime Ministers of the UK | 0 | - | 4.95 | 437,684 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,845 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,414 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,849 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,190 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 94,829 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,831 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,687,213 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,346 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,658 |
| National Founders | 0 | - | 4.40 | 83,786 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,759 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,298 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,719 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,129 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,223 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,751 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,865 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,612 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,874 |
| Countries of the Popes | 0 | - | 4.79 | 127,846 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,049 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,138 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,775 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,038 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,857 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,101 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,255 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,685 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,989 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,962 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,998 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,644 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,286 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,382 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,008 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,220 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,407 |
| Political Movements by Country | 0 | - | 4.46 | 72,457 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,586 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,409 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,280 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,916 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,792 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,032 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,587 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,434 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,238 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,688 |
| UK Immigration by Country | 0 | - | 4.94 | 140,637 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,388 |
| Name the English Monarchs | 0 | - | 4.91 | 501,344 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,978 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 129,455 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,004 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,062 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,500 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,752 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,480 |
| Every European Country Shape | 0 | - | 4.96 | 201,254 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,605 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,435 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,740 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,963 |
| Name that Greek Letter | 0 | - | 4.93 | 323,050 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 74,882 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,822 |
| Hindu Countries | 0 | - | 4.86 | 49,990 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,828 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,328 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,401 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,683 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,854 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,023 |
| Random European Flag to Country | 0 | - | 4.89 | 181,898 |
| History of Russia Quiz | 0 | - | 4.49 | 31,878 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,142 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,465 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,460 |
| The Trojan War | 0 | - | 4.83 | 39,640 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,509 |
| History of Italy | 0 | - | 4.55 | 31,933 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,402 |
| Roman Emperors | 0 | - | 4.95 | 119,635 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,608 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,156 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,785 |
| Monty Python Quotes | 0 | - | 4.88 | 42,434 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,141 |
| Pope Facts | 0 | - | 4.39 | 31,196 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,619 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,588 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,914 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,036 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,228 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,510 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,224 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,566 |
| Presidential Middle Names | 0 | - | 4.41 | 60,094 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,170 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,420 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,932 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,346 |
| The American Revolution | 0 | - | 4.52 | 54,209 |
| Europe Map Quiz | 0 | - | 5.00 | 4,754,690 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,913 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,664 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,897 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,843 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,466 |
| Ancient Greek Words | 0 | - | 4.93 | 111,319 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,736 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,101 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 857,277 |
| Scotland A-Z | 0 | - | 4.73 | 41,217 |
| History of India | 0 | - | 4.61 | 21,393 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,370 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,784 |
| History of South Africa | 0 | - | 4.60 | 17,658 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,367 |
| Australian Capitals | 0 | - | 4.92 | 62,694 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,135 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,502 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,853 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,035 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,239 |
| First Ladies of the United States | 0 | - | 4.28 | 85,530 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,196 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,916 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,580 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,155 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,847 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,928 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,279 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,807 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,791 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,617 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,982 |
| Official European Union Languages | 0 | - | 4.97 | 238,081 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,586 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,423 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,285 |
| Most Forested European Countries | 0 | - | 4.80 | 75,224 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,606 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,368 |
| Random European Countries on a Map | 0 | - | 4.97 | 283,029 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 317,464 |
| Arms Exports - Russia | 0 | - | 4.48 | 25,118 |
| History of Austria | 0 | - | 4.70 | 17,831 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,108 |
| Geography of the French Empire | 0 | - | 4.45 | 27,019 |
| The French Revolution | 0 | - | 4.46 | 23,898 |
| History of France | 0 | - | 4.59 | 56,808 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,460 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,215 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,523 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,532 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,053 |
| The Vikings! | 0 | - | 4.46 | 28,318 |
| The Portuguese Empire | 0 | - | 4.58 | 12,045 |
| Arthurian Legend | 0 | - | 4.33 | 25,094 |
| Biggest British Empire Countries | 0 | - | 4.74 | 99,739 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,258 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,189 |
| Name the James Bond Movies | 0 | - | 4.56 | 158,295 |
| James Bond Trivia | 0 | - | 4.46 | 39,241 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 387,450 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,594 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,663 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,303 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,284 |
| Geography of the British Empire | 0 | - | 4.48 | 39,627 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,953 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,212 |
| Countries "Ruled" by King Charles III | 0 | - | 4.77 | 82,707 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,359 |
| Asia Map Quiz | 0 | - | 4.99 | 914,223 |
| History of Iran | 0 | - | 4.66 | 16,337 |
| The Vietnam War | 0 | - | 4.44 | 35,477 |
| History of China | 0 | - | 4.37 | 57,030 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,152 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,909 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,569 |
| Countries by Founding Story | 0 | - | 4.95 | 77,033 |
| Communist Countries in History | 0 | - | 4.63 | 494,800 |
| Independence from Whom | 0 | - | 4.99 | 211,225 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,632 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,354 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,384 |
| Countries of Africa | 0 | - | 5.00 | 2,529,223 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,573 |
| African East Coast | 0 | - | 4.96 | 95,786 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,593 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,435 |
| Australia Map Quiz | 0 | - | 4.95 | 343,781 |
| History of Mexico | 0 | - | 4.58 | 15,290 |
| United States Map Quiz | 0 | - | 4.98 | 4,153,470 |
| American Political Words | 0 | - | 4.39 | 23,395 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,924 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,679 |
