| Metals of Antiquity | 0 | - | 4.94 | 92,992 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,158 |
| Military History Vocabulary | 0 | - | 4.91 | 66,716 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,695 |
| "Second Best" History Edition | 0 | - | 4.93 | 62,061 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,159 |
| Name the English Monarchs | 0 | - | 4.92 | 498,727 |
| WWII Geography | 0 | - | 4.81 | 119,454 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,631 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,774 |
| Empires by Maps | 0 | - | 4.98 | 118,779 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,922 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,317 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,139 |
| Planets By Picture Quiz | 0 | - | 4.49 | 56,290 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,245 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,087 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,250 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,537 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,249 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,311 |
| Words for Leaders | 0 | - | 4.77 | 255,451 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,712 |
| Albert Einstein Trivia | 0 | - | 4.58 | 18,324 |
| The Diseases They Had | 0 | - | 4.15 | 13,916 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,719 |
| Influential Women in History | 0 | - | 4.42 | 35,181 |
| Cradles of Civilization | 0 | - | 4.46 | 39,243 |
| Popular Royal Names | 0 | - | 4.27 | 124,556 |
| Materials From History #1 | 0 | - | 4.56 | 51,155 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,249 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,158 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,810 |
| First Names of Painters | 0 | - | 4.43 | 59,642 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,338 |
| Famous Explorers | 0 | - | 4.58 | 36,003 |
| Famous Empires by Description | 0 | - | 4.73 | 118,015 |
| Answers by Time Period | 0 | - | 4.63 | 55,327 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,513 |
| History of The Netherlands | 0 | - | 4.46 | 17,337 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,684 |
| UN Secretaries-General | 0 | - | 4.40 | 7,771 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,556 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.95 | 40,739 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 54,919 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,561 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 59,811 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,230 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,411 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,988 |
| Countries with NO Military | 0 | - | 4.97 | 61,283 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,975 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,990 |
| NATO Countries | 0 | - | 4.98 | 276,720 |
| EU Countries Quiz | 0 | - | 4.99 | 270,512 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,341 |
| 7 Deadly Sins | 0 | - | 4.88 | 395,764 |
| Books of the Protestant Bible | 0 | - | 4.89 | 207,687 |
| Majority Muslim Countries | 0 | - | 4.98 | 369,774 |
| Former Flags | 0 | - | 4.97 | 106,865 |
| Years in History by Picture | 0 | - | 4.44 | 35,166 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,242 |
| Materials From History #2 | 0 | - | 4.59 | 31,300 |
| WWII Decoder | 0 | - | 4.41 | 53,086 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,817 |
| Cold War Decoder | 0 | - | 4.83 | 51,996 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,331 |
| Events in History #2 | 0 | - | 4.49 | 71,473 |
| Events in History #4 | 0 | - | 4.44 | 44,140 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,526 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,855 |
| Assassinations in History | 0 | - | 4.21 | 66,013 |
| Famous Seconds | 0 | - | 4.22 | 46,418 |
| Ages and Eras | 0 | - | 4.38 | 67,515 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,421 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,664 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,069 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,851 |
| Female Historical Figures | 0 | - | 4.27 | 33,133 |
| Historical Blunders | 0 | - | 4.33 | 91,744 |
| Territorial Accessions | 0 | - | 4.38 | 34,671 |
| People Known as "The Great" | 0 | - | 4.46 | 24,558 |
| This Day in History - July | 0 | - | 4.49 | 36,379 |
| This Day in History - August | 0 | - | 4.42 | 43,266 |
| This Day in History - September | 0 | - | 4.55 | 57,287 |
| This Day in History - October | 0 | - | 4.49 | 37,558 |
| This Day in History - January | 0 | - | 4.50 | 46,592 |
| This Day in History - March | 0 | - | 4.45 | 43,555 |
| Ancient Civilizations | 0 | - | 4.63 | 37,786 |
| The Places They Went #1 | 0 | - | 4.74 | 33,456 |
| Famous Inventors | 0 | - | 4.43 | 43,469 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,550 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,306 |
| European History for Dummies | 0 | - | 4.83 | 89,410 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,636 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,363 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,011,408 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,091,758 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,297 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,714 |
| Countries with Glaciers | 0 | - | 4.97 | 104,736 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,424 |
| Coldest World Capitals | 0 | - | 4.95 | 133,108 |
| World Currency Quiz | 0 | - | 4.92 | 299,172 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,192 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,292 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,830 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,238 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,829 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,700 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,061 |
| Buddhist Countries | 0 | - | 4.96 | 143,096 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,471 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,716 |
| History Analogies #1 | 0 | - | 4.53 | 89,804 |
| History Analogies #2 | 0 | - | 4.49 | 77,031 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 152,210 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 64,993 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 51,955 |
| History Analogies #3 | 0 | - | 4.61 | 80,469 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,199 |
| Which Came First? | 0 | - | 4.37 | 74,444 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,015 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,608 |
| Random History by Country | 0 | - | 4.53 | 34,692 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,615 |
| Animals in World History | 0 | - | 4.74 | 44,259 |
| People - Real or Fictional? | 0 | - | 4.56 | 58,524 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,396 |
| History True or False #3 | 0 | - | 4.43 | 55,993 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,676 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,148 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.19 | 47,942 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,408 |
| A to Z: Legendary Creatures | 0 | - | 4.26 | 52,803 |
| WWII First Names | 0 | - | 4.44 | 41,597 |
| WWII for Dummies | 0 | - | 4.80 | 103,980 |
| Cold War Trivia #1 | 0 | - | 4.41 | 57,008 |
| Events in History #3 | 0 | - | 4.40 | 71,484 |
| Events in History #1 | 0 | - | 4.34 | 157,343 |
| Events in Ancient History | 0 | - | 4.50 | 35,755 |
| People Who Died Young #1 | 0 | - | 4.24 | 63,559 |
| Deaths by Date and Cause #1 | 0 | - | 4.38 | 94,948 |
| Deaths by Date and Cause #2 | 0 | - | 4.15 | 67,533 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,624 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,977 |
| Political Quotes | 0 | - | 4.17 | 19,820 |
| This Day in History - April | 0 | - | 4.40 | 44,398 |
| This Day in History - May | 0 | - | 4.33 | 48,266 |
| This Day in History - June | 0 | - | 4.36 | 33,440 |
| This Day in History - November | 0 | - | 4.24 | 33,542 |
| This Day in History - December | 0 | - | 4.32 | 40,457 |
| This Day in History - February | 0 | - | 4.38 | 39,713 |
| The 19th Century | 0 | - | 4.53 | 67,905 |
| The 18th Century | 0 | - | 4.52 | 53,138 |
| The 16th Century | 0 | - | 4.77 | 58,753 |
| The 9th and 10th Century | 0 | - | 4.54 | 37,556 |
| The 21st Century | 0 | - | 4.48 | 105,386 |
| Battle to Country | 0 | - | 4.91 | 52,623 |
| The Life of King David | 0 | - | 4.37 | 14,069 |
| History Multiple Choice #1 | 0 | - | 4.46 | 81,564 |
| Years in History #2 - Multiple Choice | 0 | - | 4.43 | 41,440 |
| History Multiple Choice #2 | 0 | - | 4.43 | 49,829 |
| History Multiple Choice #3 | 0 | - | 4.45 | 48,566 |
| History Multiple Choice #5 | 0 | - | 4.49 | 32,288 |
| Three Real and One Fake - World History | 0 | - | 4.44 | 38,209 |
| English Royal Consorts | 0 | - | 4.37 | 37,216 |
| British History A-Z #1 | 0 | - | 4.45 | 46,165 |
| Kings of France Quiz | 0 | - | 4.20 | 32,583 |
| Dark Ages History | 0 | - | 4.42 | 32,686 |
| 30 Historical People You Probably Don't Know | 0 | - | 4.36 | 60,853 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 335,808 |
| The Sun Quiz | 0 | - | 4.93 | 34,192 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,395 |
| Monarchies of Europe | 0 | - | 4.90 | 97,456 |
| Monarchies of Asia | 0 | - | 4.97 | 70,674 |
| Capital Cities with the Least Precipitation | 0 | - | 4.89 | 29,059 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,111 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,327 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,634 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,611 |
| Richest Island Countries | 0 | - | 4.84 | 99,653 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,751 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,775 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 262,531 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 103,081 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,821 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,484 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,752 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,219 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,337 |
| Orthodox Countries | 0 | - | 4.91 | 130,546 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,452 |
| Capital Cities by Cartoon Riddles | 0 | - | 4.98 | 86,754 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,176 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,539 |
| Countries that Start with A | 0 | - | 4.97 | 2,149,233 |
| Countries that Start with B | 0 | - | 4.95 | 2,281,951 |
| Countries that Start with C | 0 | - | 4.96 | 1,812,040 |
| Countries that Start with D | 0 | - | 4.96 | 702,716 |
