| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,112 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,722 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,214 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,047 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,197 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,463 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,625 |
| Words for Leaders | 0 | - | 4.77 | 255,064 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,077 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,395 |
| World Leaders by Picture | 0 | - | 4.36 | 263,314 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,021 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,644 |
| UN Secretaries-General | 0 | - | 4.40 | 7,759 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,541 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,457 |
| NATO Countries | 0 | - | 4.98 | 275,526 |
| EU Countries Quiz | 0 | - | 4.99 | 269,744 |
| Dictators by Picture | 0 | - | 4.18 | 48,849 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,290 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,114 |
| Military History Vocabulary | 0 | - | 4.91 | 66,622 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,281 |
| "Second Best" History Edition | 0 | - | 4.94 | 61,715 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,283 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,649 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,839 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.18 | 47,350 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,750 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,506 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,664 |
| Name the English Monarchs | 0 | - | 4.92 | 497,729 |
| OPEC Countries | 0 | - | 4.74 | 84,806 |
| WWII Geography | 0 | - | 4.81 | 119,311 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,488 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,477 |
| Empires by Maps | 0 | - | 4.98 | 118,356 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,194 |
| Political Quotes | 0 | - | 4.17 | 19,800 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,072 |
| Metals of Antiquity | 0 | - | 4.94 | 92,876 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,125 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,139 |
| History - Did They Have It? | 0 | - | 4.84 | 61,070 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,586 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,626 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,639 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,735 |
| Influential Women in History | 0 | - | 4.42 | 34,928 |
| Cradles of Civilization | 0 | - | 4.46 | 38,992 |
| Popular Royal Names | 0 | - | 4.27 | 124,458 |
| Materials From History #1 | 0 | - | 4.56 | 50,550 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,030 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,996 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,255 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,092 |
| Countries of the Popes | 0 | - | 4.79 | 127,163 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,202 |
| First Names of Painters | 0 | - | 4.43 | 59,591 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,122 |
| Famous Explorers | 0 | - | 4.58 | 35,928 |
| Famous Empires by Description | 0 | - | 4.70 | 117,504 |
| Answers by Time Period | 0 | - | 4.63 | 55,253 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,428 |
| History of The Netherlands | 0 | - | 4.46 | 17,305 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,572 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,525 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,930 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.95 | 40,677 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 54,839 |
| All Modern-Day Countries Ever Controlled by the British | 0 | - | 4.81 | 49,346 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,732 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,784 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,079 |
| Countries with NO Military | 0 | - | 4.97 | 61,136 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,692 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,885 |
| Top Five Countries by Religion | 0 | - | 4.93 | 168,969 |
| 7 Deadly Sins | 0 | - | 4.88 | 394,688 |
| Books of the Protestant Bible | 0 | - | 4.89 | 207,083 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,344 |
| Former Flags | 0 | - | 4.97 | 106,632 |
| Years in History by Picture | 0 | - | 4.44 | 35,083 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,168 |
| Materials From History #2 | 0 | - | 4.59 | 30,903 |
| Historic Orient Express Routes Map | 0 | - | 5.00 | 52,933 |
| WWII Decoder | 0 | - | 4.41 | 53,024 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,727 |
| Cold War Decoder | 0 | - | 4.83 | 51,906 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,310 |
| Events in History #2 | 0 | - | 4.49 | 71,406 |
| Events in History #4 | 0 | - | 4.44 | 44,085 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,357 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,798 |
| Assassinations in History | 0 | - | 4.20 | 65,937 |
| Famous Seconds | 0 | - | 4.22 | 46,380 |
| Ages and Eras Quiz | 0 | - | 4.38 | 67,436 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,382 |
| Titled People Quiz #1 | 0 | - | 4.10 | 45,600 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,023 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,813 |
| Female Historical Figures | 0 | - | 4.31 | 33,084 |
| Historical Blunders | 0 | - | 4.33 | 91,658 |
| Territorial Accessions | 0 | - | 4.38 | 34,621 |
| People Known as "The Great" | 0 | - | 4.46 | 24,507 |
| This Day in History - July | 0 | - | 4.49 | 36,367 |
| This Day in History - August | 0 | - | 4.42 | 43,242 |
| This Day in History - September | 0 | - | 4.55 | 57,249 |
| This Day in History - October | 0 | - | 4.49 | 37,550 |
| This Day in History - January | 0 | - | 4.53 | 46,566 |
| This Day in History - March | 0 | - | 4.45 | 43,538 |
| Ancient Civilizations | 0 | - | 4.63 | 37,737 |
| The Places They Went #1 | 0 | - | 4.74 | 33,442 |
| Famous Inventors | 0 | - | 4.43 | 43,447 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,448 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,266 |
| European History for Dummies | 0 | - | 4.82 | 89,292 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,289 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,010,771 |
| U.S. States by Governor | 0 | - | 4.43 | 17,979 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,570 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,545 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 54,923 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,221 |
| Coldest World Capitals | 0 | - | 4.95 | 133,027 |
| World Currency Quiz | 0 | - | 4.92 | 298,224 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,744 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,014 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,700 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,088 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,635 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,390 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,880 |
| Buddhist Countries | 0 | - | 4.96 | 142,906 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,090,390 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,872 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,688 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,080 |
| History Analogies #1 | 0 | - | 4.53 | 89,768 |
| History Analogies #2 | 0 | - | 4.49 | 76,987 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 152,107 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 64,941 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 51,920 |
| History Analogies #3 | 0 | - | 4.61 | 80,420 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,124 |
| Which Came First? | 0 | - | 4.37 | 74,386 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,981 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,509 |
| Random History by Country | 0 | - | 4.53 | 34,650 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,529 |
| Animals in World History | 0 | - | 4.74 | 44,205 |
| People - Real or Fictional? | 0 | - | 4.56 | 58,444 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,344 |
| History True or False #3 | 0 | - | 4.43 | 55,900 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,305 |
| A to Z: Legendary Creatures | 0 | - | 4.26 | 52,728 |
| WWII First Names | 0 | - | 4.44 | 41,553 |
| WWII for Dummies | 0 | - | 4.80 | 103,784 |
| Cold War Trivia #1 | 0 | - | 4.41 | 56,930 |
| Events in History #3 | 0 | - | 4.40 | 71,432 |
| Events in History #1 | 0 | - | 4.34 | 157,249 |
| Events in Ancient History | 0 | - | 4.50 | 35,692 |
| People Who Died Young #1 | 0 | - | 4.24 | 63,532 |
| Deaths by Date and Cause #1 | 0 | - | 4.37 | 94,877 |
| Deaths by Date and Cause #2 | 0 | - | 4.15 | 67,463 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,525 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,895 |
| This Day in History - April | 0 | - | 4.40 | 44,385 |
| This Day in History - May | 0 | - | 4.33 | 48,242 |
| This Day in History - June | 0 | - | 4.36 | 33,429 |
| This Day in History - November | 0 | - | 4.24 | 33,529 |
| This Day in History - December | 0 | - | 4.32 | 40,447 |
| This Day in History - February | 0 | - | 4.38 | 39,696 |
| The 19th Century | 0 | - | 4.53 | 67,869 |
| The 18th Century | 0 | - | 4.52 | 53,110 |
| The 16th Century | 0 | - | 4.77 | 58,730 |
| The 9th and 10th Century | 0 | - | 4.54 | 37,533 |
| The 21st Century | 0 | - | 4.48 | 105,264 |
| Battle to Country | 0 | - | 4.91 | 52,488 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,663 |
| The Life of King David | 0 | - | 4.37 | 14,056 |
| History Multiple Choice #1 | 0 | - | 4.46 | 81,498 |
| Years in History #2 - Multiple Choice | 0 | - | 4.43 | 41,399 |
| History Multiple Choice #2 | 0 | - | 4.43 | 49,788 |
| History Multiple Choice #3 | 0 | - | 4.45 | 48,529 |
| History Multiple Choice #5 | 0 | - | 4.49 | 32,256 |
| Three Real and One Fake - World History | 0 | - | 4.44 | 38,180 |
| English Royal Consorts | 0 | - | 4.37 | 37,154 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,600 |
| British History A-Z #1 | 0 | - | 4.45 | 45,793 |
| Kings of France Quiz | 0 | - | 4.20 | 32,548 |
| Dark Ages History | 0 | - | 4.42 | 32,671 |
| 30 Historical People You Probably Don't Know | 0 | - | 4.36 | 60,797 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 335,418 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,151 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,533 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,273 |
| Monarchies of Europe | 0 | - | 4.90 | 97,280 |
| Monarchies of Asia | 0 | - | 4.97 | 70,579 |
| Capital Cities with the Least Precipitation | 0 | - | 4.89 | 29,022 |
