| Prime Ministers of the UK | 0 | - | 4.95 | 440,143 |
| Prime Ministers of Australia | 0 | - | 4.50 | 32,013 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,651 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,828 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,203 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,009 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,709,073 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,028 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,963 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,273 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,667 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,867 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,687 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,854 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,550 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,443 |
| Countries of the Popes | 0 | - | 4.79 | 128,357 |
| National Founders | 0 | - | 4.40 | 83,887 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,104 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,791 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,552 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,134 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,099 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,353 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,670 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,204 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,283 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,218 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,705 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,766 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,639 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,489 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,747 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,878 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,770 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,527 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,124 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,342 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,154 |
| Countries That Border Russia | 0 | - | 4.98 | 462,872 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,820 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,866 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,557 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,500 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,203 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,907 |
| Political Movements by Country | 0 | - | 4.46 | 72,624 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,039 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,107 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,944 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,831 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,160 |
| Every European Country Shape | 0 | - | 4.96 | 202,242 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,602 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,590 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,390 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,302 |
| Countries that Border Poland | 0 | - | 4.99 | 172,630 |
| Russia Country Quiz | 0 | - | 4.83 | 114,709 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,550 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,676 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,427 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,282 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,525 |
| UK Immigration by Country | 0 | - | 4.94 | 141,179 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,205 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,392 |
| Name the English Monarchs | 0 | - | 4.91 | 504,056 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,489 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,579 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,106 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,774 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,443 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,823 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,716 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,557 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,400 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,532 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,074 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,163 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,108 |
| The Trojan War | 0 | - | 4.83 | 39,803 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,990 |
| Name that Greek Letter | 0 | - | 4.93 | 324,199 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,271 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,659 |
| Roman Emperors | 0 | - | 4.95 | 120,421 |
| Monty Python Quotes | 0 | - | 4.89 | 42,512 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,709 |
| Pope Facts | 0 | - | 4.39 | 31,299 |
| Hindu Countries | 0 | - | 4.86 | 50,313 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,406 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,942 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,736 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 94,016 |
| Presidential Middle Names | 0 | - | 4.41 | 60,420 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,458 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,673 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,056 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,488 |
| The American Revolution | 0 | - | 4.52 | 54,295 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,664 |
| Random European Flag to Country | 0 | - | 4.89 | 182,998 |
| History of Russia Quiz | 0 | - | 4.47 | 31,956 |
| Russia by Picture | 0 | - | 4.41 | 20,433 |
| Russian History A-Z | 0 | - | 4.35 | 31,876 |
| Flags of Countries That Border France | 0 | - | 4.88 | 123,399 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,029 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,511 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,962 |
| Ancient Greek Words | 0 | - | 4.93 | 111,927 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,531 |
| History of Italy | 0 | - | 4.55 | 32,058 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,016 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,723 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,300 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,432 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,959 |
| Animals in British History | 0 | - | 4.43 | 26,044 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 862,087 |
| Scotland A-Z | 0 | - | 4.73 | 41,339 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,909 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,985 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,296 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,223 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,557 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,401 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,224 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,380 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,644 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,924 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,884 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,057 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,312 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 319,381 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,650 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,152 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,645 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,693 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,242 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,100 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,244 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 388,762 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,726 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,985 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,342 |
| Countries "Ruled" by King Charles III | 0 | - | 4.77 | 82,781 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,730 |
| The Vietnam War | 0 | - | 4.44 | 35,578 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,377 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,622 |
| Communist Countries in History | 0 | - | 4.63 | 496,601 |
| History of South Africa | 0 | - | 4.60 | 17,722 |
| Oceania Map Quiz | 0 | - | 4.98 | 653,738 |
| Australian Capitals | 0 | - | 4.92 | 62,757 |
| History of Mexico | 0 | - | 4.58 | 15,336 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,806 |
| American Political Words | 0 | - | 4.39 | 23,439 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,180 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,541 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,875 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,509 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,281 |
| First Ladies of the United States | 0 | - | 4.28 | 85,750 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,983 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,251 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,281 |
| U.S. President Scramble | 0 | - | 4.40 | 117,004 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,238 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 24,002 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,226 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,952 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,857 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,341 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,790 |
| Official European Union Languages | 0 | - | 4.97 | 238,954 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,151 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,118 |
| European Capitals with the Least Sunshine | 0 | - | 4.46 | 50,397 |
| Most Forested European Countries | 0 | - | 4.80 | 75,467 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,666 |
| European Cities with the Biggest Economies | 0 | - | 4.61 | 38,498 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,537 |
| Albania Country Quiz | 0 | - | 4.54 | 39,086 |
| Serbia Country Quiz | 0 | - | 4.44 | 35,096 |
| History of Austria | 0 | - | 4.70 | 17,908 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,241 |
| Geography of the French Empire | 0 | - | 4.45 | 27,157 |
| The French Revolution | 0 | - | 4.47 | 24,064 |
| History of France | 0 | - | 4.59 | 57,286 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,388 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,998 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,081 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,948 |
| Mythology A-Z | 0 | - | 4.31 | 37,291 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,842 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,754 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,275 |
| Byzantine History | 0 | - | 4.91 | 28,919 |
| Byzantine Emperors | 0 | - | 4.92 | 14,372 |
