| Famous Dictators Quiz #1 | 0 | - | 4.75 | 184,265 |
| G7 Leaders Since 2003 | 0 | - | 4.46 | 38,782 |
| Famous Dictators Quiz #2 | 0 | - | 4.34 | 80,159 |
| Historical Leaders by Date #1 | 0 | - | 4.50 | 28,388 |
| Historical Leaders by Date #2 | 0 | - | 4.54 | 27,332 |
| Historical Rulers #2 | 0 | - | 4.26 | 43,373 |
| Historical Rulers #1 | 0 | - | 4.32 | 111,804 |
| World Leaders Quiz #1 | 0 | - | 4.12 | 102,445 |
| UN Secretaries-General | 0 | - | 4.42 | 7,161 |
| Words for Leaders | 0 | - | 4.80 | 218,625 |
| World Leaders Quiz #2 | 0 | - | 4.01 | 25,130 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 18,426 |
| Prime Ministers of the UK | 0 | - | 4.95 | 384,365 |
| NATO Countries Quiz | 0 | - | 4.98 | 227,527 |
| EU Countries Quiz | 0 | - | 4.99 | 229,760 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.76 | 58,784 |
| Political Figures by Last Name #1 | 0 | - | 4.57 | 60,788 |
| World Leaders of the Cold War | 0 | - | 4.34 | 22,588 |
| Military History Vocabulary | 0 | - | 4.92 | 60,609 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 223,178 |
| "Second Best" History Edition | 0 | - | 4.94 | 47,464 |
| World Leaders of the World Wars | 0 | - | 4.40 | 34,593 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.19 | 40,890 |
| Countries of the Popes | 0 | - | 4.85 | 111,821 |
| Famous Empires in History | 0 | - | 4.83 | 104,999 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 67,913 |
| World Leaders by Picture | 0 | - | 4.38 | 240,984 |
| Canadian Prime Ministers Quiz | 0 | - | 4.64 | 50,170 |
| English Monarchs Quiz | 0 | - | 4.91 | 450,736 |
| OPEC Countries Quiz | 0 | - | 4.72 | 81,080 |
| Dictators by Picture | 0 | - | 4.24 | 44,783 |
| WWII Geography | 0 | - | 4.81 | 100,299 |
| WWII Figures by Picture | 0 | - | 4.88 | 41,193 |
| Former Countries by Territory Map | 0 | - | 4.97 | 86,732 |
| Empires by Maps | 0 | - | 4.98 | 95,993 |
| Prime Ministers of Australia | 0 | - | 4.48 | 28,196 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 46,832 |
| Political Quotes Quiz | 0 | - | 4.09 | 19,026 |
| Metals of Antiquity | 0 | - | 4.93 | 85,840 |
| Animals in World History | 0 | - | 4.82 | 40,533 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 40,215 |
| History: What Came First? #1 | 0 | - | 4.84 | 91,976 |
| Political Figures by Last Name #2 | 0 | - | 4.05 | 14,843 |
| Spouses of World Leaders | 0 | - | 4.16 | 11,638 |
| First Names of Recent World Leaders | 0 | - | 4.28 | 22,978 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.47 | 14,006 |
| Years in History #1 - Multiple Choice | 0 | - | 4.84 | 63,449 |
| European Secessionist Movements on a Map | 0 | - | 4.51 | 31,676 |
| Cradles of Civilization | 0 | - | 4.41 | 32,735 |
| Popular Royal Names | 0 | - | 4.27 | 117,039 |
| Materials From History #1 | 0 | - | 4.54 | 45,278 |
| Paramount Leaders of China | 0 | - | 4.31 | 10,001 |
| Name the Popes Quiz | 0 | - | 4.46 | 122,983 |
| Mythical Creatures Quiz #1 | 0 | - | 4.91 | 659,541 |
| Biggest Nations and Empires Ever | 0 | - | 4.55 | 134,560 |
| Famous Explorers | 0 | - | 4.65 | 32,850 |
| Answers by Time Period | 0 | - | 4.49 | 42,879 |
| Territorial Accessions | 0 | - | 4.43 | 32,347 |
| History of The Netherlands | 0 | - | 4.43 | 15,864 |
| The Dictator Files: Chairman Mao | 0 | - | 4.32 | 18,638 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 87,936 |
| The Life of King David | 0 | - | 4.43 | 13,466 |
| Top 10 Oldest African Countries | 0 | - | 4.84 | 23,265 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 227,639 |
| Countries with Nuclear Weapons | 0 | - | 4.88 | 220,733 |
| Countries with NO Military | 0 | - | 4.97 | 50,157 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 126,567 |
| All Disney Animated Movies | 0 | - | 4.83 | 393,317 |
| Countries by Number of Books Published | 0 | - | 4.95 | 64,245 |
| Top Five Countries by Religion | 0 | - | 4.90 | 144,111 |
| 7 Deadly Sins Quiz | 0 | - | 4.86 | 347,802 |
| Books of the Protestant Bible Quiz | 0 | - | 4.87 | 181,213 |
| Influential Women in History | 0 | - | 4.47 | 30,571 |
| Former Flags | 0 | - | 4.98 | 82,248 |
| Historical Events - AD or BC? | 0 | - | 4.75 | 52,526 |
| Materials From History #2 | 0 | - | 4.58 | 24,966 |
| Prime Ministers of Israel | 0 | - | 4.10 | 16,256 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.42 | 24,171 |
| Pope Facts | 0 | - | 4.41 | 28,119 |
| First Names of Painters | 0 | - | 4.38 | 56,547 |
| WWII Decoder | 0 | - | 4.44 | 49,166 |
| Name a Valid Answer - World War II | 0 | - | 4.51 | 48,506 |
| 20th Century Dates Quiz | 0 | - | 4.53 | 38,018 |
| Events in History #2 | 0 | - | 4.47 | 67,242 |
| Events in History #4 | 0 | - | 4.44 | 41,242 |
| Name a Valid Year in History | 0 | - | 4.92 | 54,237 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.18 | 46,689 |
| Assassinations in History Quiz | 0 | - | 4.17 | 63,256 |
| Famous Seconds Quiz | 0 | - | 4.21 | 44,646 |
| Ages and Eras Quiz | 0 | - | 4.35 | 64,669 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.22 | 38,375 |
| Titled People Quiz #1 | 0 | - | 4.14 | 43,950 |
| Titled People Quiz #3 | 0 | - | 4.33 | 41,403 |
| Job Titles Quiz #1 | 0 | - | 4.23 | 73,670 |
| Historical Blunders | 0 | - | 4.32 | 86,996 |
| This Day in History - April | 0 | - | 4.42 | 43,402 |
| This Day in History - July | 0 | - | 4.48 | 35,179 |
| This Day in History - August | 0 | - | 4.41 | 41,895 |
| This Day in History - September | 0 | - | 4.55 | 55,071 |
| This Day in History - October | 0 | - | 4.49 | 36,374 |
| This Day in History - January | 0 | - | 4.53 | 44,623 |
| This Day in History - February | 0 | - | 4.41 | 38,488 |
| This Day in History - March | 0 | - | 4.44 | 42,068 |
| The 7 Wonders of the Ancient World | 0 | - | 4.79 | 65,720 |
| Ancient Civilizations | 0 | - | 4.56 | 34,794 |
| The Places They Went #1 | 0 | - | 4.77 | 32,472 |
| Famous Inventors | 0 | - | 4.44 | 42,504 |
| Houses of British Monarchs | 0 | - | 4.50 | 52,499 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.14 | 949,088 |
| U.S. States by Governor Quiz | 0 | - | 4.42 | 17,008 |
| U.S. Political Parties in History | 0 | - | 4.43 | 26,259 |
| U.S. Government Agencies | 0 | - | 4.41 | 17,795 |
| Red State or Blue State Trait? | 0 | - | 4.44 | 48,899 |
| Countries with the Most Tanks | 0 | - | 4.89 | 76,068 |
| Coldest World Capitals | 0 | - | 4.96 | 128,398 |
| World Currency Quiz | 0 | - | 4.92 | 249,245 |
| Countries with the Most Millionaires | 0 | - | 4.85 | 85,004 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 42,014 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 66,888 |
| Cities with the Biggest Economies | 0 | - | 4.92 | 119,183 |
| Countries with the Most Christians | 0 | - | 4.93 | 122,778 |
| Least Christian Countries with Exceptions | 0 | - | 4.89 | 73,649 |
| Majority Muslim Countries | 0 | - | 4.97 | 315,187 |
| Buddhist Countries | 0 | - | 4.96 | 131,566 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,012,910 |
| Body Parts in History and Culture | 0 | - | 4.48 | 32,974 |
| History Analogies #1 | 0 | - | 4.47 | 76,228 |
| History Analogies #2 | 0 | - | 4.51 | 64,730 |
| Current Events by Year, 1990–2009 | 0 | - | 4.75 | 145,079 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 61,858 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 49,738 |
| History Analogies #3 | 0 | - | 4.54 | 66,883 |
| People Born on Islands | 0 | - | 4.43 | 40,305 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.72 | 54,188 |
| Which Came First? | 0 | - | 4.35 | 69,588 |
| Years in History by Picture | 0 | - | 4.43 | 30,340 |
| Valid Answer - World History #2 | 0 | - | 4.41 | 39,639 |
| Ancient Greece A-Z | 0 | - | 4.63 | 20,918 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,842 |
| Random History by Country | 0 | - | 4.53 | 31,650 |
| Valid Answer - World History #1 | 0 | - | 4.57 | 56,575 |
| History True or False #3 | 0 | - | 4.55 | 37,324 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.64 | 21,057 |
| The Dictator Files: Fidel Castro | 0 | - | 4.15 | 10,759 |
| A to Z: Legendary Creatures | 0 | - | 4.31 | 48,574 |
| WWII First Names | 0 | - | 4.46 | 38,859 |
| WWII for Dummies | 0 | - | 4.76 | 92,703 |
| Events in History #3 | 0 | - | 4.35 | 67,956 |
| Events in History #1 | 0 | - | 4.32 | 150,213 |
| Events in Ancient History | 0 | - | 4.49 | 32,293 |
| People Who Died Young #1 | 0 | - | 4.24 | 61,857 |
| Deaths by Date and Cause #1 | 0 | - | 4.39 | 77,996 |
| Deaths by Date and Cause #2 | 0 | - | 4.04 | 50,309 |
| Famous Firsts #1 | 0 | - | 4.42 | 65,947 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 66,714 |
| Invasions | 0 | - | 4.71 | 90,021 |
| First Names of Historical Figures #1 | 0 | - | 4.41 | 217,462 |
| This Day in History - May | 0 | - | 4.30 | 47,016 |
| This Day in History - June | 0 | - | 4.34 | 32,675 |
| This Day in History - November | 0 | - | 4.23 | 32,634 |
| This Day in History - December | 0 | - | 4.30 | 39,212 |
| The 19th Century | 0 | - | 4.50 | 62,465 |
| The 18th Century | 0 | - | 4.49 | 43,131 |
| The 16th Century | 0 | - | 4.71 | 49,998 |
| 19th Century A-Z | 0 | - | 4.82 | 34,564 |
| The 21st Century | 0 | - | 4.50 | 94,578 |
| Battle to Country | 0 | - | 4.92 | 36,171 |
| History by Picture - N | 0 | - | 4.41 | 36,793 |
| History Multiple Choice #1 | 0 | - | 4.44 | 76,369 |
| History Multiple Choice #2 | 0 | - | 4.43 | 47,066 |
| History Multiple Choice #3 | 0 | - | 4.45 | 46,005 |
| English Royal Consorts | 0 | - | 4.28 | 34,696 |
| The Reign of Queen Elizabeth I | 0 | - | 4.50 | 29,806 |
| British History A-Z | 0 | - | 4.47 | 39,819 |
| Dark Ages History | 0 | - | 4.43 | 31,670 |
| 30 Historical People You Probably Don't Know | 0 | - | 4.40 | 56,206 |
| The 2nd Millennium BC | 0 | - | 4.52 | 12,104 |
| The U.S. Government - How Does it Work? | 0 | - | 4.32 | 40,032 |
| World Capitals in the Answer | 0 | - | 4.94 | 67,960 |
| Most Powerful Countries Bordering Each Other | 0 | - | 4.85 | 49,872 |
| Monarchies of Europe | 0 | - | 4.88 | 87,637 |
| Monarchies of Asia | 0 | - | 4.95 | 54,457 |
| Capital Cities with the Least Precipitation | 0 | - | 4.90 | 27,525 |
| Countries with the Most Billionaires | 0 | - | 4.93 | 283,312 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 178,287 |
| Countries with the Most Exports | 0 | - | 4.96 | 138,719 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 163,711 |
| Countries by Oil Consumption | 0 | - | 4.96 | 112,077 |
| Richest Island Countries | 0 | - | 4.87 | 88,238 |
| Largest Economies in 2050 | 0 | - | 4.90 | 100,692 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 88,967 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 240,837 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 90,270 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.85 | 67,244 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 99,301 |
| Countries with the Most Catholics | 0 | - | 4.91 | 94,496 |
| Catholic Countries in Europe | 0 | - | 4.87 | 84,532 |
| Orthodox Countries | 0 | - | 4.91 | 118,339 |
| Countries with the Most Muslims | 0 | - | 4.93 | 132,778 |
| Divided World City Name Puzzle #1 | 0 | - | 4.91 | 40,466 |
