| G7 Leaders Since 2003 | 0 | - | 4.46 | 38,797 |
| Famous Dictators Quiz #1 | 0 | - | 4.75 | 184,328 |
| Historical Leaders by Date #1 | 0 | - | 4.50 | 28,400 |
| Historical Leaders by Date #2 | 0 | - | 4.54 | 27,339 |
| Historical Rulers #2 | 0 | - | 4.26 | 43,390 |
| Historical Rulers #1 | 0 | - | 4.32 | 111,824 |
| UN Secretaries-General | 0 | - | 4.42 | 7,162 |
| Words for Leaders | 0 | - | 4.80 | 218,727 |
| Famous Dictators Quiz #2 | 0 | - | 4.34 | 80,179 |
| World Leaders Quiz #2 | 0 | - | 4.01 | 25,140 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 18,431 |
| NATO Countries Quiz | 0 | - | 4.98 | 227,740 |
| EU Countries Quiz | 0 | - | 4.99 | 229,964 |
| Prime Ministers of the UK | 0 | - | 4.95 | 384,532 |
| "Second Best" History Edition | 0 | - | 4.94 | 47,506 |
| World Leaders of the Cold War | 0 | - | 4.34 | 22,599 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.76 | 58,800 |
| Famous Empires in History | 0 | - | 4.83 | 105,045 |
| Military History Vocabulary | 0 | - | 4.92 | 60,632 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 223,222 |
| Political Figures by Last Name #1 | 0 | - | 4.57 | 60,820 |
| World Leaders by Picture | 0 | - | 4.38 | 241,083 |
| Canadian Prime Ministers Quiz | 0 | - | 4.64 | 50,196 |
| World Leaders of the World Wars | 0 | - | 4.40 | 34,601 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.19 | 40,901 |
| Countries of the Popes | 0 | - | 4.82 | 111,946 |
| OPEC Countries Quiz | 0 | - | 4.72 | 81,087 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 67,925 |
| Former Countries by Territory Map | 0 | - | 4.97 | 86,777 |
| Empires by Maps | 0 | - | 4.98 | 96,064 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 46,848 |
| WWII Geography | 0 | - | 4.81 | 100,339 |
| WWII Figures by Picture | 0 | - | 4.88 | 41,232 |
| English Monarchs Quiz | 0 | - | 4.91 | 451,010 |
| Dictators by Picture | 0 | - | 4.24 | 44,801 |
| Prime Ministers of Australia | 0 | - | 4.48 | 28,212 |
| Political Quotes Quiz | 0 | - | 4.09 | 19,027 |
| Metals of Antiquity | 0 | - | 4.93 | 85,865 |
| Cradles of Civilization | 0 | - | 4.41 | 32,758 |
| Materials From History #1 | 0 | - | 4.54 | 45,293 |
| Animals in World History | 0 | - | 4.82 | 40,558 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 40,232 |
| Historical Countries by Ruler | 0 | - | 4.45 | 39,913 |
| History: What Came First? #1 | 0 | - | 4.84 | 92,031 |
| Political Figures by Last Name #2 | 0 | - | 4.05 | 14,851 |
| Spouses of World Leaders | 0 | - | 4.16 | 11,643 |
| First Names of Recent World Leaders | 0 | - | 4.29 | 22,990 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.47 | 14,009 |
| Mythical Creatures Quiz #1 | 0 | - | 4.91 | 659,714 |
| Biggest Nations and Empires Ever | 0 | - | 4.55 | 134,596 |
| Famous Explorers | 0 | - | 4.65 | 32,858 |
| Answers by Time Period | 0 | - | 4.49 | 42,883 |
| Territorial Accessions | 0 | - | 4.43 | 32,359 |
| Years in History #1 - Multiple Choice | 0 | - | 4.84 | 63,480 |
| European Secessionist Movements on a Map | 0 | - | 4.51 | 31,682 |
| Popular Royal Names | 0 | - | 4.27 | 117,074 |
| Paramount Leaders of China | 0 | - | 4.31 | 10,007 |
| Top 10 Oldest African Countries | 0 | - | 4.84 | 23,286 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 227,782 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 229,296 |
| Countries with NO Military | 0 | - | 4.97 | 50,322 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 126,692 |
| Countries by Number of Books Published | 0 | - | 4.95 | 64,289 |
| Top Five Countries by Religion | 0 | - | 4.90 | 144,330 |
| Books of the Protestant Bible Quiz | 0 | - | 4.87 | 181,271 |
| Influential Women in History | 0 | - | 4.47 | 30,578 |
| History of The Netherlands | 0 | - | 4.43 | 15,870 |
| Historical Events - AD or BC? | 0 | - | 4.75 | 52,546 |
| Materials From History #2 | 0 | - | 4.58 | 24,967 |
| The Dictator Files: Chairman Mao | 0 | - | 4.32 | 18,641 |
| Name the Popes Quiz | 0 | - | 4.46 | 123,083 |
| 20th Century Dates Quiz | 0 | - | 4.53 | 38,024 |
| Events in History #2 | 0 | - | 4.47 | 67,262 |
| Events in History #4 | 0 | - | 4.44 | 41,257 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.18 | 46,697 |
| Assassinations in History Quiz | 0 | - | 4.17 | 63,266 |
| Famous Seconds Quiz | 0 | - | 4.21 | 44,650 |
| Ages and Eras Quiz | 0 | - | 4.35 | 64,676 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.22 | 38,380 |
| Titled People Quiz #1 | 0 | - | 4.14 | 43,954 |
| Titled People Quiz #3 | 0 | - | 4.33 | 41,407 |
| Job Titles Quiz #1 | 0 | - | 4.23 | 73,676 |
| Historical Blunders | 0 | - | 4.32 | 87,005 |
| This Day in History - April | 0 | - | 4.42 | 43,408 |
| This Day in History - July | 0 | - | 4.48 | 35,191 |
| This Day in History - August | 0 | - | 4.41 | 41,905 |
| This Day in History - September | 0 | - | 4.55 | 55,087 |
| This Day in History - October | 0 | - | 4.49 | 36,378 |
| This Day in History - January | 0 | - | 4.53 | 44,632 |
| This Day in History - February | 0 | - | 4.41 | 38,494 |
| This Day in History - March | 0 | - | 4.44 | 42,082 |
| The 7 Wonders of the Ancient World | 0 | - | 4.79 | 65,732 |
| Ancient Civilizations | 0 | - | 4.56 | 34,808 |
| The Places They Went #1 | 0 | - | 4.77 | 32,475 |
| The Life of King David | 0 | - | 4.43 | 13,468 |
| Famous Inventors | 0 | - | 4.44 | 42,509 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.14 | 949,428 |
| All Disney Animated Movies | 0 | - | 4.83 | 393,728 |
| 7 Deadly Sins Quiz | 0 | - | 4.86 | 347,878 |
| Former Flags | 0 | - | 4.98 | 82,279 |
| Prime Ministers of Israel | 0 | - | 4.10 | 16,265 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.42 | 24,178 |
| Pope Facts | 0 | - | 4.41 | 28,147 |
| First Names of Painters | 0 | - | 4.38 | 56,556 |
| WWII Decoder | 0 | - | 4.44 | 49,187 |
| Name a Valid Answer - World War II | 0 | - | 4.51 | 48,539 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 87,962 |
| Name a Valid Year in History | 0 | - | 4.92 | 54,286 |
| Houses of British Monarchs | 0 | - | 4.50 | 52,531 |
| U.S. States by Governor Quiz | 0 | - | 4.42 | 17,011 |
| U.S. Political Parties in History | 0 | - | 4.43 | 26,264 |
| U.S. Government Agencies | 0 | - | 4.41 | 17,796 |
| Red State or Blue State Trait? | 0 | - | 4.44 | 48,927 |
| Countries with the Most Tanks | 0 | - | 4.89 | 76,225 |
| Coldest World Capitals | 0 | - | 4.96 | 128,413 |
| World Currency Quiz | 0 | - | 4.92 | 249,363 |
| Countries with the Most Millionaires | 0 | - | 4.85 | 85,087 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 42,054 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 66,920 |
| Cities with the Biggest Economies | 0 | - | 4.92 | 119,217 |
| Countries with the Most Christians | 0 | - | 4.93 | 122,980 |
| Least Christian Countries with Exceptions | 0 | - | 4.89 | 73,817 |
| Majority Muslim Countries | 0 | - | 4.97 | 315,378 |
| Buddhist Countries | 0 | - | 4.96 | 131,614 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,013,156 |
| Body Parts in History and Culture | 0 | - | 4.48 | 32,979 |
| History Analogies #1 | 0 | - | 4.47 | 76,240 |
| History Analogies #2 | 0 | - | 4.51 | 64,745 |
| Current Events by Year, 1990–2009 | 0 | - | 4.75 | 145,114 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 61,868 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 49,747 |
| History Analogies #3 | 0 | - | 4.54 | 66,895 |
| People Born on Islands | 0 | - | 4.43 | 40,313 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.72 | 54,203 |
| Which Came First? | 0 | - | 4.35 | 69,612 |
| Years in History by Picture | 0 | - | 4.43 | 30,353 |
| Valid Answer - World History #2 | 0 | - | 4.41 | 39,661 |
| Christopher Columbus Quiz | 0 | - | 4.12 | 7,706 |
| Ancient Greece A-Z | 0 | - | 4.63 | 20,927 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,852 |
| Random History by Country | 0 | - | 4.53 | 31,664 |
| Valid Answer - World History #1 | 0 | - | 4.57 | 56,623 |
| Places - Real or Fictional? | 0 | - | 4.56 | 46,032 |
| History True or False #3 | 0 | - | 4.55 | 37,348 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.64 | 21,066 |
| A to Z: Legendary Creatures | 0 | - | 4.31 | 48,591 |
| WWII First Names | 0 | - | 4.46 | 38,867 |
| WWII for Dummies | 0 | - | 4.76 | 92,765 |
| Events in History #3 | 0 | - | 4.35 | 67,974 |
| Events in History #1 | 0 | - | 4.32 | 150,238 |
| Events in Ancient History | 0 | - | 4.49 | 32,306 |
| Born Here on This Date #1 | 0 | - | 3.90 | 34,541 |
| People Who Died Young #1 | 0 | - | 4.24 | 61,861 |
| Titled People Quiz #2 | 0 | - | 4.35 | 25,543 |
| Deaths by Date and Cause #1 | 0 | - | 4.39 | 78,008 |
| Deaths by Date and Cause #2 | 0 | - | 4.04 | 50,311 |
| Job Titles Quiz #2 | 0 | - | 3.57 | 36,257 |
| Famous Ships Quiz | 0 | - | 4.22 | 28,238 |
| Short Historical Figures | 0 | - | 4.31 | 7,730 |
| Famous Alliances | 0 | - | 4.17 | 8,142 |
| Famous Firsts #1 | 0 | - | 4.42 | 65,959 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 66,746 |
| Coups | 0 | - | 4.38 | 26,524 |
| Famous Documents | 0 | - | 4.07 | 21,060 |
| Invasions | 0 | - | 4.71 | 90,045 |
| Female Historical Figures | 0 | - | 4.30 | 31,407 |
| Legendary Deeds | 0 | - | 4.14 | 28,195 |
| Disasters in History | 0 | - | 4.40 | 24,027 |
| Executions in History | 0 | - | 4.27 | 16,325 |
| Famous Adulterers | 0 | - | 4.14 | 9,762 |
| People Known as "The Great" | 0 | - | 4.40 | 23,003 |
| First Names of Historical Figures #1 | 0 | - | 4.41 | 217,522 |
| This Day in History - May | 0 | - | 4.30 | 47,022 |
| This Day in History - June | 0 | - | 4.34 | 32,680 |
| This Day in History - November | 0 | - | 4.23 | 32,639 |
| This Day in History - December | 0 | - | 4.30 | 39,221 |
| The 19th Century | 0 | - | 4.50 | 62,495 |
| The 18th Century | 0 | - | 4.49 | 43,147 |
| The 16th Century | 0 | - | 4.71 | 50,009 |
| 19th Century A-Z | 0 | - | 4.82 | 34,576 |
| The 21st Century | 0 | - | 4.50 | 94,627 |
| Battle to Country | 0 | - | 4.92 | 36,249 |
| History by Picture - N | 0 | - | 4.41 | 36,813 |
| History Multiple Choice #1 | 0 | - | 4.44 | 76,408 |
| History Multiple Choice #2 | 0 | - | 4.43 | 47,087 |
| History Multiple Choice #3 | 0 | - | 4.45 | 46,017 |
| British History A-Z | 0 | - | 4.47 | 39,841 |
| Dark Ages History | 0 | - | 4.43 | 31,676 |
| 30 Historical People You Probably Don't Know | 0 | - | 4.40 | 56,241 |
| The 2nd Millennium BC | 0 | - | 4.52 | 12,112 |
| The U.S. Government - How Does it Work? | 0 | - | 4.32 | 40,041 |
| World Capitals in the Answer | 0 | - | 4.94 | 67,986 |
| Most Powerful Countries Bordering Each Other | 0 | - | 4.85 | 50,015 |
| Monarchies of Europe | 0 | - | 4.88 | 87,661 |
| Monarchies of Asia | 0 | - | 4.95 | 54,479 |
| Capital Cities with the Least Precipitation | 0 | - | 4.90 | 27,532 |
| Countries with the Most Billionaires | 0 | - | 4.94 | 283,434 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 178,358 |
| Countries with the Most Exports | 0 | - | 4.96 | 138,870 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 163,803 |
