| Metals of Antiquity | 0 | - | 4.94 | 84,884 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 94,787 |
| Albert Einstein Quiz | 0 | - | 4.54 | 17,249 |
| Countries by Change in Carbon Dioxide Emissions | 0 | - | 4.92 | 47,880 |
| Countries with the Most Forest | 0 | - | 4.88 | 136,057 |
| Countries with Glaciers | 0 | - | 4.98 | 94,365 |
| Body Parts in History and Culture | 0 | - | 4.48 | 32,602 |
| "Second Best" History Edition | 0 | - | 4.94 | 45,365 |
| Famous Empires in History | 0 | - | 4.82 | 102,028 |
| Countries that Desalinate the Most Water | 0 | - | 4.79 | 36,432 |
| Former Countries by Territory Map | 0 | - | 4.96 | 84,839 |
| Empires by Maps | 0 | - | 4.98 | 92,772 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 45,805 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 32,111 |
| Worst Plastic Polluting Countries | 0 | - | 4.55 | 59,693 |
| Least-Forested Countries | 0 | - | 4.51 | 60,415 |
| Tropical Rainforest Countries | 0 | - | 4.65 | 68,915 |
| Cradles of Civilization | 0 | - | 4.41 | 31,805 |
| Materials From History #1 | 0 | - | 4.57 | 34,396 |
| Animals in World History | 0 | - | 4.82 | 39,660 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 39,384 |
| History: What Came First? #1 | 0 | - | 4.82 | 90,228 |
| Mythical Creatures Quiz #1 | 0 | - | 4.91 | 652,108 |
| Biggest Nations and Empires Ever | 0 | - | 4.56 | 132,705 |
| Famous Explorers | 0 | - | 4.70 | 32,475 |
| Answers by Time Period | 0 | - | 4.49 | 42,354 |
| The Diseases They Had | 0 | - | 4.13 | 13,060 |
| Territorial Accessions | 0 | - | 4.44 | 32,071 |
| Years in History #1 - Multiple Choice | 0 | - | 4.83 | 62,452 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.57 | 35,206 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.59 | 44,302 |
| Countries by Carbon Dioxide Emissions per Capita | 0 | - | 4.01 | 48,088 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 25,832 |
| Influential Women in History | 0 | - | 4.46 | 30,330 |
| Historical Events - AD or BC? | 0 | - | 4.75 | 51,756 |
| Materials From History #2 | 0 | - | 4.56 | 23,946 |
| 20th Century Dates Quiz | 0 | - | 4.52 | 37,823 |
| Events in History #2 | 0 | - | 4.47 | 66,509 |
| Events in History #4 | 0 | - | 4.43 | 40,738 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.17 | 46,360 |
| Assassinations in History Quiz | 0 | - | 4.15 | 62,940 |
| Famous Seconds Quiz | 0 | - | 4.21 | 44,508 |
| Ages and Eras Quiz | 0 | - | 4.34 | 64,300 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.21 | 38,280 |
| Titled People Quiz #1 | 0 | - | 4.13 | 43,794 |
| Titled People Quiz #3 | 0 | - | 4.32 | 41,242 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 73,396 |
| Historical Blunders | 0 | - | 4.32 | 85,984 |
| This Day in History - April | 0 | - | 4.42 | 43,227 |
| This Day in History - July | 0 | - | 4.48 | 34,956 |
| This Day in History - August | 0 | - | 4.41 | 41,643 |
| This Day in History - September | 0 | - | 4.54 | 54,634 |
| This Day in History - October | 0 | - | 4.49 | 36,195 |
| This Day in History - January | 0 | - | 4.53 | 44,221 |
| This Day in History - February | 0 | - | 4.41 | 38,280 |
| This Day in History - March | 0 | - | 4.44 | 41,783 |
| The 7 Wonders of the Ancient World | 0 | - | 4.79 | 65,511 |
| Ancient Civilizations | 0 | - | 4.55 | 34,453 |
| The Places They Went #1 | 0 | - | 4.76 | 32,302 |
| Famous Inventors | 0 | - | 4.44 | 42,353 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.14 | 935,543 |
| Former Flags | 0 | - | 4.98 | 80,738 |
| Name a Valid Year in History | 0 | - | 4.92 | 52,073 |
| History Analogies #1 | 0 | - | 4.46 | 75,773 |
| History Analogies #2 | 0 | - | 4.51 | 64,204 |
| Current Events by Year, 1990–2009 | 0 | - | 4.76 | 143,737 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 61,271 |
| Current Events by Year, 1930–1949 | 0 | - | 4.47 | 49,363 |
| History Analogies #3 | 0 | - | 4.54 | 66,380 |
| People Born on Islands | 0 | - | 4.43 | 39,897 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,498 |
| Which Came First? | 0 | - | 4.34 | 68,730 |
| Years in History by Picture | 0 | - | 4.43 | 29,727 |
| Christopher Columbus Quiz | 0 | - | 4.10 | 7,667 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,124 |
| Valid Answer - World History #1 | 0 | - | 4.59 | 42,353 |
| History True or False #3 | 0 | - | 4.53 | 36,343 |
| A to Z: Legendary Creatures | 0 | - | 4.30 | 47,982 |
| Events in History #3 | 0 | - | 4.35 | 67,339 |
| Events in History #1 | 0 | - | 4.31 | 148,897 |
| Events in Ancient History | 0 | - | 4.49 | 31,765 |
| Born Here on This Date #1 | 0 | - | 3.89 | 34,501 |
| People Who Died Young #1 | 0 | - | 4.23 | 61,664 |
| Titled People Quiz #2 | 0 | - | 4.34 | 25,424 |
| Deaths by Date and Cause #1 | 0 | - | 4.38 | 77,324 |
| Deaths by Date and Cause #2 | 0 | - | 4.03 | 50,057 |
| Job Titles Quiz #2 | 0 | - | 3.55 | 36,183 |
| Famous Ships Quiz | 0 | - | 4.21 | 28,136 |
| Short Historical Figures | 0 | - | 4.27 | 7,674 |
| Famous Alliances | 0 | - | 4.15 | 8,072 |
| Famous Firsts #1 | 0 | - | 4.42 | 65,594 |
| Time Magazine Person of the Year | 0 | - | 4.52 | 65,695 |
| Coups | 0 | - | 4.37 | 26,393 |
| Famous Documents | 0 | - | 4.05 | 20,973 |
| Invasions | 0 | - | 4.70 | 88,784 |
| Female Historical Figures | 0 | - | 4.29 | 31,236 |
| Legendary Deeds | 0 | - | 4.14 | 28,102 |
| Disasters in History | 0 | - | 4.39 | 23,874 |
| Executions in History | 0 | - | 4.26 | 16,240 |
| Famous Adulterers | 0 | - | 4.14 | 9,705 |
| People Known as "The Great" | 0 | - | 4.40 | 22,841 |
| This Day in History - May | 0 | - | 4.30 | 46,750 |
| This Day in History - June | 0 | - | 4.34 | 32,534 |
| This Day in History - November | 0 | - | 4.23 | 32,498 |
| This Day in History - December | 0 | - | 4.29 | 38,982 |
| The 19th Century | 0 | - | 4.47 | 52,596 |
| The 18th Century | 0 | - | 4.48 | 41,540 |
| The 16th Century | 0 | - | 4.71 | 48,895 |
| 19th Century A-Z | 0 | - | 4.82 | 34,055 |
| The 21st Century | 0 | - | 4.50 | 73,402 |
| Military History Vocabulary | 0 | - | 4.92 | 59,578 |
| History Multiple Choice #1 | 0 | - | 4.43 | 75,429 |
| History Multiple Choice #2 | 0 | - | 4.42 | 46,562 |
| History Multiple Choice #4 | 0 | - | 4.41 | 46,926 |
| History Multiple Choice #3 | 0 | - | 4.45 | 45,556 |
| 30 Historical People You Probably Don't Know | 0 | - | 4.39 | 55,361 |
| The 2nd Millennium BC | 0 | - | 4.52 | 11,504 |
| Current Events by Year, 1950–1969 | 0 | - | 4.37 | 44,243 |
| Current Events by Year, 1910–1929 | 0 | - | 4.28 | 45,316 |
| Groups of Things - History #1 | 0 | - | 4.37 | 85,895 |
| Groups of Things - History #2 | 0 | - | 4.39 | 74,311 |
| History Analogies #4 | 0 | - | 4.16 | 50,489 |
| History Groups of Two | 0 | - | 4.31 | 37,801 |
| 5-Letter History Chain #3 | 0 | - | 4.48 | 50,389 |
| 6-Letter History Chain #2 | 0 | - | 4.53 | 50,527 |
| 5-Letter History Chain #1 | 0 | - | 4.53 | 83,084 |
| Name a Valid Answer - World History #2 | 0 | - | 4.38 | 37,481 |
| Wolfcam's Random History General Knowledge | 0 | - | 4.43 | 19,494 |
| Empires A-Z | 0 | - | 4.47 | 39,405 |
| Random History by Country | 0 | - | 4.53 | 31,251 |
| World History Quiz for Dummies | 0 | - | 4.55 | 88,166 |
| G7 Leaders Since 2003 | 0 | - | 4.46 | 38,187 |
| People Depicted in Paintings | 0 | - | 4.55 | 40,870 |
| The 20th Century | 0 | - | 4.45 | 78,388 |
| Normandy D-Day Beaches | 0 | - | 4.82 | 36,327 |
| Territory Changes in World War I | 0 | - | 4.87 | 39,809 |
| Cold War Trivia #1 | 0 | - | 4.37 | 53,654 |
| Famous Battles Quiz | 0 | - | 4.24 | 46,517 |
| Name the War Quiz | 0 | - | 4.39 | 189,165 |
| People Who Were "The" Something | 0 | - | 4.22 | 128,444 |
| Famous U.S. Generals | 0 | - | 4.24 | 36,881 |
| Religions by Country of Origin Quiz | 0 | - | 4.28 | 72,291 |
| Quotes from Historical Figures #1 | 0 | - | 4.48 | 81,876 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.47 | 440,055 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.41 | 640,444 |
| Famous Families #1 | 0 | - | 4.25 | 79,146 |
| Names for Warriors | 0 | - | 4.39 | 34,441 |
| First Names of Historical Figures #2 | 0 | - | 4.37 | 34,690 |
| Famous Immigrants and Exiles | 0 | - | 4.51 | 19,638 |
| Famous Firsts #2 | 0 | - | 4.01 | 78,474 |
| First Names of Historical Figures #1 | 0 | - | 4.40 | 215,131 |
| 2017 Year in Review | 0 | - | 4.41 | 29,856 |
| The 9th and 10th Century | 0 | - | 4.47 | 28,006 |
| The 1st and 2nd Century | 0 | - | 4.54 | 21,708 |
| The 5th and 6th Century | 0 | - | 4.72 | 20,813 |
| History by Letter - A | 0 | - | 4.50 | 137,333 |
| History by Letter - B | 0 | - | 4.48 | 154,685 |
| History by Letter - C | 0 | - | 4.76 | 152,114 |
| History by Letter - E | 0 | - | 4.50 | 126,198 |
| History by Letter - G | 0 | - | 4.48 | 109,524 |
| History by Letter - H | 0 | - | 4.42 | 122,235 |
| History by Letter - J | 0 | - | 4.49 | 138,678 |
| History by Letter - N | 0 | - | 4.47 | 93,201 |
| History by Letter - S | 0 | - | 4.46 | 83,961 |
| History by Letter - W | 0 | - | 4.44 | 97,334 |
| History by Letter - M | 0 | - | 4.55 | 108,234 |
| History by Letter - K | 0 | - | 4.48 | 91,319 |
| History by Letter - L | 0 | - | 4.47 | 101,140 |
| History by Letter - I | 0 | - | 4.51 | 94,144 |
| History General Knowledge #1 | 0 | - | 4.50 | 98,243 |
| History General Knowledge #3 | 0 | - | 4.53 | 75,296 |
| History General Knowledge #6 | 0 | - | 4.43 | 69,714 |
| History General Knowledge #10 | 0 | - | 4.44 | 61,648 |
| History General Knowledge #11 | 0 | - | 4.42 | 52,458 |
| History by Picture - A | 0 | - | 4.22 | 40,119 |
| History by Picture - B | 0 | - | 4.35 | 42,790 |
| History by Picture - C | 0 | - | 4.34 | 47,849 |
| History by Picture - F | 0 | - | 4.32 | 32,888 |
| History by Picture - G | 0 | - | 4.39 | 37,087 |
| History by Picture - D | 0 | - | 4.31 | 38,750 |
| History by Picture - E | 0 | - | 4.26 | 38,638 |
| History by Picture - H | 0 | - | 4.37 | 32,044 |
| History by Picture - M | 0 | - | 4.22 | 31,956 |
| History by Picture - N | 0 | - | 4.38 | 36,164 |
| History by Picture - O | 0 | - | 4.36 | 31,825 |
| Years in History #2 - Multiple Choice | 0 | - | 4.38 | 38,232 |
| History True or False #1 | 0 | - | 4.47 | 66,171 |
| History Multiple Choice #5 | 0 | - | 4.49 | 29,750 |
| Dark Ages History | 0 | - | 4.43 | 31,524 |
| Name that Historical Figure #1 | 0 | - | 4.64 | 292,458 |
| Name that Historical Figure #2 | 0 | - | 4.43 | 246,165 |
| Musicians Who Died Young | 0 | - | 4.38 | 94,385 |
| The 7th, 8th, 9th and 10th Century BC | 0 | - | 4.53 | 10,132 |
| Rocks and Minerals Picture Quiz | 0 | - | 4.45 | 26,929 |
| Animals by Skeleton Image | 0 | - | 4.79 | 37,874 |
| Animals - Taxonomy to Common Name | 0 | - | 4.72 | 25,485 |
| Elements by Picture | 0 | - | 4.29 | 63,046 |
| Name the Constellations - With a Map | 0 | - | 4.90 | 30,987 |
| Countries with the Most HIV | 0 | - | 4.50 | 42,667 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 31,687 |
