| Prime Ministers of the UK | 0 | - | 4.96 | 434,664 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,654,776 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,266 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,946 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,517 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,684 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,438 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,618 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,164 |
| Countries of the Popes | 0 | - | 4.79 | 127,226 |
| Every European Country Shape | 0 | - | 4.96 | 200,188 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,047 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,782 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,195 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,506 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,779 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,589 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,449 |
| Random European Countries on a Map | 0 | - | 4.97 | 281,978 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,047 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,475 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,309 |
| Ancient Greek Words | 0 | - | 4.92 | 110,705 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,578 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,998 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,340 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,947 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,954 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,508 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,005 |
| Presidential Middle Names | 0 | - | 4.41 | 59,712 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,742 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,823 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,746 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,175 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,871 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,680 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 216,158 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 315,740 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,953 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,428 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,421 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,115 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,021 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,845 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,241 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,314 |
| Pope Facts | 0 | - | 4.39 | 31,043 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,758 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,575 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,906 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,865 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,527 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,521 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,294 |
| Name the English Monarchs | 0 | - | 4.92 | 497,934 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,599 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,274 |
| Every African Country Shape | 0 | - | 4.90 | 86,129 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,959 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,377 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,167 |
| First Ladies of the United States | 0 | - | 4.28 | 85,246 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,816 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,112 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,300 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,002 |
| Add a Letter - Make a U.S. President | 0 | - | 4.61 | 23,835 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,264 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,688 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,721 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,148 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,957 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,289 |
| The Trojan War | 0 | - | 4.83 | 39,429 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,959 |
| Name that Greek Letter | 0 | - | 4.94 | 321,683 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,542 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,050 |
| Roman Emperors | 0 | - | 4.95 | 118,495 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.26 | 101,477 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,376 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,142 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,499 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,497 |
| Do You Even Know Anything About Shakespeare? | 0 | - | 4.57 | 34,201 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,316 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,526 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,034 |
| Every Asian Country Shape | 0 | - | 4.95 | 86,714 |
| National Founders | 0 | - | 4.40 | 83,650 |
| Africa Flags Map Quiz | 0 | - | 4.94 | 35,942 |
| Eastern Africa Map Quiz | 0 | - | 4.98 | 78,196 |
| South America Flags Map Quiz | 0 | - | 4.95 | 86,630 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,461 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,661 |
| 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 | 7,682 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,773 |
| The American Revolution | 0 | - | 4.52 | 54,058 |
| U.S. State Flags | 0 | - | 4.89 | 167,118 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,661 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,473 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,638 |
| Flags of Countries That Border France | 0 | - | 4.89 | 122,149 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 96,370 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 97,025 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,022 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,300 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 94,309 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,383 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,685 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,921 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,113 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,347 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,951 |
| 2025–2026 English Premier League Teams | 0 | - | 4.86 | 851,467 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,820 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,683 |
| Countries that Start with C - Shape Quiz | 0 | - | 4.89 | 98,745 |
| Countries that Start with I - Shape Quiz | 0 | - | 4.86 | 113,455 |
| Countries that Start with A - Shape Quiz | 0 | - | 4.92 | 33,763 |
| Countries that Start with N - Shape Quiz | 0 | - | 4.94 | 82,288 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,947 |
| Random African Countries on a Map | 0 | - | 4.99 | 293,390 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,645 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,259 |
| 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 | 303,385 |
| 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 | 18,214 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,609 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,424 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,562 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,516 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,529 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,362 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,747 |
| Europe Flag Map - Find the Errors | 0 | - | 4.25 | 61,242 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,748 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,358 |
| History of Russia Quiz | 0 | - | 4.49 | 31,795 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,932 |
| History of Italy | 0 | - | 4.55 | 31,817 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,462 |
| Roman History by Picture | 0 | - | 4.46 | 26,343 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,737 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,482 |
| Biggest Cities Ever Under Danish Rule | 0 | - | 4.49 | 16,121 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,982 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,394 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,148 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,394 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.91 | 37,121 |
| Random Asian Countries on a Map | 0 | - | 4.90 | 168,774 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,862 |
| Communist Countries in History | 0 | - | 4.63 | 492,537 |
| Countries that Start with B - Shape Quiz | 0 | - | 4.91 | 26,519 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,216 |
| History of India | 0 | - | 4.61 | 21,286 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,178 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,420 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,538 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 126,751 |
| History of South Africa | 0 | - | 4.60 | 17,602 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,353 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| History of Mexico | 0 | - | 4.58 | 15,231 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,977 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,738 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 618,571 |
| 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 | 40,450 |
| U.S. President Scramble | 0 | - | 4.40 | 116,207 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,027 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,598 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,695 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,691 |
| Shapes of Mediterranean Sea Countries | 0 | - | 4.80 | 55,601 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,583 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,231 |
| Official European Union Languages | 0 | - | 4.97 | 236,553 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,707 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,210 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,549 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,549 |
| History of Austria | 0 | - | 4.70 | 17,748 |
| Geography of the French Empire | 0 | - | 4.48 | 26,934 |
| The French Revolution | 0 | - | 4.46 | 23,785 |
| History of France | 0 | - | 4.59 | 56,056 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,384 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,186 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,779 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,771 |
| Mythology A-Z | 0 | - | 4.31 | 36,999 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.80 | 20,669 |
