| Prime Ministers of the UK | 0 | - | 4.95 | 440,219 |
| Prime Ministers of Australia | 0 | - | 4.50 | 32,020 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,662 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,786 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,834 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,709,780 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,455 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,284 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,207 |
| National Founders | 0 | - | 4.40 | 83,890 |
| Biggest Trading Partners - South Africa | 0 | - | 4.74 | 40,346 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,154 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,101 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,394 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,214 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,290 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,709 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,780 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,672 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,500 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,787 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,602 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,139 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,356 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,170 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,869 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 101,045 |
| Political Movements by Country | 0 | - | 4.46 | 72,630 |
| Countries Bordering South Africa | 0 | - | 4.97 | 92,824 |
| Countries Closest to South Africa with Exceptions | 0 | - | 4.81 | 64,026 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,041 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,109 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,950 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,832 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,287 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,592 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,052 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,852 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,970 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,411 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,433 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,322 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,538 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,039 |
| Name the English Monarchs | 0 | - | 4.91 | 504,141 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,461 |
| Countries of the Popes | 0 | - | 4.79 | 128,367 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,516 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,636 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,120 |
| Every African Country Shape | 0 | - | 4.90 | 87,704 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,722 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,558 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,562 |
| The Trojan War | 0 | - | 4.83 | 39,808 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,078 |
| Name that Greek Letter | 0 | - | 4.93 | 324,224 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,291 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,664 |
| Roman Emperors | 0 | - | 4.95 | 120,441 |
| Egypt Country Quiz | 0 | - | 4.83 | 77,668 |
| Hindu Countries | 0 | - | 4.86 | 50,320 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,411 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,958 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,752 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 94,038 |
| Presidential Middle Names | 0 | - | 4.41 | 60,437 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,472 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,679 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,065 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,496 |
| The American Revolution | 0 | - | 4.52 | 54,296 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,734 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,812 |
| History of Russia Quiz | 0 | - | 4.47 | 31,957 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,033 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,693 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,024 |
| Ancient Greek Words | 0 | - | 4.93 | 111,937 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,562 |
| History of Italy | 0 | - | 4.55 | 32,062 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,503 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,725 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,303 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,439 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,856 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,966 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,556 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,147 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,911 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,920 |
| Countries Closest to Egypt | 0 | - | 4.83 | 101,219 |
| Countries that Beat Egypt | 0 | - | 4.88 | 57,138 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,986 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,303 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,228 |
| Africa Flags Map Quiz | 0 | - | 4.95 | 36,569 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,558 |
| Random African Flag to Country | 0 | - | 4.88 | 75,245 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,516 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,234 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,497 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,665 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,928 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,469 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,058 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,768 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,762 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,896 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,830 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,666 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,161 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,728 |
| Pope Facts | 0 | - | 4.39 | 31,304 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,748 |
| The Vietnam War | 0 | - | 4.44 | 35,584 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,380 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,643 |
| Random African Countries on a Map | 0 | - | 4.99 | 296,907 |
| Africa Map with Random Merged Countries | 0 | - | 4.95 | 73,954 |
| Communist Countries in History | 0 | - | 4.63 | 496,652 |
| History of South Africa | 0 | - | 4.60 | 17,723 |
| Oceania Map Quiz | 0 | - | 4.98 | 654,449 |
| Australian Capitals | 0 | - | 4.92 | 62,760 |
| History of Mexico | 0 | - | 4.58 | 15,339 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,018 |
| 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 | 136,535 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,290 |
| First Ladies of the United States | 0 | - | 4.28 | 85,760 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,984 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,251 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,286 |
| U.S. President Scramble | 0 | - | 4.40 | 117,133 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,240 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 24,006 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,231 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,955 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,862 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,351 |
| Official European Union Languages | 0 | - | 4.97 | 238,973 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,164 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,183 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,169 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,872 |
| History of Austria | 0 | - | 4.70 | 17,912 |
| Geography of the French Empire | 0 | - | 4.45 | 27,157 |
| The French Revolution | 0 | - | 4.47 | 24,070 |
| History of France | 0 | - | 4.61 | 57,298 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,395 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,086 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,951 |
| Mythology A-Z | 0 | - | 4.31 | 37,296 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,848 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,800 |
| Byzantine History | 0 | - | 4.91 | 28,920 |
| Byzantine Emperors | 0 | - | 4.92 | 14,382 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,255 |
| History of The Netherlands | 0 | - | 4.46 | 17,489 |
| The Vikings! | 0 | - | 4.46 | 28,372 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| Arthurian Legend | 0 | - | 4.33 | 25,132 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,409 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,692 |
| Geography of the British Empire | 0 | - | 4.48 | 39,744 |
| Medieval English History | 0 | - | 4.53 | 43,578 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,625 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,848 |
| Asia Map Quiz | 0 | - | 4.99 | 920,008 |
| Top 10 Richest Countries in Asia | 0 | - | 4.74 | 105,880 |
| History of Iran | 0 | - | 4.66 | 16,383 |
| The Iraq War | 0 | - | 4.47 | 15,674 |
| Chinese Inventions | 0 | - | 4.30 | 33,826 |
| History of China | 0 | - | 4.37 | 57,353 |
| History of India | 0 | - | 4.62 | 21,461 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,530 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,296 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,978 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,526 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,888 |
| Countries by Founding Story | 0 | - | 4.95 | 77,411 |
| Independence from Whom | 0 | - | 4.99 | 212,193 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,800 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,618 |
| South Africa Multiple Choice | 0 | - | 4.55 | 27,504 |
| Countries that Beat South Africa | 0 | - | 4.69 | 42,447 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,979 |
| Australian States and Territories | 0 | - | 4.96 | 142,269 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,372 |
| Australia A-Z | 0 | - | 4.54 | 50,032 |
| Australia Map Quiz | 0 | - | 4.95 | 345,259 |
| Australia True or False | 0 | - | 4.87 | 56,962 |
| Flags of North and South America | 0 | - | 4.99 | 374,512 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,727 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,425 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,145 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,030 |
