| Prime Ministers of the UK | 0 | - | 4.95 | 439,663 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,985 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,591 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,708 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,718 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,363 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,704,343 |
| Egypt Country Quiz | 0 | - | 4.83 | 77,611 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,694 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,193 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,135 |
| Countries Closest to Egypt | 0 | - | 4.83 | 101,127 |
| National Founders | 0 | - | 4.40 | 83,862 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,817 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,101 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,220 |
| Countries that Beat Egypt | 0 | - | 4.88 | 57,081 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,085 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,630 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,180 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,391 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,600 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 82,860 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,914 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,204 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,038 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,846 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,135 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,994 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,966 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,012 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,913 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,638 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,377 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,831 |
| Name the English Monarchs | 0 | - | 4.91 | 503,433 |
| Name the Popes Quiz | 0 | - | 4.47 | 138,340 |
| Countries of the Popes | 0 | - | 4.79 | 128,249 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,360 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,108 |
| Political Movements by Country | 0 | - | 4.46 | 72,588 |
| Hindu Countries | 0 | - | 4.86 | 50,240 |
| Every African Country Shape | 0 | - | 4.90 | 87,511 |
| Biggest Trading Partners - South Africa | 0 | - | 4.74 | 40,313 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,655 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,096 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,549 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,822 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,949 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,536 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,898 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,898 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,246 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,531 |
| The Trojan War | 0 | - | 4.83 | 39,772 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,292 |
| Name that Greek Letter | 0 | - | 4.93 | 324,041 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,054 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,603 |
| Roman Emperors | 0 | - | 4.95 | 120,252 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,225 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,979 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,401 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,142 |
| Africa Flags Map Quiz | 0 | - | 4.95 | 36,535 |
| Random African Flag to Country | 0 | - | 4.88 | 75,040 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,377 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,833 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,617 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,907 |
| Presidential Middle Names | 0 | - | 4.41 | 60,352 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,409 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,640 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,030 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,460 |
| The American Revolution | 0 | - | 4.52 | 54,269 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,649 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,997 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,586 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,478 |
| Ancient Greek Words | 0 | - | 4.93 | 111,783 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,289 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,482 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,350 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,822 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,463 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,007 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,843 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,964 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,241 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,511 |
| Random African Countries on a Map | 0 | - | 4.99 | 296,655 |
| Africa Map with Random Merged Countries | 0 | - | 4.95 | 73,801 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,390 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,270 |
| First Ladies of the United States | 0 | - | 4.28 | 85,700 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,236 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,194 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,188 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,225 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,118 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,986 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,076 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,433 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,846 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,866 |
| Europe Map Quiz | 0 | - | 5.00 | 4,767,659 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,131 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,023 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,592 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,733 |
| History of Russia Quiz | 0 | - | 4.47 | 31,941 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,717 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,350 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,469 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,514 |
| History of Italy | 0 | - | 4.55 | 32,029 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,108 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,620 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,703 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,276 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,918 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,693 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,869 |
| Pope Facts | 0 | - | 4.39 | 31,272 |
| The Vietnam War | 0 | - | 4.44 | 35,562 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,317 |
| Communist Countries in History | 0 | - | 4.63 | 496,196 |
| History of India | 0 | - | 4.62 | 21,445 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,488 |
| Africa Map Quiz | 0 | - | 5.00 | 2,120,248 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,450 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,857 |
| History of South Africa | 0 | - | 4.60 | 17,709 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,279 |
| Australian Capitals | 0 | - | 4.92 | 62,737 |
| History of Mexico | 0 | - | 4.58 | 15,323 |
| United States Map Quiz | 0 | - | 4.98 | 4,161,742 |
| American Political Words | 0 | - | 4.39 | 23,435 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,175 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,536 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,870 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,519 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,206 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,968 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,721 |
| U.S. President Scramble | 0 | - | 4.40 | 116,862 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,204 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,927 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,254 |
| Official European Union Languages | 0 | - | 4.97 | 238,737 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,017 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,663 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,168 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,106 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,819 |
| History of Austria | 0 | - | 4.70 | 17,884 |
| Geography of the French Empire | 0 | - | 4.45 | 27,141 |
| The French Revolution | 0 | - | 4.47 | 24,034 |
| History of France | 0 | - | 4.59 | 57,178 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,046 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,938 |
| Mythology A-Z | 0 | - | 4.31 | 37,259 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,814 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,300 |
| Byzantine History | 0 | - | 4.91 | 28,898 |
| Byzantine Emperors | 0 | - | 4.92 | 14,293 |
| Count in Roman Numerals - 30 Second Sprint | 0 | - | 4.27 | 103,106 |
| History of The Netherlands | 0 | - | 4.46 | 17,460 |
| The Vikings! | 0 | - | 4.46 | 28,359 |
| The Portuguese Empire | 0 | - | 4.58 | 12,077 |
| Arthurian Legend | 0 | - | 4.33 | 25,127 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,379 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,595 |
| Geography of the British Empire | 0 | - | 4.48 | 39,725 |
| Medieval English History | 0 | - | 4.53 | 43,556 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,619 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,092 |
| Asia Map Quiz | 0 | - | 4.99 | 918,295 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,441 |
| Top 10 Richest Countries in Asia | 0 | - | 4.74 | 105,783 |
| History of Iran | 0 | - | 4.66 | 16,367 |
| The Iraq War | 0 | - | 4.47 | 15,664 |
| Chinese Inventions | 0 | - | 4.30 | 33,811 |
| History of China | 0 | - | 4.37 | 57,265 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,385 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,801 |
| Countries by Founding Story | 0 | - | 4.95 | 77,316 |
| Independence from Whom | 0 | - | 4.99 | 211,955 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,634 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,561 |
| Africa Capitals Quiz | 0 | - | 4.99 | 738,839 |
| Countries of Africa | 0 | - | 5.00 | 2,541,656 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,039 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,387 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,993 |
| African Capitals by Map | 0 | - | 4.99 | 134,056 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,199 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,709 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,375 |
