| Words for Leaders | 0 | - | 4.77 | 254,848 |
| Political Figures by Last Name #1 | 0 | - | 4.56 | 67,332 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,082 |
| World Leaders by Picture | 0 | - | 4.36 | 263,144 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,955 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,010 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,604 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,197 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,023 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,162 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,419 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,593 |
| Dictators by Picture | 0 | - | 4.17 | 48,828 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,231 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,030 |
| "Second Best" History Edition | 0 | - | 4.93 | 61,605 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,277 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,621 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,633 |
| UN Secretaries-General | 0 | - | 4.40 | 7,753 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,824 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.18 | 46,789 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,530 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,735 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,474 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,636 |
| Name the English Monarchs | 0 | - | 4.92 | 497,301 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,287 |
| Empires by Maps | 0 | - | 4.98 | 118,120 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,096 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,139 |
| Political Quotes | 0 | - | 4.17 | 19,797 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,032 |
| Metals of Antiquity | 0 | - | 4.94 | 92,809 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,077 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,051 |
| History - Did They Have It? | 0 | - | 4.84 | 61,020 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,572 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,610 |
| Ancient Greek Words | 0 | - | 4.92 | 110,530 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,602 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,714 |
| Influential Women in History | 0 | - | 4.42 | 34,890 |
| Cradles of Civilization | 0 | - | 4.46 | 38,945 |
| Materials From History #1 | 0 | - | 4.56 | 50,513 |
| Historical Countries by Ruler | 0 | - | 4.48 | 47,976 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,985 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,238 |
| Name the Popes Quiz | 0 | - | 4.47 | 136,936 |
| Countries of the Popes | 0 | - | 4.79 | 127,059 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 703,917 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,060 |
| Famous Explorers | 0 | - | 4.58 | 35,909 |
| Famous Empires by Description | 0 | - | 4.70 | 117,456 |
| Answers by Time Period | 0 | - | 4.63 | 55,219 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,388 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,559 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,469 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,905 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.95 | 40,645 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 54,796 |
| All Modern-Day Countries Ever Controlled by the British | 0 | - | 4.81 | 49,297 |
| NATO Countries | 0 | - | 4.98 | 275,044 |
| EU Countries Quiz | 0 | - | 4.99 | 269,379 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,703 |
| American Political Words | 0 | - | 4.39 | 23,326 |
| Former Flags | 0 | - | 4.97 | 106,513 |
| Years in History by Picture | 0 | - | 4.44 | 35,041 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,139 |
| Materials From History #2 | 0 | - | 4.59 | 30,891 |
| Historic Orient Express Routes Map | 0 | - | 5.00 | 52,889 |
| Cold War Decoder | 0 | - | 4.83 | 51,872 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,297 |
| Events in History #2 | 0 | - | 4.49 | 71,372 |
| Events in History #4 | 0 | - | 4.44 | 44,064 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,256 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,783 |
| Assassinations in History | 0 | - | 4.20 | 65,916 |
| Famous Seconds | 0 | - | 4.22 | 46,363 |
| Ages and Eras Quiz | 0 | - | 4.38 | 67,413 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,374 |
| Titled People Quiz #1 | 0 | - | 4.10 | 45,582 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,003 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,799 |
| Female Historical Figures | 0 | - | 4.31 | 33,068 |
| Historical Blunders | 0 | - | 4.33 | 91,633 |
| Territorial Accessions | 0 | - | 4.38 | 34,608 |
| People Known as "The Great" | 0 | - | 4.46 | 24,489 |
| This Day in History - July | 0 | - | 4.49 | 36,355 |
| This Day in History - August | 0 | - | 4.41 | 43,232 |
| This Day in History - September | 0 | - | 4.55 | 57,231 |
| This Day in History - October | 0 | - | 4.49 | 37,540 |
| This Day in History - January | 0 | - | 4.53 | 46,548 |
| This Day in History - March | 0 | - | 4.45 | 43,523 |
| Ancient Civilizations | 0 | - | 4.63 | 37,718 |
| The Places They Went #1 | 0 | - | 4.74 | 33,432 |
| Famous Inventors | 0 | - | 4.43 | 43,439 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,404 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,244 |
| European History for Dummies | 0 | - | 4.82 | 89,216 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,249 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,009,933 |
| U.S. States by Governor | 0 | - | 4.43 | 17,971 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,552 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,524 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 54,873 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,230 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,785 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,671 |
| Body Parts in History and Culture | 0 | - | 4.42 | 34,993 |
| History Analogies #1 | 0 | - | 4.53 | 89,740 |
| History Analogies #2 | 0 | - | 4.49 | 76,957 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 152,058 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 64,926 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 51,904 |
| History Analogies #3 | 0 | - | 4.61 | 80,395 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,088 |
| Which Came First? | 0 | - | 4.37 | 74,354 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,480 |
| Random History by Country | 0 | - | 4.53 | 34,634 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,490 |
| Animals in World History | 0 | - | 4.74 | 44,183 |
| People - Real or Fictional? | 0 | - | 4.56 | 58,398 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,324 |
| History True or False #3 | 0 | - | 4.43 | 55,865 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,291 |
| A to Z: Legendary Creatures | 0 | - | 4.26 | 52,698 |
| WWII First Names | 0 | - | 4.45 | 41,527 |
| Cold War Trivia #1 | 0 | - | 4.41 | 56,896 |
| Events in History #3 | 0 | - | 4.40 | 71,404 |
| Events in History #1 | 0 | - | 4.34 | 157,177 |
| Events in Ancient History | 0 | - | 4.50 | 35,665 |
| People Who Died Young #1 | 0 | - | 4.24 | 63,516 |
| Deaths by Date and Cause #1 | 0 | - | 4.37 | 94,831 |
| Deaths by Date and Cause #2 | 0 | - | 4.15 | 67,434 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,472 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,861 |
| This Day in History - April | 0 | - | 4.39 | 44,375 |
| This Day in History - May | 0 | - | 4.32 | 48,235 |
| This Day in History - June | 0 | - | 4.35 | 33,421 |
| This Day in History - November | 0 | - | 4.24 | 33,521 |
| This Day in History - December | 0 | - | 4.31 | 40,439 |
| This Day in History - February | 0 | - | 4.38 | 39,686 |
| The 19th Century | 0 | - | 4.53 | 67,846 |
| The 18th Century | 0 | - | 4.52 | 53,097 |
| The 16th Century | 0 | - | 4.77 | 58,716 |
| The 9th and 10th Century | 0 | - | 4.54 | 37,512 |
| The 21st Century | 0 | - | 4.48 | 105,203 |
| Military History Vocabulary | 0 | - | 4.91 | 66,567 |
| Battle to Country | 0 | - | 4.91 | 52,420 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,634 |
| The Life of King David | 0 | - | 4.37 | 14,054 |
| History Multiple Choice #1 | 0 | - | 4.46 | 81,468 |
| Years in History #2 - Multiple Choice | 0 | - | 4.43 | 41,380 |
| History Multiple Choice #2 | 0 | - | 4.43 | 49,769 |
| History Multiple Choice #3 | 0 | - | 4.45 | 48,509 |
| History Multiple Choice #5 | 0 | - | 4.49 | 32,243 |
| Three Real and One Fake - World History | 0 | - | 4.44 | 38,164 |
| Trace the Route of Marco Polo on a Map | 0 | - | 5.00 | 41,882 |
| English Royal Consorts | 0 | - | 4.37 | 37,138 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,580 |
| British History A-Z #1 | 0 | - | 4.45 | 45,731 |
| Kings of France Quiz | 0 | - | 4.20 | 32,534 |
| Dark Ages History | 0 | - | 4.42 | 32,667 |
| 30 Historical People You Probably Don't Know | 0 | - | 4.36 | 60,744 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 335,205 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,132 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,132 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,510 |
| Brand Name Vocabulary | 0 | - | 4.16 | 37,987 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,203 |
| Monarchies of Europe | 0 | - | 4.90 | 97,191 |
| Monarchies of Asia | 0 | - | 4.97 | 70,528 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,649 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,455 |
| Countries Mentioned in the Bible | 0 | - | 4.96 | 65,945 |
| Countries with the Most Catholics | 0 | - | 4.90 | 107,862 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,098 |
| Orthodox Countries | 0 | - | 4.91 | 130,239 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,031 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,420 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 331,902 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,374 |
| History Multiple Choice #6 | 0 | - | 4.46 | 17,899 |
| The 7th, 8th, 9th and 10th Century BC | 0 | - | 4.67 | 17,681 |
| History General Knowledge #13 | 0 | - | 4.69 | 48,247 |
| Musicians Who Died Young | 0 | - | 4.39 | 107,336 |
| History True or False #4 | 0 | - | 4.47 | 32,680 |
| Current Events by Year, 1950–1969 | 0 | - | 4.35 | 46,454 |
| Current Events by Year, 1910–1929 | 0 | - | 4.27 | 47,309 |
| Groups of Things - History #1 | 0 | - | 4.40 | 93,632 |
| Groups of Things - History #2 | 0 | - | 4.39 | 79,029 |
| History Analogies #4 | 0 | - | 4.26 | 72,531 |
| History Groups of Two | 0 | - | 4.34 | 40,520 |
| People Born on Islands | 0 | - | 4.39 | 52,717 |
| Spanish History A-Z | 0 | - | 4.36 | 18,994 |
| Italian History A-Z | 0 | - | 4.21 | 17,337 |
| 4-Letter History Chain #1 | 0 | - | 4.41 | 84,676 |
| 5-Letter History Chain #3 | 0 | - | 4.47 | 66,060 |
| 6-Letter History Chain #2 | 0 | - | 4.53 | 57,214 |
