| Words for Leaders | 0 | - | 4.77 | 256,849 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,854 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,391 |
| World Leaders by Picture | 0 | - | 4.36 | 264,877 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,432 |
| Prime Ministers of the UK | 0 | - | 4.95 | 437,919 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,498 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,365 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,195 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,397 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,793 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,945 |
| Dictators by Picture | 0 | - | 4.18 | 49,097 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,785 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,405 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,788 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,316 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,815 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,810 |
| UN Secretaries-General | 0 | - | 4.40 | 7,786 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,961 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.20 | 48,658 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,600 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,838 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,803 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,853 |
| Name the English Monarchs | 0 | - | 4.91 | 501,581 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,572 |
| Empires by Maps | 0 | - | 4.98 | 120,000 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,250 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,616 |
| Political Quotes | 0 | - | 4.17 | 19,873 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,332 |
| Metals of Antiquity | 0 | - | 4.95 | 93,324 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,594 |
| History: What Came First? #1 | 0 | - | 4.87 | 105,084 |
| History - Did They Have It? | 0 | - | 4.84 | 61,688 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,701 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,766 |
| Ancient Greek Words | 0 | - | 4.93 | 111,368 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,199 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,922 |
| Influential Women in History | 0 | - | 4.42 | 35,510 |
| Cradles of Civilization | 0 | - | 4.46 | 39,564 |
| Materials From History #1 | 0 | - | 4.56 | 51,484 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,543 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,052 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,312 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,923 |
| Countries of the Popes | 0 | - | 4.79 | 127,886 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,702 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,747 |
| Famous Explorers | 0 | - | 4.58 | 36,123 |
| Famous Empires by Description | 0 | - | 4.73 | 118,332 |
| Answers by Time Period | 0 | - | 4.64 | 55,520 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,890 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,653 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,934 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,257 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,952 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,242 |
| NATO Countries | 0 | - | 4.98 | 279,342 |
| EU Countries Quiz | 0 | - | 4.99 | 272,932 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,927 |
| American Political Words | 0 | - | 4.39 | 23,396 |
| Former Flags | 0 | - | 4.97 | 107,487 |
| Years in History by Picture | 0 | - | 4.44 | 35,444 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,528 |
| Materials From History #2 | 0 | - | 4.59 | 31,454 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,879 |
| Historic Orient Express Routes Map | 0 | - | 4.99 | 53,406 |
| People Who Have Been Considered Gods | 0 | - | 4.49 | 24,352 |
| Cold War Decoder | 0 | - | 4.83 | 52,259 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,386 |
| Events in History #2 | 0 | - | 4.49 | 71,647 |
| Events in History #4 | 0 | - | 4.44 | 44,264 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,042 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,964 |
| Assassinations in History | 0 | - | 4.21 | 66,157 |
| Famous Seconds | 0 | - | 4.22 | 46,550 |
| Ages and Eras | 0 | - | 4.39 | 67,652 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,473 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,764 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,145 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,958 |
| Female Historical Figures | 0 | - | 4.28 | 33,224 |
| Historical Blunders | 0 | - | 4.34 | 91,900 |
| Territorial Accessions | 0 | - | 4.36 | 34,762 |
| People Known as "The Great" | 0 | - | 4.46 | 24,642 |
| This Day in History - July | 0 | - | 4.49 | 36,435 |
| This Day in History - August | 0 | - | 4.42 | 43,338 |
| This Day in History - September | 0 | - | 4.55 | 57,404 |
| This Day in History - October | 0 | - | 4.49 | 37,606 |
| This Day in History - January | 0 | - | 4.50 | 46,681 |
| This Day in History - March | 0 | - | 4.45 | 43,641 |
| Ancient Civilizations | 0 | - | 4.64 | 37,919 |
| The Places They Went #1 | 0 | - | 4.74 | 33,517 |
| Famous Inventors | 0 | - | 4.44 | 43,525 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,819 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,464 |
| European History for Dummies | 0 | - | 4.83 | 89,764 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,745 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,583 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,013,219 |
| U.S. States by Governor | 0 | - | 4.43 | 18,045 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,671 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,651 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,251 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,807 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,904 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,814 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,250 |
| History Analogies #1 | 0 | - | 4.53 | 89,923 |
| History Analogies #2 | 0 | - | 4.49 | 77,166 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 152,506 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 65,128 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 52,056 |
| Groups of Things - History #1 | 0 | - | 4.41 | 94,009 |
| History Analogies #3 | 0 | - | 4.61 | 80,608 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,404 |
| Which Came First? | 0 | - | 4.37 | 74,710 |
| Random History by Country | 0 | - | 4.53 | 34,818 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,816 |
| Animals in World History | 0 | - | 4.74 | 44,433 |
| People - Real or Fictional? | 0 | - | 4.56 | 58,751 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,544 |
| History True or False #3 | 0 | - | 4.43 | 56,761 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,417 |
| A to Z: Legendary Creatures | 0 | - | 4.26 | 52,970 |
| WWII First Names | 0 | - | 4.44 | 41,749 |
| Cold War Trivia #1 | 0 | - | 4.42 | 57,213 |
| Events in History #3 | 0 | - | 4.40 | 71,646 |
| Events in History #1 | 0 | - | 4.34 | 157,635 |
| Events in Ancient History | 0 | - | 4.50 | 35,931 |
| People Who Died Young #1 | 0 | - | 4.24 | 63,642 |
| Deaths by Date and Cause #1 | 0 | - | 4.38 | 95,159 |
| Deaths by Date and Cause #2 | 0 | - | 4.15 | 67,714 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,997 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,327 |
| This Day in History - April | 0 | - | 4.40 | 44,450 |
| This Day in History - May | 0 | - | 4.33 | 48,345 |
| This Day in History - June | 0 | - | 4.32 | 33,489 |
| This Day in History - November | 0 | - | 4.24 | 33,591 |
| This Day in History - December | 0 | - | 4.32 | 40,521 |
| This Day in History - February | 0 | - | 4.38 | 39,764 |
| The 19th Century | 0 | - | 4.53 | 68,087 |
| The 18th Century | 0 | - | 4.53 | 53,266 |
| The 16th Century | 0 | - | 4.77 | 58,856 |
| The 9th and 10th Century | 0 | - | 4.54 | 37,647 |
| The 21st Century | 0 | - | 4.48 | 105,830 |
| Military History Vocabulary | 0 | - | 4.91 | 67,044 |
| Battle to Country | 0 | - | 4.91 | 53,161 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,908 |
| The Life of King David | 0 | - | 4.37 | 14,114 |
| History Multiple Choice #1 | 0 | - | 4.44 | 81,866 |
| Years in History #2 - Multiple Choice | 0 | - | 4.43 | 41,613 |
| History Multiple Choice #2 | 0 | - | 4.43 | 50,005 |
| History Multiple Choice #3 | 0 | - | 4.45 | 48,706 |
| History Multiple Choice #5 | 0 | - | 4.49 | 32,431 |
| Three Real and One Fake - World History | 0 | - | 4.44 | 38,342 |
| Trace the Route of Marco Polo on a Map | 0 | - | 5.00 | 42,217 |
| English Royal Consorts | 0 | - | 4.37 | 37,323 |
| British History A-Z #1 | 0 | - | 4.45 | 46,405 |
| Kings of France Quiz | 0 | - | 4.20 | 32,688 |
| Dark Ages History | 0 | - | 4.42 | 32,742 |
| 30 Historical People You Probably Don't Know | 0 | - | 4.36 | 60,974 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 337,123 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,185 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,326 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,747 |
| Brand Name Vocabulary | 0 | - | 4.16 | 38,049 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,891 |
| Monarchies of Europe | 0 | - | 4.90 | 97,971 |
| Monarchies of Asia | 0 | - | 4.97 | 70,987 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,074 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,482 |
| Countries Mentioned in the Bible | 0 | - | 4.96 | 66,822 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,108 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,920 |
| Orthodox Countries | 0 | - | 4.92 | 131,328 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,632 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,910 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 337,425 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,781 |
| History Multiple Choice #6 | 0 | - | 4.46 | 18,062 |
| The 7th, 8th, 9th and 10th Century BC | 0 | - | 4.67 | 17,792 |
| History General Knowledge #13 | 0 | - | 4.69 | 49,156 |
| Musicians Who Died Young | 0 | - | 4.39 | 108,107 |
| History True or False #4 | 0 | - | 4.48 | 33,359 |
| Current Events by Year, 1950–1969 | 0 | - | 4.35 | 46,574 |
| Current Events by Year, 1910–1929 | 0 | - | 4.27 | 47,414 |
| Groups of Things - History #2 | 0 | - | 4.39 | 79,281 |
| History Analogies #4 | 0 | - | 4.26 | 72,860 |
| History Groups of Two | 0 | - | 4.31 | 40,666 |
| People Born on Islands | 0 | - | 4.39 | 52,883 |
| Spanish History A-Z | 0 | - | 4.37 | 19,270 |
| Italian History A-Z | 0 | - | 4.21 | 17,675 |
| 4-Letter History Chain #1 | 0 | - | 4.41 | 84,957 |
| 5-Letter History Chain #3 | 0 | - | 4.47 | 66,366 |
| 6-Letter History Chain #2 | 0 | - | 4.51 | 57,470 |
