| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,126 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,770 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,220 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,059 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,207 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,477 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,632 |
| Words for Leaders | 0 | - | 4.77 | 255,118 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,091 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,654 |
| UN Secretaries-General | 0 | - | 4.40 | 7,761 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,544 |
| NATO Countries | 0 | - | 4.98 | 275,702 |
| EU Countries Quiz | 0 | - | 4.99 | 269,892 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,618 |
| "Second Best" History Edition | 0 | - | 4.94 | 61,794 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,119 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,316 |
| Military History Vocabulary | 0 | - | 4.91 | 66,647 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,322 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,423 |
| World Leaders by Picture | 0 | - | 4.36 | 263,393 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,037 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,650 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,677 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.18 | 47,525 |
| OPEC Countries | 0 | - | 4.74 | 84,818 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,526 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,533 |
| Empires by Maps | 0 | - | 4.98 | 118,475 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,218 |
| WWII Geography | 0 | - | 4.81 | 119,339 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,521 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,088 |
| Name the English Monarchs | 0 | - | 4.92 | 497,856 |
| Dictators by Picture | 0 | - | 4.18 | 48,864 |
| Political Quotes | 0 | - | 4.17 | 19,802 |
| Influential Women in History | 0 | - | 4.42 | 34,988 |
| Metals of Antiquity | 0 | - | 4.94 | 92,902 |
| Cradles of Civilization | 0 | - | 4.46 | 39,051 |
| Materials From History #1 | 0 | - | 4.56 | 50,593 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,161 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,078 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,183 |
| History - Did They Have It? | 0 | - | 4.84 | 61,094 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,285 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,846 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,755 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,320 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,173 |
| Famous Explorers | 0 | - | 4.58 | 35,944 |
| Famous Empires by Description | 0 | - | 4.70 | 117,542 |
| Answers by Time Period | 0 | - | 4.63 | 55,263 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,651 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,744 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,442 |
| Popular Royal Names | 0 | - | 4.27 | 124,476 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,998 |
| First Names of Painters | 0 | - | 4.43 | 59,597 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.95 | 40,688 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 54,856 |
| All Modern-Day Countries Ever Controlled by the British | 0 | - | 4.81 | 49,362 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,905 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,266 |
| Countries with NO Military | 0 | - | 4.97 | 61,166 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,745 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,900 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,024 |
| Books of the Protestant Bible | 0 | - | 4.89 | 207,196 |
| Years in History by Picture | 0 | - | 4.44 | 35,102 |
| History of The Netherlands | 0 | - | 4.46 | 17,310 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,186 |
| Materials From History #2 | 0 | - | 4.59 | 30,912 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,574 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,149 |
| Countries of the Popes | 0 | - | 4.79 | 127,207 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,319 |
| Events in History #2 | 0 | - | 4.49 | 71,425 |
| Events in History #4 | 0 | - | 4.44 | 44,095 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,815 |
| Assassinations in History | 0 | - | 4.20 | 65,950 |
| Famous Seconds | 0 | - | 4.22 | 46,390 |
| Ages and Eras | 0 | - | 4.38 | 67,454 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,397 |
| Titled People Quiz #1 | 0 | - | 4.10 | 45,612 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,037 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,819 |
| Female Historical Figures | 0 | - | 4.31 | 33,096 |
| Historical Blunders | 0 | - | 4.33 | 91,676 |
| Territorial Accessions | 0 | - | 4.38 | 34,629 |
| People Known as "The Great" | 0 | - | 4.46 | 24,519 |
| This Day in History - July | 0 | - | 4.49 | 36,371 |
| This Day in History - August | 0 | - | 4.42 | 43,250 |
| This Day in History - September | 0 | - | 4.55 | 57,260 |
| This Day in History - October | 0 | - | 4.49 | 37,554 |
| This Day in History - January | 0 | - | 4.53 | 46,573 |
| This Day in History - March | 0 | - | 4.45 | 43,543 |
| Ancient Civilizations | 0 | - | 4.63 | 37,752 |
| The Places They Went #1 | 0 | - | 4.74 | 33,443 |
| Famous Inventors | 0 | - | 4.43 | 43,452 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,010,902 |
| 7 Deadly Sins | 0 | - | 4.88 | 394,861 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,494 |
| Former Flags | 0 | - | 4.97 | 106,676 |
| Historic Orient Express Routes Map | 0 | - | 5.00 | 52,951 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,593 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,635 |
| WWII Decoder | 0 | - | 4.41 | 53,036 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,747 |
| Cold War Decoder | 0 | - | 4.83 | 51,923 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,542 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,386 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,469 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,278 |
| European History for Dummies | 0 | - | 4.83 | 89,313 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,290 |
| U.S. States by Governor | 0 | - | 4.43 | 17,983 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,572 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,545 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 54,935 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,253 |
| Coldest World Capitals | 0 | - | 4.95 | 133,038 |
| World Currency Quiz | 0 | - | 4.92 | 298,424 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,844 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,074 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,735 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,123 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,679 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,443 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,914 |
| Buddhist Countries | 0 | - | 4.96 | 142,943 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,090,671 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,986 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,697 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,096 |
| History Analogies #1 | 0 | - | 4.53 | 89,777 |
| History Analogies #2 | 0 | - | 4.49 | 76,997 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 152,125 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 64,950 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 51,925 |
| History Analogies #3 | 0 | - | 4.61 | 80,429 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,142 |
| Which Came First? | 0 | - | 4.37 | 74,397 |
| Christopher Columbus Quiz | 0 | - | 4.21 | 8,257 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,983 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,520 |
| Random History by Country | 0 | - | 4.53 | 34,656 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,542 |
| Animals in World History | 0 | - | 4.74 | 44,215 |
| People - Real or Fictional? | 0 | - | 4.56 | 58,462 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,353 |
| History True or False #3 | 0 | - | 4.43 | 55,919 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,313 |
| A to Z: Legendary Creatures | 0 | - | 4.26 | 52,741 |
| WWII First Names | 0 | - | 4.44 | 41,559 |
| WWII for Dummies | 0 | - | 4.80 | 103,827 |
| Cold War Trivia #1 | 0 | - | 4.41 | 56,958 |
| Events in History #3 | 0 | - | 4.40 | 71,447 |
| Events in History #1 | 0 | - | 4.34 | 157,268 |
| Events in Ancient History | 0 | - | 4.50 | 35,708 |
| Born Here on This Date #1 | 0 | - | 3.92 | 35,284 |
| People Who Died Young #1 | 0 | - | 4.24 | 63,539 |
| Titled People Quiz #2 | 0 | - | 4.38 | 26,647 |
| Deaths by Date and Cause #1 | 0 | - | 4.37 | 94,888 |
| Deaths by Date and Cause #2 | 0 | - | 4.15 | 67,476 |
| Job Titles Quiz #2 | 0 | - | 3.62 | 37,238 |
| Famous Ships Quiz | 0 | - | 4.25 | 29,162 |
| Famous Short People | 0 | - | 4.29 | 13,001 |
| Name the Alliance | 0 | - | 4.29 | 29,150 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,544 |
| Coups | 0 | - | 4.40 | 27,581 |
| Famous Documents | 0 | - | 4.05 | 21,762 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,912 |
| Legendary Deeds | 0 | - | 4.16 | 28,855 |
| Disasters in History | 0 | - | 4.40 | 25,606 |
| Executions in History | 0 | - | 4.29 | 16,919 |
| This Day in History - April | 0 | - | 4.40 | 44,390 |
| This Day in History - May | 0 | - | 4.33 | 48,249 |
| This Day in History - June | 0 | - | 4.36 | 33,431 |
| This Day in History - November | 0 | - | 4.24 | 33,532 |
| This Day in History - December | 0 | - | 4.32 | 40,451 |
| This Day in History - February | 0 | - | 4.38 | 39,700 |
| The 19th Century | 0 | - | 4.53 | 67,878 |
| The 18th Century | 0 | - | 4.52 | 53,115 |
| The 16th Century | 0 | - | 4.77 | 58,734 |
| The 9th and 10th Century | 0 | - | 4.54 | 37,536 |
| The 21st Century | 0 | - | 4.48 | 105,281 |
| Battle to Country | 0 | - | 4.91 | 52,515 |
| The Life of King David | 0 | - | 4.37 | 14,059 |
| History Multiple Choice #1 | 0 | - | 4.46 | 81,510 |
| Years in History #2 - Multiple Choice | 0 | - | 4.43 | 41,405 |
| History Multiple Choice #2 | 0 | - | 4.43 | 49,800 |
| History Multiple Choice #3 | 0 | - | 4.45 | 48,539 |
| History Multiple Choice #5 | 0 | - | 4.49 | 32,263 |
| Three Real and One Fake - World History | 0 | - | 4.44 | 38,187 |
| British History A-Z #1 | 0 | - | 4.45 | 45,806 |
| Dark Ages History | 0 | - | 4.42 | 32,676 |
| 30 Historical People You Probably Don't Know | 0 | - | 4.36 | 60,808 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 335,490 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,161 |
