| Prime Ministers of the UK | 0 | - | 4.95 | 440,074 |
| Prime Ministers of Australia | 0 | - | 4.50 | 32,003 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,645 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,808 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,192 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,985 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,708,486 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,011 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,950 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,266 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,653 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,865 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,677 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,854 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,541 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,432 |
| Countries of the Popes | 0 | - | 4.79 | 128,342 |
| National Founders | 0 | - | 4.40 | 83,883 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,067 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,773 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,550 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,119 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,098 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,311 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,603 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,476 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,644 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,725 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,864 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,803 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,195 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,279 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,166 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,704 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,089 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,769 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,818 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,755 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,938 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,753 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,439 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,104 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,324 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,300 |
| Russia Country Quiz | 0 | - | 4.83 | 114,697 |
| Countries That Border Russia | 0 | - | 4.98 | 462,837 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,857 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,554 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,494 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,267 |
| UK Immigration by Country | 0 | - | 4.94 | 141,165 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,173 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,152 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,897 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,474 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,503 |
| Political Movements by Country | 0 | - | 4.46 | 72,622 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,435 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,036 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,107 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,555 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,830 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,075 |
| Every European Country Shape | 0 | - | 4.96 | 202,209 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,592 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,585 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,374 |
| Countries that Border Poland | 0 | - | 4.99 | 172,611 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,501 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,667 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,898 |
| Name that Greek Letter | 0 | - | 4.93 | 324,173 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,418 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,380 |
| Name the English Monarchs | 0 | - | 4.91 | 503,961 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,210 |
| Hindu Countries | 0 | - | 4.86 | 50,304 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,709 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,927 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,720 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,997 |
| Presidential Middle Names | 0 | - | 4.41 | 60,409 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,453 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,669 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,484 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,381 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,515 |
| Random European Flag to Country | 0 | - | 4.89 | 182,976 |
| Russian History A-Z | 0 | - | 4.35 | 31,865 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,061 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,152 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,085 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,026 |
| The Trojan War | 0 | - | 4.83 | 39,798 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,249 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,654 |
| Roman Emperors | 0 | - | 4.95 | 120,398 |
| Monty Python Quotes | 0 | - | 4.89 | 42,509 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,689 |
| Scotland A-Z | 0 | - | 4.73 | 41,337 |
| Pope Facts | 0 | - | 4.39 | 31,293 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,905 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,982 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,293 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,549 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,401 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,364 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,053 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,216 |
| The American Revolution | 0 | - | 4.52 | 54,294 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,332 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,621 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,593 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,294 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 319,327 |
| History of Russia Quiz | 0 | - | 4.47 | 31,950 |
| Russia by Picture | 0 | - | 4.41 | 20,432 |
| Flags of Countries That Border France | 0 | - | 4.88 | 123,388 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,499 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,902 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,686 |
| Ancient Greek Words | 0 | - | 4.93 | 111,914 |
| History of Italy | 0 | - | 4.55 | 32,053 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,010 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,020 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,720 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,295 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,420 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,957 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,978 |
| Countries "Ruled" by King Charles III | 0 | - | 4.77 | 82,779 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 861,960 |
| The Vietnam War | 0 | - | 4.44 | 35,578 |
| History of India | 0 | - | 4.62 | 21,454 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,600 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 101,031 |
| History of South Africa | 0 | - | 4.60 | 17,717 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,179 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,540 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,875 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,494 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,281 |
| First Ladies of the United States | 0 | - | 4.28 | 85,747 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,981 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,247 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,254 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,237 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,998 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,857 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,920 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,280 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,393 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,053 |
| Most Forested European Countries | 0 | - | 4.80 | 75,454 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,664 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,496 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,518 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,590 |
| Albania Country Quiz | 0 | - | 4.54 | 39,083 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,151 |
| Serbia Country Quiz | 0 | - | 4.44 | 35,091 |
| History of Austria | 0 | - | 4.70 | 17,905 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,236 |
| Geography of the French Empire | 0 | - | 4.45 | 27,155 |
| The French Revolution | 0 | - | 4.47 | 24,064 |
| History of France | 0 | - | 4.59 | 57,275 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,384 |
| Mythology A-Z | 0 | - | 4.31 | 37,287 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,840 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,726 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,219 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,229 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| The Portuguese Empire | 0 | - | 4.58 | 12,082 |
| Arthurian Legend | 0 | - | 4.33 | 25,132 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,190 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,426 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,244 |
| Name the James Bond Movies | 0 | - | 4.56 | 158,735 |
| James Bond Trivia | 0 | - | 4.46 | 39,310 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 388,724 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,720 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,405 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,671 |
| Geography of the British Empire | 0 | - | 4.48 | 39,734 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,264 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,336 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,703 |
| History of Iran | 0 | - | 4.66 | 16,373 |
| The Iraq War | 0 | - | 4.47 | 15,674 |
| History of China | 0 | - | 4.37 | 57,321 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,371 |
| Communist Countries in History | 0 | - | 4.63 | 496,528 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,520 |
| Countries of Africa | 0 | - | 5.00 | 2,545,066 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,828 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,107 |
| African East Coast | 0 | - | 4.96 | 96,285 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,153 |
| Oceania Map Quiz | 0 | - | 4.98 | 652,227 |
