| Normandy D-Day Beaches | 0 | - | 4.83 | 40,279 |
| WWII Geography | 0 | - | 4.81 | 119,916 |
| WWII Figures by Picture | 0 | - | 4.89 | 64,252 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,496 |
| Notable People of WWII | 0 | - | 4.53 | 85,496 |
| WWI... or WWII? | 0 | - | 4.85 | 141,469 |
| Military History Vocabulary | 0 | - | 4.91 | 66,883 |
| WWII Trivia #1 | 0 | - | 4.36 | 177,187 |
| World War I Quiz | 0 | - | 4.78 | 100,588 |
| WWI A-Z | 0 | - | 4.50 | 38,172 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,525 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 55,153 |
| WWII True or False? | 0 | - | 4.56 | 57,294 |
| WWII Movies by Plot | 0 | - | 4.21 | 27,035 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,697 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,502 |
| WWII Decoder | 0 | - | 4.41 | 53,368 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,194 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,921 |
| Name the War | 0 | - | 4.37 | 201,236 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,477 |
| Names for Warriors | 0 | - | 4.40 | 36,867 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,518 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,587 |
| Countries with NO Military | 0 | - | 4.97 | 61,667 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 89,485 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,816 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 15,082 |
| Military History A-Z | 0 | - | 4.20 | 21,099 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,832 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,440 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,292 |
| People Who Died in Battle | 0 | - | 4.35 | 22,293 |
| Top Arms Importing Countries | 0 | - | 4.70 | 65,123 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,209 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,231 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,771 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,009 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,634 |
| WWII for Dummies | 0 | - | 4.80 | 104,425 |
| U.S. Military Acronyms | 0 | - | 4.39 | 100,979 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,300 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,131 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,322 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,676 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,228 |
| Empires by Maps | 0 | - | 4.98 | 119,452 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,822 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,475 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,248 |
| Countries with U.S. Troops | 0 | - | 4.38 | 131,885 |
| Countries With the Largest Air Forces | 0 | - | 4.47 | 51,353 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,964 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,310,784 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,131 |
| Metals of Antiquity | 0 | - | 4.94 | 93,161 |
| Popular Royal Names | 0 | - | 4.27 | 124,737 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,449 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,836 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,279 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 705,883 |
| First Names of Painters | 0 | - | 4.43 | 59,740 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,780 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,065 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,270 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,123 |
| Geography of the British Empire | 0 | - | 4.48 | 39,587 |
| Weapons by Picture | 0 | - | 4.13 | 20,982 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,472 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,155 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,772 |
| Influential Women in History | 0 | - | 4.42 | 35,315 |
| Cradles of Civilization | 0 | - | 4.46 | 39,390 |
| History of The Netherlands | 0 | - | 4.46 | 17,371 |
| Materials From History #1 | 0 | - | 4.56 | 51,348 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,395 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,757 |
| UN Secretaries-General | 0 | - | 4.40 | 7,779 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,578 |
| Recently Independent Countries | 0 | - | 4.98 | 158,421 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 49,930 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,555 |
| Famous Explorers | 0 | - | 4.58 | 36,057 |
| Famous Empires by Description | 0 | - | 4.73 | 118,186 |
| Answers by Time Period | 0 | - | 4.64 | 55,432 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,874 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,845 |
| 17th Century A-Z | 0 | - | 4.78 | 34,240 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,161 |
| French History Multiple Choice | 0 | - | 4.55 | 32,957 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,871 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,126 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,726 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,113 |
| Medieval English History | 0 | - | 4.53 | 43,412 |
| History of Germany | 0 | - | 4.39 | 52,730 |
| Most Important People in History | 0 | - | 3.98 | 50,554 |
| Fictional Military Characters Quiz | 0 | - | 4.27 | 19,588 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,511 |
| Countries with the Least Dense Road Networks | 0 | - | 4.81 | 41,445 |
| Monarchies of the World | 0 | - | 4.94 | 167,487 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 112,123 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,353 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 113,861 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,865 |
| Disney Animated Characters | 0 | - | 4.88 | 600,379 |
| People on Money by Country | 0 | - | 4.83 | 60,177 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,212 |
| Fast Math - Addition | 0 | - | 4.87 | 521,496 |
| NATO Countries | 0 | - | 4.98 | 278,246 |
| EU Countries Quiz | 0 | - | 4.99 | 271,805 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,141 |
| 7 Deadly Sins | 0 | - | 4.88 | 397,890 |
| Books of the Protestant Bible | 0 | - | 4.89 | 208,816 |
| Majority Muslim Countries | 0 | - | 4.98 | 372,045 |
| Astronomy Quiz | 0 | - | 4.90 | 82,153 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,482 |
| Solar System Trivia | 0 | - | 4.93 | 46,352 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.91 | 65,406 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,061 |
| Countries with the Most Rail Travel | 0 | - | 4.84 | 37,126 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 129,544 |
| Countries with the Most JetPunk Users | 0 | - | 4.99 | 166,640 |
| Most Common JetPunk Answers - Countries | 0 | - | 4.91 | 87,125 |
| Countries By Wikipedia Word Clouds | 0 | - | 4.83 | 39,397 |
| Countries with the Most Major Earthquakes | 0 | - | 4.94 | 117,031 |
| Country Superlatives - Top 2 | 0 | - | 4.99 | 70,348 |
| Former Flags | 0 | - | 4.97 | 107,214 |
| Years in History by Picture | 0 | - | 4.44 | 35,335 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,085 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,435 |
| Materials From History #2 | 0 | - | 4.59 | 31,403 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,774 |
| Former Capitals | 0 | - | 4.88 | 71,298 |
| Cold War Decoder | 0 | - | 4.83 | 52,136 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,378 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,360 |
| Events in History #2 | 0 | - | 4.49 | 71,568 |
| Events in History #4 | 0 | - | 4.44 | 44,206 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,809 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,906 |
| Assassinations in History | 0 | - | 4.21 | 66,093 |
| Famous Seconds | 0 | - | 4.22 | 46,498 |
| Ages and Eras | 0 | - | 4.38 | 67,585 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,449 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,713 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,109 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,914 |
| Female Historical Figures | 0 | - | 4.27 | 33,185 |
| Historical Blunders | 0 | - | 4.34 | 91,824 |
| Territorial Accessions | 0 | - | 4.39 | 34,711 |
| People Known as "The Great" | 0 | - | 4.46 | 24,596 |
| This Day in History - July | 0 | - | 4.49 | 36,417 |
| This Day in History - August | 0 | - | 4.42 | 43,314 |
| This Day in History - September | 0 | - | 4.55 | 57,355 |
| This Day in History - October | 0 | - | 4.49 | 37,585 |
| This Day in History - January | 0 | - | 4.50 | 46,642 |
| This Day in History - March | 0 | - | 4.45 | 43,595 |
| Ancient Civilizations | 0 | - | 4.64 | 37,852 |
| Battle to Country | 0 | - | 4.91 | 52,952 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,838 |
| The Places They Went #1 | 0 | - | 4.74 | 33,482 |
| Famous Inventors | 0 | - | 4.43 | 43,497 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,190 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,695 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.91 | 28,401 |
| European History for Dummies | 0 | - | 4.83 | 89,607 |
| History of Scotland | 0 | - | 4.51 | 21,051 |
| Kings of France Quiz | 0 | - | 4.20 | 32,636 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,012,384 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,262 |
| Countries with the Most Skyscrapers | 0 | - | 4.92 | 143,762 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,443 |
| Countries with the Tallest Buildings | 0 | - | 4.93 | 104,077 |
| Coldest Countries | 0 | - | 4.97 | 138,104 |
| Coldest World Capitals | 0 | - | 4.95 | 133,226 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,415 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,528 |
| Capital Cities with the Least Precipitation | 0 | - | 4.89 | 29,093 |
| World Currency Quiz | 0 | - | 4.92 | 300,710 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,037 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,814 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,533 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,762 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,136 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,088 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,843 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,469 |
| Richest Island Countries | 0 | - | 4.84 | 100,010 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 130,131 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,016 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 268,775 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 103,735 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,123 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,891 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,861 |
| Buddhist Countries | 0 | - | 4.96 | 143,446 |
| The Sun Quiz | 0 | - | 4.93 | 34,354 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,094,078 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,797 |
