| Prime Ministers of the UK | 0 | - | 4.95 | 443,243 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,731,799 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,569 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,704 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,756 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,681 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,240 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,982 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 146,104 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,594 |
| Name the Popes Quiz | 0 | - | 4.47 | 139,105 |
| Countries of the Popes | 0 | - | 4.78 | 128,913 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,246 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,716 |
| 100 Biggest Soviet Cities in 1989 with a Map | 0 | - | 4.97 | 30,175 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 114,535 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,700 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,068 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,927 |
| Canadian Prime Ministers | 0 | - | 4.64 | 58,021 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 72,145 |
| Countries of the German Empire | 0 | - | 4.51 | 38,314 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 54,034 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 81,098 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,759 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,680 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,487 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,773 |
| Presidential Middle Names | 0 | - | 4.42 | 60,815 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,934 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,755 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,945 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,661 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 194,055 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,974 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.46 | 26,971 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,511 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,630 |
| Tolkien's Middle Earth Map Quiz | 0 | - | 4.92 | 38,313 |
| Pope Facts | 0 | - | 4.39 | 31,430 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,146 |
| Flags of WW1 | 0 | - | 4.60 | 38,783 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,261 |
| The American Revolution | 0 | - | 4.52 | 54,394 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,741 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,777 |
| Arms Exports - Russia | 0 | - | 4.49 | 25,208 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,515 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,887 |
| Vietnam War Countries | 0 | - | 4.82 | 94,765 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,770 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,998 |
| Arms Exports - United States | 0 | - | 4.77 | 62,809 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,177 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,893 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,203 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,383 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,799 |
| First Ladies of the United States | 0 | - | 4.28 | 86,032 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.38 | 24,092 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,339 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,543 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,389 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,124 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.32 | 59,668 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,035 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,962 |
| Every European Country Shape | 0 | - | 4.96 | 203,290 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 151,447 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 201,009 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,434 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,584 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,119 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,035 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,038 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,743 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,094 |
| Name that Greek Letter | 0 | - | 4.93 | 325,342 |
| Countries of the Italian Empire | 0 | - | 4.21 | 27,855 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,142 |
| UK Immigration by Country | 0 | - | 4.94 | 141,918 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,294 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,319 |
| Countries that Visit the UK the Most | 0 | - | 4.88 | 76,028 |
| Name the English Monarchs | 0 | - | 4.91 | 507,476 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,173 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,725 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,234 |
| National Founders | 0 | - | 4.40 | 84,003 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 62,118 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,439 |
| The George Washington Presidency | 0 | - | 4.03 | 14,622 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,789 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,778 |
| The John Adams Presidency | 0 | - | 4.12 | 8,799 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 17,003 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,788 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,398 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,777 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,672 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,941 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,790 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,864 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,423 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,832 |
| Random European Countries on a Map | 0 | - | 4.97 | 285,393 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,632 |
| Europe Map with Random Merged Countries | 0 | - | 4.97 | 320,931 |
| Random European Flag to Country | 0 | - | 4.90 | 184,504 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,905 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,657 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 105,008 |
| Flags of Countries That Border France | 0 | - | 4.89 | 123,940 |
| Flags of Countries that Border Germany | 0 | - | 4.86 | 97,997 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,618 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,550 |
| The Trojan War | 0 | - | 4.83 | 40,091 |
| Ancient Greek Words | 0 | - | 4.93 | 112,694 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,270 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,982 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,706 |
| Roman Emperors | 0 | - | 4.95 | 121,462 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,457 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,204 |
| Monty Python Quotes | 0 | - | 4.89 | 42,629 |
| Shakespeare's Plays Quiz | 0 | - | 4.37 | 390,608 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,637 |
| Animals in British History | 0 | - | 4.43 | 26,121 |
| Countries "Ruled" by King Charles III | 0 | - | 4.78 | 82,923 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 29,101 |
| 2026–2027 English Premier League Teams | 0 | - | 4.84 | 873,295 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,938 |
| Prime Ministers of Israel | 0 | - | 3.97 | 18,103 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,597 |
| Biggest Axis-Controlled Cities | 0 | - | 4.44 | 49,088 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,167 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,879 |
| Win the U.S. Presidential Election | 0 | - | 4.79 | 637,506 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,625 |
| U.S. President Scramble | 0 | - | 4.40 | 117,575 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,372 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,117 |
| American Revolution Decoder | 0 | - | 4.12 | 21,004 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,503 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,128 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,256 |
| Most Forested European Countries | 0 | - | 4.80 | 75,756 |
| European Countries with NO Wolves | 0 | - | 4.56 | 65,725 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 218,256 |
| History of Russia Quiz | 0 | - | 4.47 | 32,029 |
| Countries Invaded by the USSR | 0 | - | 4.30 | 94,517 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,408 |
| History of France | 0 | - | 4.61 | 57,739 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 21,054 |
| Figures from Greek Mythology | 0 | - | 4.92 | 193,070 |
| History of Italy | 0 | - | 4.55 | 32,187 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 127,082 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,565 |
| Byzantine History | 0 | - | 4.91 | 29,057 |
| Byzantine Emperors | 0 | - | 4.93 | 14,665 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 104,173 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,856 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,470 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 69,123 |
| Arthurian Legend | 0 | - | 4.33 | 25,195 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,150 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,620 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,653 |
| British Monopoly Board - Map Quiz | 0 | - | 4.47 | 20,283 |
| Name the James Bond Movies | 0 | - | 4.56 | 159,640 |
| James Bond Trivia | 0 | - | 4.46 | 39,433 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,492 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,393 |
| Geography of the British Empire | 0 | - | 4.48 | 39,882 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.32 | 62,680 |
| Countries Most-Visited By Queen Elizabeth II | 0 | - | 4.42 | 52,038 |
| People in Pictures with Queen Elizabeth II | 0 | - | 4.38 | 29,519 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,834 |
| Communist Countries in History | 0 | - | 4.63 | 498,824 |
| Political Movements by Country | 0 | - | 4.46 | 72,842 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,511 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,621 |
| Australian Capitals | 0 | - | 4.92 | 62,864 |
| Australia Map Quiz | 0 | - | 4.95 | 346,538 |
| Flags of North and South America | 0 | - | 4.99 | 378,272 |
| History of Mexico | 0 | - | 4.52 | 15,376 |
| South America Map Quiz | 0 | - | 5.00 | 1,558,635 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,628 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,840 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,202 |
| U.S. States by Governor | 0 | - | 4.43 | 18,125 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,787 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,878 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,765 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,492 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,504 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,809 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,782 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,299 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,560 |
