| Battle to Country | 0 | - | 4.91 | 52,442 |
| Words for Leaders | 0 | - | 4.77 | 254,898 |
| Political Figures by Last Name #1 | 0 | - | 4.56 | 67,347 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,244 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,087 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,134 |
| World Leaders by Picture | 0 | - | 4.36 | 263,176 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,973 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,634 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,910 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,622 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,198 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,028 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,168 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,426 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,597 |
| Dictators by Picture | 0 | - | 4.17 | 48,835 |
| Military History Vocabulary | 0 | - | 4.91 | 66,585 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.18 | 46,951 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,042 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,737 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,643 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,281 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,629 |
| UN Secretaries-General | 0 | - | 4.40 | 7,755 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,828 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,645 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,532 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,073 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,178 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,335 |
| Name the English Monarchs | 0 | - | 4.92 | 497,410 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,480 |
| "Second Best" History Edition | 0 | - | 4.93 | 61,626 |
| WWII Geography | 0 | - | 4.81 | 119,263 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,416 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,131 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,324 |
| Empires by Maps | 0 | - | 4.98 | 118,179 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,099 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,615 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,150 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,247 |
| WWII First Names | 0 | - | 4.45 | 41,534 |
| WWI... or WWII? | 0 | - | 4.85 | 140,476 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 84,689 |
| Countries in World War I | 0 | - | 4.88 | 226,229 |
| The American Civil War | 0 | - | 4.62 | 52,099 |
| Political Quotes | 0 | - | 4.17 | 19,798 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,036 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,576 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,718 |
| Metals of Antiquity | 0 | - | 4.94 | 92,814 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,092 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,068 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,986 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,243 |
| Name the Popes Quiz | 0 | - | 4.47 | 136,964 |
| Countries of the Popes | 0 | - | 4.79 | 127,080 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 703,996 |
| Countries in World War II | 0 | - | 4.53 | 903,485 |
| Notable People of WWII | 0 | - | 4.53 | 85,283 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,366 |
| World War I Quiz | 0 | - | 4.78 | 100,163 |
| WWI A-Z | 0 | - | 4.50 | 37,995 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,298 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,610 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,395 |
| Influential Women in History | 0 | - | 4.42 | 34,898 |
| Cradles of Civilization | 0 | - | 4.46 | 38,957 |
| Materials From History #1 | 0 | - | 4.56 | 50,518 |
| Historical Countries by Ruler | 0 | - | 4.48 | 47,983 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,561 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,483 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,068 |
| Famous Explorers | 0 | - | 4.58 | 35,911 |
| Famous Empires by Description | 0 | - | 4.70 | 117,467 |
| Answers by Time Period | 0 | - | 4.63 | 55,227 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.95 | 40,651 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 54,816 |
| NATO Countries | 0 | - | 4.98 | 275,159 |
| EU Countries Quiz | 0 | - | 4.99 | 269,466 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,709 |
| Former Flags | 0 | - | 4.97 | 106,536 |
| Years in History by Picture | 0 | - | 4.44 | 35,052 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,148 |
| Materials From History #2 | 0 | - | 4.59 | 30,894 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,293 |
| WWII Trivia #1 | 0 | - | 4.36 | 176,501 |
| Important Cities in WWII | 0 | - | 4.42 | 92,820 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,234 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,695 |
| WWII True or False? | 0 | - | 4.56 | 56,972 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,538 |
| Cold War Decoder | 0 | - | 4.83 | 51,879 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,298 |
| Events in History #2 | 0 | - | 4.49 | 71,380 |
| Events in History #4 | 0 | - | 4.44 | 44,068 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,272 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,786 |
| Assassinations in History | 0 | - | 4.20 | 65,920 |
| Famous Seconds | 0 | - | 4.22 | 46,365 |
| Ages and Eras Quiz | 0 | - | 4.38 | 67,417 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,376 |
| Titled People Quiz #1 | 0 | - | 4.10 | 45,584 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,004 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,802 |
| Female Historical Figures | 0 | - | 4.31 | 33,073 |
| Historical Blunders | 0 | - | 4.33 | 91,636 |
| Territorial Accessions | 0 | - | 4.38 | 34,613 |
| People Known as "The Great" | 0 | - | 4.46 | 24,491 |
| This Day in History - July | 0 | - | 4.49 | 36,356 |
| This Day in History - August | 0 | - | 4.41 | 43,233 |
| This Day in History - September | 0 | - | 4.55 | 57,238 |
| This Day in History - October | 0 | - | 4.49 | 37,545 |
| This Day in History - January | 0 | - | 4.53 | 46,556 |
| This Day in History - March | 0 | - | 4.45 | 43,527 |
| Ancient Civilizations | 0 | - | 4.63 | 37,725 |
| The Places They Went #1 | 0 | - | 4.74 | 33,432 |
| Famous Inventors | 0 | - | 4.43 | 43,440 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,417 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,251 |
| European History for Dummies | 0 | - | 4.82 | 89,225 |
| British History A-Z #1 | 0 | - | 4.45 | 45,748 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,254 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,010,019 |
| U.S. States by Governor | 0 | - | 4.43 | 17,971 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,555 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,138 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,528 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 54,890 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,266 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,812 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,675 |
| Body Parts in History and Culture | 0 | - | 4.42 | 34,994 |
| History Analogies #1 | 0 | - | 4.53 | 89,747 |
| History Analogies #2 | 0 | - | 4.49 | 76,965 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 152,068 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 64,927 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 51,907 |
| History Analogies #3 | 0 | - | 4.61 | 80,402 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,098 |
| Which Came First? | 0 | - | 4.37 | 74,363 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,483 |
| Random History by Country | 0 | - | 4.53 | 34,636 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,504 |
| Animals in World History | 0 | - | 4.74 | 44,190 |
| People - Real or Fictional? | 0 | - | 4.56 | 58,416 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,328 |
| History True or False #3 | 0 | - | 4.43 | 55,880 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,806 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,261 |
| Pope Facts | 0 | - | 4.39 | 31,014 |
| A to Z: Legendary Creatures | 0 | - | 4.26 | 52,704 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,808 |
| Cold War Trivia #1 | 0 | - | 4.41 | 56,903 |
| Events in History #3 | 0 | - | 4.40 | 71,411 |
| Events in History #1 | 0 | - | 4.34 | 157,195 |
| Events in Ancient History | 0 | - | 4.50 | 35,669 |
| People Who Died Young #1 | 0 | - | 4.24 | 63,516 |
| Deaths by Date and Cause #1 | 0 | - | 4.37 | 94,845 |
| Deaths by Date and Cause #2 | 0 | - | 4.15 | 67,440 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,486 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,869 |
| This Day in History - April | 0 | - | 4.39 | 44,377 |
| This Day in History - May | 0 | - | 4.32 | 48,236 |
| This Day in History - June | 0 | - | 4.35 | 33,425 |
| This Day in History - November | 0 | - | 4.24 | 33,524 |
| This Day in History - December | 0 | - | 4.31 | 40,441 |
| This Day in History - February | 0 | - | 4.38 | 39,690 |
| The 19th Century | 0 | - | 4.53 | 67,851 |
| The 18th Century | 0 | - | 4.52 | 53,099 |
| The 16th Century | 0 | - | 4.77 | 58,718 |
| The 9th and 10th Century | 0 | - | 4.54 | 37,520 |
| The 21st Century | 0 | - | 4.48 | 105,222 |
| Military History A-Z | 0 | - | 4.20 | 21,028 |
| The Life of King David | 0 | - | 4.37 | 14,054 |
| History Multiple Choice #1 | 0 | - | 4.46 | 81,479 |
| Years in History #2 - Multiple Choice | 0 | - | 4.43 | 41,383 |
| History Multiple Choice #2 | 0 | - | 4.43 | 49,775 |
| History Multiple Choice #3 | 0 | - | 4.45 | 48,514 |
| History Multiple Choice #5 | 0 | - | 4.49 | 32,248 |
| Three Real and One Fake - World History | 0 | - | 4.44 | 38,168 |
| English Royal Consorts | 0 | - | 4.37 | 37,140 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,584 |
| Kings of France Quiz | 0 | - | 4.20 | 32,537 |
| Dark Ages History | 0 | - | 4.42 | 32,667 |
| German History A-Z | 0 | - | 4.49 | 24,174 |
| 30 Historical People You Probably Don't Know | 0 | - | 4.36 | 60,750 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 335,241 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,169 |
| Senators Who Ran For President | 0 | - | 4.23 | 16,985 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 21,962 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,519 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,217 |
| Monarchies of Europe | 0 | - | 4.90 | 97,216 |
| Monarchies of Asia | 0 | - | 4.97 | 70,541 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,171 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,036 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,452 |
