| Words for Leaders | 0 | - | 4.77 | 255,577 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,557 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,179 |
| Prime Ministers of the UK | 0 | - | 4.96 | 435,539 |
| World Leaders by Picture | 0 | - | 4.36 | 263,835 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,173 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,972 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,253 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,094 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,263 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,560 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,728 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,446 |
| Dictators by Picture | 0 | - | 4.18 | 48,930 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,685 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.19 | 48,023 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,179 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,776 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,295 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,693 |
| UN Secretaries-General | 0 | - | 4.40 | 7,771 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,885 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,741 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,558 |
| Name the English Monarchs | 0 | - | 4.92 | 498,994 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,593 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,134 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,855 |
| Empires by Maps | 0 | - | 4.98 | 118,886 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,153 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,680 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,344 |
| Political Quotes | 0 | - | 4.17 | 19,824 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,150 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,632 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,805 |
| Metals of Antiquity | 0 | - | 4.94 | 93,026 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,283 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,366 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,016 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,269 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,363 |
| Countries of the Popes | 0 | - | 4.79 | 127,405 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,997 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,755 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,422 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,533 |
| Influential Women in History | 0 | - | 4.42 | 35,215 |
| Cradles of Civilization | 0 | - | 4.46 | 39,266 |
| Materials From History #1 | 0 | - | 4.56 | 51,237 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,279 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,596 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,658 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,365 |
| Famous Explorers | 0 | - | 4.58 | 36,011 |
| Famous Empires by Description | 0 | - | 4.73 | 118,045 |
| Answers by Time Period | 0 | - | 4.63 | 55,348 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,055 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,767 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 54,967 |
| NATO Countries | 0 | - | 4.98 | 277,039 |
| EU Countries Quiz | 0 | - | 4.99 | 270,774 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,789 |
| Former Flags | 0 | - | 4.97 | 106,929 |
| Years in History by Picture | 0 | - | 4.44 | 35,196 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,269 |
| Materials From History #2 | 0 | - | 4.59 | 31,345 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,638 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,342 |
| WWII First Names | 0 | - | 4.44 | 41,609 |
| Cold War Decoder | 0 | - | 4.83 | 52,021 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,337 |
| Events in History #2 | 0 | - | 4.49 | 71,486 |
| Events in History #4 | 0 | - | 4.44 | 44,145 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,581 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,861 |
| Assassinations in History | 0 | - | 4.21 | 66,035 |
| Famous Seconds | 0 | - | 4.22 | 46,425 |
| Ages and Eras | 0 | - | 4.38 | 67,531 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,424 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,670 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,077 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,865 |
| Female Historical Figures | 0 | - | 4.27 | 33,143 |
| Historical Blunders | 0 | - | 4.33 | 91,764 |
| Territorial Accessions | 0 | - | 4.38 | 34,677 |
| People Known as "The Great" | 0 | - | 4.46 | 24,569 |
| This Day in History - July | 0 | - | 4.49 | 36,384 |
| This Day in History - August | 0 | - | 4.42 | 43,277 |
| This Day in History - September | 0 | - | 4.55 | 57,301 |
| This Day in History - October | 0 | - | 4.49 | 37,564 |
| This Day in History - January | 0 | - | 4.50 | 46,599 |
| This Day in History - March | 0 | - | 4.45 | 43,558 |
| Ancient Civilizations | 0 | - | 4.63 | 37,800 |
| The Places They Went #1 | 0 | - | 4.74 | 33,460 |
| Famous Inventors | 0 | - | 4.43 | 43,475 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,575 |
| European History for Dummies | 0 | - | 4.83 | 89,442 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,649 |
| British History A-Z #1 | 0 | - | 4.45 | 46,199 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,380 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,011,598 |
| U.S. States by Governor | 0 | - | 4.43 | 17,997 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,600 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,207 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,573 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,041 |
| Middle Earth Geography | 0 | - | 4.56 | 39,578 |
| Lord of the Rings Trivia | 0 | - | 4.53 | 80,920 |
| Members of the Fellowship of the Ring | 0 | - | 4.74 | 45,586 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,836 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,148 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,720 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,169 |
| History Analogies #1 | 0 | - | 4.53 | 89,819 |
| History Analogies #2 | 0 | - | 4.49 | 77,044 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 152,236 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 65,003 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 51,961 |
| History Analogies #3 | 0 | - | 4.61 | 80,486 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,221 |
| Which Came First? | 0 | - | 4.37 | 74,470 |
| Random History by Country | 0 | - | 4.53 | 34,700 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,639 |
| Animals in World History | 0 | - | 4.74 | 44,283 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,412 |
| History True or False #3 | 0 | - | 4.43 | 56,025 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,841 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,340 |
| Pope Facts | 0 | - | 4.39 | 31,090 |
| A to Z: Legendary Creatures | 0 | - | 4.26 | 52,827 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,175 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,306 |
| Cold War Trivia #1 | 0 | - | 4.41 | 57,027 |
| Events in History #3 | 0 | - | 4.40 | 71,497 |
| Events in History #1 | 0 | - | 4.34 | 157,372 |
| Events in Ancient History | 0 | - | 4.50 | 35,770 |
| People Who Died Young #1 | 0 | - | 4.24 | 63,567 |
| Deaths by Date and Cause #1 | 0 | - | 4.38 | 94,975 |
| Deaths by Date and Cause #2 | 0 | - | 4.15 | 67,555 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,673 |
| Countries That Were Invaded | 0 | - | 4.54 | 97,010 |
| This Day in History - April | 0 | - | 4.40 | 44,404 |
| This Day in History - May | 0 | - | 4.33 | 48,271 |
| This Day in History - June | 0 | - | 4.36 | 33,443 |
| This Day in History - November | 0 | - | 4.24 | 33,546 |
| This Day in History - December | 0 | - | 4.32 | 40,465 |
| This Day in History - February | 0 | - | 4.38 | 39,714 |
| The 19th Century | 0 | - | 4.53 | 67,921 |
| The 18th Century | 0 | - | 4.52 | 53,149 |
| The 16th Century | 0 | - | 4.77 | 58,765 |
| The 9th and 10th Century | 0 | - | 4.54 | 37,564 |
| The 21st Century | 0 | - | 4.48 | 105,427 |
| Military History Vocabulary | 0 | - | 4.91 | 66,744 |
| Battle to Country | 0 | - | 4.91 | 52,665 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,766 |
| The Life of King David | 0 | - | 4.37 | 14,070 |
| History Multiple Choice #1 | 0 | - | 4.46 | 81,593 |
| Years in History #2 - Multiple Choice | 0 | - | 4.43 | 41,453 |
| History Multiple Choice #2 | 0 | - | 4.43 | 49,849 |
| History Multiple Choice #3 | 0 | - | 4.45 | 48,575 |
| History Multiple Choice #5 | 0 | - | 4.49 | 32,303 |
| Three Real and One Fake - World History | 0 | - | 4.44 | 38,225 |
| English Royal Consorts | 0 | - | 4.37 | 37,226 |
| Kings of France Quiz | 0 | - | 4.20 | 32,592 |
| Dark Ages History | 0 | - | 4.42 | 32,688 |
| German History A-Z | 0 | - | 4.49 | 24,469 |
| 30 Historical People You Probably Don't Know | 0 | - | 4.36 | 60,862 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 335,958 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,539 |
| Senators Who Ran For President | 0 | - | 4.24 | 16,998 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 21,999 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,591 |
| Lord of the Rings - Races | 0 | - | 4.24 | 58,469 |
| The Ultimate LOTR Character Quiz - The Books | 0 | - | 4.61 | 20,542 |
| Game of Thrones Houses | 0 | - | 4.52 | 86,575 |
| Game of Thrones Characters by Death | 0 | - | 4.41 | 54,332 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,456 |
| Monarchies of Europe | 0 | - | 4.90 | 97,499 |
| Monarchies of Asia | 0 | - | 4.97 | 70,698 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,409 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,286 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,576 |
| Brand Logos Quiz #1 | 0 | - | 4.83 | 2,406,569 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,585 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,517 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,418 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,231 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,806 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,831 |
| Countries Mentioned in the Bible | 0 | - | 4.96 | 66,252 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,306 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,391 |
| Orthodox Countries | 0 | - | 4.91 | 130,613 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,210 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,563 |
| Largest City on Every Continent A-Z | 0 | - | 4.97 | 37,834 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 334,018 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,775 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,048 |
