| Famous Dictators Quiz #1 | 0 | - | 4.69 | 190,577 |
| G7 Leaders Since 2003 | 0 | - | 4.47 | 40,603 |
| Famous Dictators Quiz #2 | 0 | - | 4.34 | 83,333 |
| Historical Leaders by Date #1 | 0 | - | 4.49 | 29,661 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 28,584 |
| Historical Rulers #2 | 0 | - | 4.26 | 45,260 |
| Historical Rulers #1 | 0 | - | 4.34 | 115,209 |
| World Leaders Quiz #1 | 0 | - | 4.12 | 105,398 |
| Words for Leaders | 0 | - | 4.77 | 228,719 |
| World Leaders Quiz #2 | 0 | - | 4.01 | 25,998 |
| UN Secretaries-General | 0 | - | 4.40 | 7,456 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.04 | 18,907 |
| Prime Ministers of the UK | 0 | - | 4.95 | 408,313 |
| NATO Countries Quiz | 0 | - | 4.98 | 255,890 |
| EU Countries Quiz | 0 | - | 4.99 | 252,501 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.77 | 73,662 |
| Political Figures by Last Name #1 | 0 | - | 4.53 | 63,776 |
| World Leaders of the Cold War | 0 | - | 4.31 | 23,531 |
| Military History Vocabulary | 0 | - | 4.91 | 63,366 |
| U.S. Citizenship Test Questions | 0 | - | 4.84 | 230,262 |
| "Second Best" History Edition | 0 | - | 4.95 | 54,084 |
| World Leaders of the World Wars | 0 | - | 4.39 | 35,954 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.20 | 42,184 |
| Famous Empires in History | 0 | - | 4.82 | 113,214 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 70,163 |
| World Leaders by Picture | 0 | - | 4.37 | 251,704 |
| Canadian Prime Ministers Quiz | 0 | - | 4.63 | 53,465 |
| English Monarchs Quiz | 0 | - | 4.90 | 472,301 |
| OPEC Countries Quiz | 0 | - | 4.74 | 82,945 |
| Dictators by Picture | 0 | - | 4.24 | 46,804 |
| WWII Geography | 0 | - | 4.81 | 113,943 |
| WWII Figures by Picture | 0 | - | 4.83 | 45,282 |
| Former Countries by Territory Map | 0 | - | 4.96 | 93,203 |
| Empires by Maps | 0 | - | 4.99 | 105,989 |
| Prime Ministers of Australia | 0 | - | 4.50 | 30,010 |
| Ultimate 20th Century History Quiz | 0 | - | 4.84 | 49,727 |
| Political Quotes Quiz | 0 | - | 4.13 | 19,394 |
| The 7 Wonders of the Ancient World | 0 | - | 4.81 | 67,123 |
| Metals of Antiquity | 0 | - | 4.94 | 89,256 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 42,916 |
| History: What Came First? #1 | 0 | - | 4.86 | 97,458 |
| Spouses of World Leaders | 0 | - | 4.16 | 11,887 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 23,860 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 14,893 |
| Years in History #1 - Multiple Choice | 0 | - | 4.82 | 66,533 |
| European Secessionist Movements on a Map | 0 | - | 4.52 | 33,107 |
| Cradles of Civilization | 0 | - | 4.44 | 35,640 |
| Popular Royal Names | 0 | - | 4.27 | 120,576 |
| Materials From History #1 | 0 | - | 4.56 | 47,907 |
| Historical Countries by Ruler | 0 | - | 4.47 | 43,687 |
| Paramount Leaders of China | 0 | - | 4.33 | 10,463 |
| Name the Popes Quiz | 0 | - | 4.48 | 130,789 |
| Countries of the Popes | 0 | - | 4.80 | 121,942 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 684,671 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 140,161 |
| Famous Explorers | 0 | - | 4.64 | 34,366 |
| Answers by Time Period | 0 | - | 4.56 | 53,411 |
| Top 10 Oldest African Countries | 0 | - | 4.86 | 25,154 |
| History of The Netherlands | 0 | - | 4.44 | 16,461 |
| The Dictator Files: Chairman Mao | 0 | - | 4.33 | 19,644 |
| Countries Invaded by the USSR | 0 | - | 4.30 | 90,668 |
| The Life of King David | 0 | - | 4.44 | 13,733 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.96 | 38,704 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 263,993 |
| Countries with Nuclear Weapons | 0 | - | 4.90 | 246,033 |
| Countries with NO Military | 0 | - | 4.96 | 55,484 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 136,967 |
| All Disney Animated Movies | 0 | - | 4.82 | 422,893 |
| Countries by Number of Books Published | 0 | - | 4.94 | 68,000 |
| Top Five Countries by Religion | 0 | - | 4.91 | 155,627 |
| 7 Deadly Sins Quiz | 0 | - | 4.88 | 374,763 |
| Books of the Protestant Bible | 0 | - | 4.87 | 190,627 |
| Majority Muslim Countries | 0 | - | 4.98 | 327,674 |
| Influential Women in History | 0 | - | 4.43 | 31,541 |
| Former Flags | 0 | - | 4.98 | 100,408 |
| Years in History by Picture | 0 | - | 4.44 | 32,166 |
| Historical Events - AD or BC? | 0 | - | 4.75 | 54,792 |
| Materials From History #2 | 0 | - | 4.58 | 30,028 |
| Political Figures by Last Name #2 | 0 | - | 3.86 | 15,680 |
| Prime Ministers of Israel | 0 | - | 4.11 | 17,023 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.43 | 25,375 |
| Pope Facts | 0 | - | 4.43 | 29,795 |
| First Names of Painters | 0 | - | 4.40 | 57,795 |
| WWII Decoder | 0 | - | 4.44 | 50,964 |
| Name a Valid Answer - World War II | 0 | - | 4.52 | 51,812 |
| Cold War Decoder | 0 | - | 4.81 | 48,929 |
| 20th Century Dates Quiz | 0 | - | 4.54 | 38,605 |
| Events in History #2 | 0 | - | 4.48 | 69,046 |
| Events in History #4 | 0 | - | 4.46 | 42,458 |
| Name a Valid Year in History | 0 | - | 4.94 | 59,891 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.20 | 47,670 |
| Assassinations in History Quiz | 0 | - | 4.19 | 64,464 |
| Famous Seconds Quiz | 0 | - | 4.21 | 45,294 |
| Ages and Eras Quiz | 0 | - | 4.38 | 65,929 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.22 | 38,834 |
| Titled People Quiz #1 | 0 | - | 4.10 | 44,666 |
| Titled People Quiz #3 | 0 | - | 4.33 | 42,133 |
| Job Titles Quiz #1 | 0 | - | 4.21 | 74,672 |
| Female Historical Figures | 0 | - | 4.31 | 32,143 |
| Historical Blunders | 0 | - | 4.32 | 89,454 |
| Disasters in History | 0 | - | 4.41 | 24,690 |
| Territorial Accessions | 0 | - | 4.38 | 33,617 |
| People Known as "The Great" | 0 | - | 4.44 | 23,618 |
| This Day in History - July | 0 | - | 4.48 | 35,768 |
| This Day in History - August | 0 | - | 4.41 | 42,563 |
| This Day in History - September | 0 | - | 4.55 | 56,179 |
| This Day in History - October | 0 | - | 4.48 | 36,984 |
| This Day in History - January | 0 | - | 4.52 | 45,562 |
| This Day in History - March | 0 | - | 4.45 | 42,789 |
| Ancient Civilizations | 0 | - | 4.62 | 35,934 |
| The Places They Went #1 | 0 | - | 4.75 | 32,945 |
| Famous Inventors | 0 | - | 4.44 | 42,965 |
| European History for Dummies | 0 | - | 4.83 | 84,946 |
| Houses of British Monarchs | 0 | - | 4.54 | 63,035 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.12 | 981,320 |
| U.S. States by Governor Quiz | 0 | - | 4.42 | 17,445 |
| U.S. Political Parties in History | 0 | - | 4.43 | 26,876 |
| U.S. Government Agencies | 0 | - | 4.44 | 18,611 |
| Red State or Blue State Trait? | 0 | - | 4.45 | 51,934 |
| Countries with the Most Tanks | 0 | - | 4.85 | 80,410 |
| Coldest World Capitals | 0 | - | 4.96 | 130,573 |
| World Currency Quiz | 0 | - | 4.92 | 260,749 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 316,256 |
| Countries with the Most Millionaires | 0 | - | 4.84 | 98,467 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 45,478 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 69,876 |
| Cities with the Biggest Economies | 0 | - | 4.90 | 123,576 |
| Countries with the Most Christians | 0 | - | 4.92 | 131,289 |
| Least Christian Countries with Exceptions | 0 | - | 4.89 | 79,655 |
| Buddhist Countries | 0 | - | 4.96 | 136,361 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,052,973 |
| The 2nd Millennium BC | 0 | - | 4.54 | 13,870 |
| Body Parts in History and Culture | 0 | - | 4.42 | 34,050 |
| History Analogies #1 | 0 | - | 4.52 | 86,356 |
| History Analogies #2 | 0 | - | 4.48 | 73,846 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 148,587 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 63,331 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 50,761 |
| History Analogies #3 | 0 | - | 4.56 | 77,166 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.70 | 56,032 |
| Which Came First? | 0 | - | 4.34 | 72,092 |
| Valid Answer - World History #2 | 0 | - | 4.43 | 43,247 |
| Ancient Greece A-Z | 0 | - | 4.61 | 21,925 |
| States of the German Confederation in 1848 | 0 | - | 4.85 | 29,028 |
| Random History by Country | 0 | - | 4.52 | 33,137 |
| Valid Answer - World History #1 | 0 | - | 4.63 | 59,036 |
| Animals in World History | 0 | - | 4.70 | 42,482 |
| Places - Real or Fictional? | 0 | - | 4.57 | 47,631 |
| History True or False #3 | 0 | - | 4.51 | 40,903 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.64 | 22,219 |
| The Dictator Files: Fidel Castro | 0 | - | 4.15 | 11,512 |
| A to Z: Legendary Creatures | 0 | - | 4.29 | 50,431 |
| WWII First Names | 0 | - | 4.48 | 40,182 |
| WWII for Dummies | 0 | - | 4.78 | 97,969 |
| Cold War Trivia #1 | 0 | - | 4.41 | 55,342 |
| Events in History #3 | 0 | - | 4.38 | 69,485 |
| Events in History #1 | 0 | - | 4.33 | 153,244 |
| Events in Ancient History | 0 | - | 4.50 | 33,674 |
| People Who Died Young #1 | 0 | - | 4.24 | 62,643 |
| Deaths by Date and Cause #1 | 0 | - | 4.38 | 91,574 |
| Deaths by Date and Cause #2 | 0 | - | 4.16 | 64,757 |
| Famous Firsts #1 | 0 | - | 4.42 | 67,083 |
| Time Magazine Person of the Year | 0 | - | 4.55 | 69,727 |
| Invasions | 0 | - | 4.62 | 93,099 |
| Names for Warriors | 0 | - | 4.41 | 35,542 |
| This Day in History - April | 0 | - | 4.38 | 43,867 |
| This Day in History - May | 0 | - | 4.31 | 47,630 |
| This Day in History - June | 0 | - | 4.34 | 33,047 |
| This Day in History - November | 0 | - | 4.23 | 33,075 |
| This Day in History - December | 0 | - | 4.30 | 39,762 |
| This Day in History - February | 0 | - | 4.38 | 39,065 |
| The 19th Century | 0 | - | 4.52 | 65,701 |
| The 18th Century | 0 | - | 4.51 | 51,390 |
| The 16th Century | 0 | - | 4.74 | 57,329 |
| The 9th and 10th Century | 0 | - | 4.53 | 35,970 |
| The 21st Century | 0 | - | 4.49 | 100,238 |
| Battle to Country | 0 | - | 4.91 | 48,206 |
| History by Picture - N | 0 | - | 4.43 | 38,915 |
| History Multiple Choice #1 | 0 | - | 4.46 | 78,985 |
| History Multiple Choice #2 | 0 | - | 4.43 | 48,430 |
| History Multiple Choice #3 | 0 | - | 4.44 | 47,274 |
| Three Real and One Fake - World History | 0 | - | 4.45 | 36,475 |
| English Royal Consorts | 0 | - | 4.31 | 35,929 |
| The Reign of Queen Elizabeth I | 0 | - | 4.51 | 30,668 |
| British History A-Z | 0 | - | 4.42 | 41,677 |
| Dark Ages History | 0 | - | 4.42 | 32,186 |
| 30 Historical People You Probably Don't Know | 0 | - | 4.37 | 58,733 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 41,120 |
| World Capitals in the Answer | 0 | - | 4.95 | 71,842 |
| Most Powerful Countries Bordering Each Other | 0 | - | 4.87 | 53,889 |
| Monarchies of Europe | 0 | - | 4.89 | 92,418 |
| Monarchies of Asia | 0 | - | 4.96 | 67,681 |
| Capital Cities with the Least Precipitation | 0 | - | 4.88 | 28,234 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 185,602 |
| Countries with the Most Exports | 0 | - | 4.96 | 147,294 |
| Top Crude Oil Producing Countries | 0 | - | 4.90 | 180,570 |
| Countries by Oil Consumption | 0 | - | 4.96 | 115,870 |
| Richest Island Countries | 0 | - | 4.82 | 93,810 |
| Largest Economies in 2050 | 0 | - | 4.89 | 105,572 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 91,681 |
