| Prime Ministers of the UK | 0 | - | 4.95 | 439,749 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,705,211 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,669 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,611 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,756 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,147 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,824 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,595 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,845 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,485 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,358 |
| Countries of the Popes | 0 | - | 4.79 | 128,260 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,986 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,738 |
| 100 Biggest Soviet Cities in 1989 with a Map | 0 | - | 4.97 | 29,894 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,666 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,329 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,866 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,855 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,601 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,598 |
| Countries of the German Empire | 0 | - | 4.51 | 37,991 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,825 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,473 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,207 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,854 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,645 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,930 |
| Presidential Middle Names | 0 | - | 4.41 | 60,366 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,968 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,146 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,421 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,645 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,464 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,358 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,406 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,850 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,671 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,225 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 37,927 |
| Pope Facts | 0 | - | 4.39 | 31,275 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,085 |
| Flags of WW1 | 0 | - | 4.60 | 38,460 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,031 |
| The American Revolution | 0 | - | 4.52 | 54,275 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,362 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,498 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,147 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,142 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,958 |
| Vietnam War Countries | 0 | - | 4.82 | 94,317 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,694 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,013 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,714 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,652 |
| Arms Exports - United States | 0 | - | 4.77 | 62,480 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,920 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,551 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,410 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,272 |
| First Ladies of the United States | 0 | - | 4.28 | 85,706 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,236 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,207 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,226 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,988 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,985 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,849 |
| Every European Country Shape | 0 | - | 4.96 | 202,069 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,913 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,675 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,907 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,623 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 82,948 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,948 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,227 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,053 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,394 |
| Name that Greek Letter | 0 | - | 4.93 | 324,063 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,715 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,177 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,417 |
| UK Immigration by Country | 0 | - | 4.94 | 141,070 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,061 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,017 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,281 |
| Name the English Monarchs | 0 | - | 4.91 | 503,532 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,387 |
| National Founders | 0 | - | 4.40 | 83,865 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,660 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,662 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,232 |
| The George Washington Presidency | 0 | - | 4.03 | 14,554 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,742 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,659 |
| The John Adams Presidency | 0 | - | 4.12 | 8,754 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,942 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,747 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,331 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,699 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,152 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,866 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,142 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,479 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,265 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,545 |
| Random European Countries on a Map | 0 | - | 4.97 | 284,111 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,395 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 319,074 |
| Random European Flag to Country | 0 | - | 4.89 | 182,790 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,109 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,562 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,989 |
| Flags of Countries That Border France | 0 | - | 4.88 | 123,318 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,424 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,495 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,547 |
| The Trojan War | 0 | - | 4.83 | 39,776 |
| Ancient Greek Words | 0 | - | 4.93 | 111,813 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,079 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,330 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,610 |
| Roman Emperors | 0 | - | 4.95 | 120,280 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,968 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,022 |
| Monty Python Quotes | 0 | - | 4.88 | 42,494 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 388,540 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,599 |
| Animals in British History | 0 | - | 4.43 | 26,032 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,768 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,873 |
| 2025–2026 English Premier League Teams | 0 | - | 4.85 | 861,153 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,843 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,966 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,254 |
| Biggest Axis-Controlled Cities | 0 | - | 4.44 | 48,914 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,518 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,096 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,824 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 629,200 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,527 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,207 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,729 |
| U.S. President Scramble | 0 | - | 4.40 | 116,871 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,206 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,932 |
| American Revolution Decoder | 0 | - | 4.10 | 20,965 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,301 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,203 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,029 |
| Most Forested European Countries | 0 | - | 4.80 | 75,419 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,645 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,412 |
| History of Russia Quiz | 0 | - | 4.47 | 31,943 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,116 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,211 |
| History of France | 0 | - | 4.59 | 57,203 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,818 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,328 |
| History of Italy | 0 | - | 4.55 | 32,032 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,106 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,235 |
| Byzantine History | 0 | - | 4.91 | 28,904 |
| Byzantine Emperors | 0 | - | 4.92 | 14,313 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,124 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,705 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,282 |
| Arthurian Legend | 0 | - | 4.33 | 25,127 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,924 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,135 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,396 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,237 |
| Name the James Bond Movies | 0 | - | 4.56 | 158,668 |
| James Bond Trivia | 0 | - | 4.46 | 39,298 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,384 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,604 |
| Geography of the British Empire | 0 | - | 4.48 | 39,726 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 62,185 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 51,798 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,320 |
| Communist Countries in History | 0 | - | 4.63 | 496,258 |
| Political Movements by Country | 0 | - | 4.46 | 72,594 |
| History of India | 0 | - | 4.62 | 21,445 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,492 |
| Countries of Africa | 0 | - | 5.00 | 2,542,214 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,568 |
| Africa Map Quiz | 0 | - | 5.00 | 2,120,527 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,010 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,477 |
| African East Coast | 0 | - | 4.96 | 96,195 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,054 |
| History of South Africa | 0 | - | 4.60 | 17,709 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,374 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,835 |
| Australian Capitals | 0 | - | 4.92 | 62,739 |
| Australia Map Quiz | 0 | - | 4.95 | 344,926 |
| Flags of North and South America | 0 | - | 4.99 | 373,883 |
| History of Mexico | 0 | - | 4.58 | 15,324 |
| South America Map Quiz | 0 | - | 5.00 | 1,551,070 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,024,954 |
| United States Map Quiz | 0 | - | 4.98 | 4,162,106 |
