| World Leaders by Picture | 0 | - | 4.36 | 264,543 |
| Words for Leaders | 0 | - | 4.77 | 256,487 |
| Dictators by Picture | 0 | - | 4.18 | 49,044 |
| Largest City on Every Continent A-Z | 0 | - | 4.97 | 37,997 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,745 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,642 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,340 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,315 |
| Prime Ministers of the UK | 0 | - | 4.95 | 437,140 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,328 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,883 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,030 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,483 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,322 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,150 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,343 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,714 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,867 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,690 |
| British History A-Z #1 | 0 | - | 4.45 | 46,345 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,773 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.20 | 48,473 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,320 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,815 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,770 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,161 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,306 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,776 |
| UN Secretaries-General | 0 | - | 4.40 | 7,781 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,938 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,815 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,586 |
| Name the English Monarchs | 0 | - | 4.91 | 500,729 |
| German History A-Z | 0 | - | 4.49 | 24,543 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,737 |
| Spanish History A-Z | 0 | - | 4.37 | 19,241 |
| Italian History A-Z | 0 | - | 4.21 | 17,641 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,604 |
| European Cities A-Z by Clue #1 | 0 | - | 4.25 | 78,491 |
| Movie Quotes A-Z #1 | 0 | - | 4.31 | 40,895 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,228 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,738 |
| Political Quotes | 0 | - | 4.17 | 19,858 |
| French History A-Z | 0 | - | 4.22 | 24,479 |
| British Geography A-Z | 0 | - | 4.41 | 19,478 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,358 |
| Empires by Maps | 0 | - | 4.98 | 119,692 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,669 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,298 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,736 |
| Countries of the Popes | 0 | - | 4.79 | 127,715 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,527 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,282 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,875 |
| U.S. Cities A-Z by Clue #1 | 0 | - | 4.36 | 39,758 |
| Metals of Antiquity | 0 | - | 4.94 | 93,209 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,516 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,946 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,043 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,157 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,107 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,130 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,499 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,850 |
| First Names A - Z by Picture | 0 | - | 4.05 | 18,574 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 222,468 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,815 |
| Influential Women in History | 0 | - | 4.42 | 35,411 |
| Cradles of Civilization | 0 | - | 4.46 | 39,479 |
| Materials From History #1 | 0 | - | 4.56 | 51,406 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,461 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,636 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,398 |
| Mythology A-Z | 0 | - | 4.31 | 37,137 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,759 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,529 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,838 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,629 |
| Famous Explorers | 0 | - | 4.58 | 36,094 |
| Famous Empires by Description | 0 | - | 4.73 | 118,252 |
| Answers by Time Period | 0 | - | 4.64 | 55,465 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,191 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,902 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,165 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,710 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,523 |
| NATO Countries | 0 | - | 4.98 | 278,648 |
| EU Countries Quiz | 0 | - | 4.99 | 272,211 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,883 |
| U.S. States by Governor | 0 | - | 4.43 | 18,026 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,636 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,623 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,172 |
| NFL Football Team Logos | 0 | - | 4.91 | 625,188 |
| Australia A-Z | 0 | - | 4.54 | 49,908 |
| Former Flags | 0 | - | 4.97 | 107,316 |
| Years in History by Picture | 0 | - | 4.44 | 35,387 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,516 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,096 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,465 |
| Materials From History #2 | 0 | - | 4.59 | 31,433 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,815 |
| Pope Facts | 0 | - | 4.39 | 31,157 |
| WWII First Names | 0 | - | 4.44 | 41,707 |
| Cold War Decoder | 0 | - | 4.83 | 52,185 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,370 |
| Events in History #2 | 0 | - | 4.49 | 71,598 |
| Events in History #4 | 0 | - | 4.44 | 44,233 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,890 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,930 |
| Assassinations in History | 0 | - | 4.21 | 66,120 |
| Famous Seconds | 0 | - | 4.22 | 46,524 |
| Ages and Eras | 0 | - | 4.39 | 67,611 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,462 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,743 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,123 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,935 |
| Female Historical Figures | 0 | - | 4.27 | 33,208 |
| Historical Blunders | 0 | - | 4.34 | 91,851 |
| Territorial Accessions | 0 | - | 4.39 | 34,736 |
| People Known as "The Great" | 0 | - | 4.46 | 24,612 |
| This Day in History - July | 0 | - | 4.49 | 36,427 |
| This Day in History - August | 0 | - | 4.42 | 43,324 |
| This Day in History - September | 0 | - | 4.55 | 57,375 |
| This Day in History - October | 0 | - | 4.49 | 37,594 |
| This Day in History - January | 0 | - | 4.50 | 46,655 |
| This Day in History - March | 0 | - | 4.45 | 43,609 |
| Ancient Civilizations | 0 | - | 4.64 | 37,874 |
| Military History Vocabulary | 0 | - | 4.91 | 66,942 |
| Battle to Country | 0 | - | 4.91 | 53,023 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,859 |
| The Places They Went #1 | 0 | - | 4.74 | 33,495 |
| The Life of King David | 0 | - | 4.37 | 14,106 |
| Famous Inventors | 0 | - | 4.43 | 43,505 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,738 |
| European History for Dummies | 0 | - | 4.83 | 89,663 |
| English Royal Consorts | 0 | - | 4.37 | 37,292 |
| Kings of France Quiz | 0 | - | 4.20 | 32,649 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,012,666 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,991 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,299 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,680 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 905,917 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,975 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,348 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,037 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 163,678 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,605 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,571 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 137,738 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 35,776 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 104,065 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 111,134 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 121,798 |
| Every Country Shape | 0 | - | 5.00 | 462,690 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 107,765 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 80,371 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 57,911 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 85,429 |
| Cartoon Versions of Countries | 0 | - | 4.99 | 94,981 |
| Country Shapes Under the Sea | 0 | - | 5.00 | 77,485 |
| A Square of Merged Countries #1 | 0 | - | 4.88 | 59,290 |
| Country Shapes Slideshow | 0 | - | 4.84 | 39,368 |
| Country Shapes in my Burger | 0 | - | 4.95 | 54,476 |
| A Square of Merged Countries #2 | 0 | - | 4.97 | 41,307 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,904 |
| Flags to Capitals #1 | 0 | - | 4.96 | 58,228 |
| Flags to Capitals #2 | 0 | - | 4.95 | 44,214 |
| NHL Ice Hockey Team Logos | 0 | - | 4.89 | 186,103 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,714 |
| Monarchies of Europe | 0 | - | 4.90 | 97,798 |
| Monarchies of Asia | 0 | - | 4.97 | 70,895 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,962 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,510 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,272 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,680 |
| Countries Mentioned in the Bible | 0 | - | 4.96 | 66,648 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,836 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,705 |
| Orthodox Countries | 0 | - | 4.92 | 131,085 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,444 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,742 |
| U.S. Baby Boy Names by Letter | 0 | - | 3.86 | 96,735 |
| U.S. Baby Girls Names by Letter | 0 | - | 3.71 | 75,366 |
| TV Characters A-Z | 0 | - | 4.12 | 31,983 |
| India A-Z | 0 | - | 4.42 | 34,055 |
| Italy A-Z | 0 | - | 4.49 | 58,077 |
| China A-Z | 0 | - | 4.55 | 67,033 |
| Germany A-Z | 0 | - | 4.56 | 62,500 |
| Scotland A-Z | 0 | - | 4.73 | 41,179 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 336,470 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,711 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,785 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,227 |
| History Analogies #1 | 0 | - | 4.53 | 89,886 |
| History Analogies #2 | 0 | - | 4.49 | 77,129 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 152,410 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 65,089 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 52,024 |
| Groups of Things - History #1 | 0 | - | 4.41 | 93,921 |
