| Territory Changes in World War I | 0 | - | 4.86 | 46,183 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,078 |
| WWII Geography | 0 | - | 4.81 | 119,276 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,428 |
| WWI... or WWII? | 0 | - | 4.85 | 140,498 |
| World War I Quiz | 0 | - | 4.78 | 100,173 |
| WWI A-Z | 0 | - | 4.50 | 37,997 |
| Military History Vocabulary | 0 | - | 4.91 | 66,598 |
| Notable People of WWII | 0 | - | 4.53 | 85,290 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,372 |
| WWII Trivia #1 | 0 | - | 4.36 | 176,512 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,238 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,703 |
| WWII True or False? | 0 | - | 4.56 | 56,980 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,871 |
| WWII Movies by Plot | 0 | - | 4.21 | 26,959 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,316 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,283 |
| WWII Decoder | 0 | - | 4.41 | 53,005 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,787 |
| Name the War Quiz | 0 | - | 4.37 | 200,666 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,394 |
| Names for Warriors | 0 | - | 4.40 | 36,780 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,574 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,775 |
| Countries with NO Military | 0 | - | 4.97 | 61,079 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 85,007 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,165 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 15,000 |
| Military History A-Z | 0 | - | 4.20 | 21,029 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,494 |
| "Second Best" History Edition | 0 | - | 4.93 | 61,636 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,090 |
| People Who Died in Battle | 0 | - | 4.35 | 22,264 |
| Top Arms Importing Countries | 0 | - | 4.69 | 60,867 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,102 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,637 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,399 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,567 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,513 |
| WWII for Dummies | 0 | - | 4.80 | 103,720 |
| U.S. Military Acronyms | 0 | - | 4.39 | 100,809 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,198 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,031 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,173 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,431 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,345 |
| Empires by Maps | 0 | - | 4.98 | 118,211 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,603 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,156 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,042 |
| Countries with U.S. Troops | 0 | - | 4.38 | 131,584 |
| Countries With the Largest Air Forces | 0 | - | 4.47 | 51,215 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,693 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,303,667 |
| Google What's the Difference? - History | 0 | - | 4.20 | 45,994 |
| Metals of Antiquity | 0 | - | 4.94 | 92,822 |
| Popular Royal Names | 0 | - | 4.27 | 124,436 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,098 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,079 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,046 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,024 |
| First Names of Painters | 0 | - | 4.43 | 59,579 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,447 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,614 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,154 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,711 |
| Geography of the British Empire | 0 | - | 4.48 | 39,464 |
| Weapons by Picture | 0 | - | 4.13 | 20,863 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,665 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,079 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,401 |
| Influential Women in History | 0 | - | 4.42 | 34,900 |
| Cradles of Civilization | 0 | - | 4.46 | 38,964 |
| History of The Netherlands | 0 | - | 4.46 | 17,299 |
| Materials From History #1 | 0 | - | 4.56 | 50,522 |
| Historical Countries by Ruler | 0 | - | 4.48 | 47,991 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,631 |
| UN Secretaries-General | 0 | - | 4.40 | 7,755 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,533 |
| Recently Independent Countries | 0 | - | 4.98 | 157,883 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 49,670 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,075 |
| Famous Explorers | 0 | - | 4.58 | 35,914 |
| Famous Empires by Description | 0 | - | 4.70 | 117,470 |
| Answers by Time Period | 0 | - | 4.63 | 55,231 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,743 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,756 |
| 17th Century A-Z | 0 | - | 4.78 | 34,145 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,915 |
| French History Multiple Choice | 0 | - | 4.55 | 32,858 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.95 | 40,653 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 54,821 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,684 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,067 |
| Medieval English History | 0 | - | 4.53 | 43,294 |
| History of Germany | 0 | - | 4.39 | 52,593 |
| Most Important People in History | 0 | - | 3.99 | 50,351 |
| Fictional Military Characters Quiz | 0 | - | 4.27 | 19,546 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,607 |
| Countries with the Least Dense Road Networks | 0 | - | 4.81 | 41,293 |
| Monarchies of the World | 0 | - | 4.94 | 166,417 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 111,422 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 110,826 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 113,350 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,614 |
| Disney Animated Characters | 0 | - | 4.88 | 598,838 |
| People on Money by Country | 0 | - | 4.84 | 59,943 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,847 |
| Fast Math - Addition | 0 | - | 4.87 | 519,550 |
| NATO Countries | 0 | - | 4.98 | 275,217 |
| EU Countries Quiz | 0 | - | 4.99 | 269,518 |
| Top Five Countries by Religion | 0 | - | 4.93 | 168,816 |
| 7 Deadly Sins | 0 | - | 4.88 | 394,370 |
| Books of the Protestant Bible | 0 | - | 4.89 | 206,902 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,078 |
| Astronomy Quiz | 0 | - | 4.89 | 81,592 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 135,592 |
| Solar System Trivia | 0 | - | 4.93 | 45,922 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.89 | 65,110 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,647 |
| Countries that Start with a Vowel | 0 | - | 4.98 | 128,459 |
| Countries with the Most JetPunk Users | 0 | - | 4.99 | 165,252 |
| Most Common JetPunk Answers - Countries | 0 | - | 4.91 | 86,574 |
| Countries By Wikipedia Word Clouds | 0 | - | 4.84 | 39,004 |
| Countries with the Most Major Earthquakes | 0 | - | 4.94 | 116,711 |
| Country Superlatives - Top 2 | 0 | - | 4.99 | 70,238 |
| Former Flags | 0 | - | 4.97 | 106,543 |
| Years in History by Picture | 0 | - | 4.44 | 35,060 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,972 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,150 |
| Materials From History #2 | 0 | - | 4.59 | 30,895 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,486 |
| Former Capitals | 0 | - | 4.88 | 71,093 |
| Cold War Decoder | 0 | - | 4.83 | 51,883 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,245 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,301 |
| Events in History #2 | 0 | - | 4.49 | 71,386 |
| Events in History #4 | 0 | - | 4.44 | 44,073 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,282 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,786 |
| Assassinations in History | 0 | - | 4.20 | 65,922 |
| Famous Seconds | 0 | - | 4.22 | 46,366 |
| Ages and Eras Quiz | 0 | - | 4.38 | 67,419 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,377 |
| Titled People Quiz #1 | 0 | - | 4.10 | 45,585 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,004 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,804 |
| Female Historical Figures | 0 | - | 4.31 | 33,074 |
| Historical Blunders | 0 | - | 4.33 | 91,637 |
| Territorial Accessions | 0 | - | 4.38 | 34,614 |
| People Known as "The Great" | 0 | - | 4.46 | 24,492 |
| This Day in History - July | 0 | - | 4.49 | 36,357 |
| This Day in History - August | 0 | - | 4.41 | 43,234 |
| This Day in History - September | 0 | - | 4.55 | 57,240 |
| 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 | 43,529 |
| Ancient Civilizations | 0 | - | 4.63 | 37,726 |
| Battle to Country | 0 | - | 4.91 | 52,450 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,645 |
| The Places They Went #1 | 0 | - | 4.74 | 33,433 |
| Famous Inventors | 0 | - | 4.43 | 43,442 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,102 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,425 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,254 |
| European History for Dummies | 0 | - | 4.82 | 89,237 |
| History of Scotland | 0 | - | 4.51 | 20,991 |
| Kings of France Quiz | 0 | - | 4.20 | 32,539 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,010,054 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,124 |
| Countries with the Most Skyscrapers | 0 | - | 4.92 | 143,356 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,268 |
| Countries with the Tallest Buildings | 0 | - | 4.93 | 103,532 |
| Coldest Countries | 0 | - | 4.97 | 137,134 |
| Coldest World Capitals | 0 | - | 4.95 | 132,991 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,199 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,305 |
| Capital Cities with the Least Precipitation | 0 | - | 4.89 | 29,008 |
| World Currency Quiz | 0 | - | 4.92 | 297,913 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,540 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 121,887 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 193,764 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,041 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,651 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,369 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,470 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,034 |
| Richest Island Countries | 0 | - | 4.84 | 99,411 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,526 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,558 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 261,785 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 102,834 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,615 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,193 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,173 |
| Buddhist Countries | 0 | - | 4.96 | 142,839 |
| The Sun Quiz | 0 | - | 4.93 | 34,044 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,089,944 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,555 |
