| Prime Ministers of the UK | 0 | - | 4.96 | 434,720 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,655,236 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,277 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,947 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,524 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,687 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,447 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,626 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,171 |
| Countries of the Popes | 0 | - | 4.79 | 127,239 |
| Every European Country Shape | 0 | - | 4.96 | 200,221 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,052 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,796 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,275 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,507 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,801 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,602 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,454 |
| Random European Countries on a Map | 0 | - | 4.97 | 281,993 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,054 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,492 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,311 |
| Ancient Greek Words | 0 | - | 4.92 | 110,713 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,605 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,002 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,351 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,950 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,960 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,517 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,008 |
| Presidential Middle Names | 0 | - | 4.41 | 59,715 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,745 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,826 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,748 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,176 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,882 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,682 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,172 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 315,770 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,973 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,441 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,436 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,128 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,032 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,853 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,248 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,317 |
| Pope Facts | 0 | - | 4.39 | 31,048 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,759 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,575 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,913 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,874 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,530 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,529 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,314 |
| Name the English Monarchs | 0 | - | 4.92 | 498,018 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,600 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,290 |
| Every African Country Shape | 0 | - | 4.90 | 86,135 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,968 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,377 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,168 |
| First Ladies of the United States | 0 | - | 4.28 | 85,248 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,817 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,113 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,303 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,003 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,837 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,277 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,690 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,737 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,153 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,965 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,294 |
| The Trojan War | 0 | - | 4.83 | 39,436 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,012 |
| Name that Greek Letter | 0 | - | 4.94 | 321,708 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,553 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,058 |
| Roman Emperors | 0 | - | 4.95 | 118,504 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,493 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,381 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,148 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,517 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,514 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,204 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,335 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,532 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,039 |
| Every Asian Country Shape | 0 | - | 4.95 | 86,719 |
| National Founders | 0 | - | 4.40 | 83,653 |
| Africa Flags Map Quiz | 0 | - | 4.94 | 35,947 |
| Eastern Africa Map Quiz | 0 | - | 4.98 | 78,206 |
| South America Flags Map Quiz | 0 | - | 4.95 | 86,645 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,461 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,662 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,502 |
| The John Adams Presidency | 0 | - | 4.12 | 8,677 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,683 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,774 |
| The American Revolution | 0 | - | 4.52 | 54,059 |
| U.S. State Flags | 0 | - | 4.89 | 167,153 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,664 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,492 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,642 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,161 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,378 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 97,043 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,029 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,321 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 94,333 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,389 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,691 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,940 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,141 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,364 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,957 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 851,619 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,821 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,689 |
| Countries that Start with C - Shape Quiz | 0 | - | 4.89 | 98,750 |
| Countries that Start with I - Shape Quiz | 0 | - | 4.86 | 113,461 |
| Countries that Start with A - Shape Quiz | 0 | - | 4.92 | 33,772 |
| Countries that Start with N - Shape Quiz | 0 | - | 4.94 | 82,298 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,953 |
| Random African Countries on a Map | 0 | - | 4.99 | 293,415 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,653 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,260 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,883 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,670 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,398 |
| The George Washington Presidency | 0 | - | 4.03 | 14,476 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,870 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,219 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,609 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,430 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,581 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,528 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,889 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,404 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,750 |
| Europe Flag Map - Find the Errors | 0 | - | 4.25 | 61,250 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,770 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,373 |
| History of Russia Quiz | 0 | - | 4.49 | 31,795 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,937 |
| History of Italy | 0 | - | 4.55 | 31,819 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,464 |
| Roman History by Picture | 0 | - | 4.46 | 26,344 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,746 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,486 |
| Biggest Cities Ever Under Danish Rule | 0 | - | 4.49 | 16,123 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,984 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,433 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,148 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,398 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,127 |
| Random Asian Countries on a Map | 0 | - | 4.90 | 168,800 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,865 |
| Communist Countries in History | 0 | - | 4.63 | 492,566 |
| Countries that Start with B - Shape Quiz | 0 | - | 4.91 | 26,530 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,216 |
| History of India | 0 | - | 4.61 | 21,288 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,180 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,558 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,556 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 126,758 |
| History of South Africa | 0 | - | 4.60 | 17,602 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,415 |
| Australian Capitals | 0 | - | 4.92 | 62,594 |
| History of Mexico | 0 | - | 4.58 | 15,231 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,078 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,742 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 618,642 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,364 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,089 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,456 |
| U.S. President Scramble | 0 | - | 4.40 | 116,209 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,027 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,600 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,697 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,691 |
| Shapes of Mediterranean Sea Countries | 0 | - | 4.80 | 55,602 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,589 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,236 |
| Official European Union Languages | 0 | - | 4.97 | 236,689 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,712 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,250 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,586 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,558 |
| History of Austria | 0 | - | 4.70 | 17,754 |
| Geography of the French Empire | 0 | - | 4.48 | 26,938 |
| The French Revolution | 0 | - | 4.46 | 23,786 |
| History of France | 0 | - | 4.59 | 56,077 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,387 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,209 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,781 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,774 |
| Mythology A-Z | 0 | - | 4.31 | 37,005 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,672 |
