| Territory Changes in World War I | 0 | - | 4.86 | 46,295 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,169 |
| WWII Geography | 0 | - | 4.81 | 119,482 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,653 |
| WWI... or WWII? | 0 | - | 4.85 | 140,929 |
| World War I Quiz | 0 | - | 4.78 | 100,372 |
| WWI A-Z | 0 | - | 4.50 | 38,061 |
| Military History Vocabulary | 0 | - | 4.91 | 66,734 |
| Notable People of WWII | 0 | - | 4.53 | 85,372 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,521 |
| WWII Trivia #1 | 0 | - | 4.36 | 176,800 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,384 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,842 |
| WWII True or False? | 0 | - | 4.56 | 57,131 |
| Countries That Were Invaded | 0 | - | 4.54 | 97,000 |
| WWII Movies by Plot | 0 | - | 4.21 | 26,983 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,494 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,386 |
| WWII Decoder | 0 | - | 4.41 | 53,104 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,854 |
| Name the War | 0 | - | 4.37 | 200,964 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,435 |
| Names for Warriors | 0 | - | 4.40 | 36,824 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,545 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,180 |
| Countries with NO Military | 0 | - | 4.97 | 61,317 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 85,213 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,461 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 15,030 |
| Military History A-Z | 0 | - | 4.20 | 21,064 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,655 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,104 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,175 |
| People Who Died in Battle | 0 | - | 4.35 | 22,279 |
| Top Arms Importing Countries | 0 | - | 4.69 | 60,992 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,149 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,952 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,586 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,815 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,570 |
| WWII for Dummies | 0 | - | 4.80 | 104,026 |
| U.S. Military Acronyms | 0 | - | 4.39 | 100,898 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,251 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,093 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,258 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,550 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,827 |
| Empires by Maps | 0 | - | 4.98 | 118,856 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,723 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,327 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,143 |
| Countries with U.S. Troops | 0 | - | 4.38 | 131,736 |
| Countries With the Largest Air Forces | 0 | - | 4.47 | 51,289 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,833 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,307,194 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,065 |
| Metals of Antiquity | 0 | - | 4.94 | 93,018 |
| Popular Royal Names | 0 | - | 4.27 | 124,588 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,269 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,350 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,175 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,945 |
| First Names of Painters | 0 | - | 4.43 | 59,657 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,546 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,743 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,227 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,956 |
| Geography of the British Empire | 0 | - | 4.48 | 39,529 |
| Weapons by Picture | 0 | - | 4.13 | 20,917 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,041 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,117 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,530 |
| Influential Women in History | 0 | - | 4.42 | 35,201 |
| Cradles of Civilization | 0 | - | 4.46 | 39,261 |
| History of The Netherlands | 0 | - | 4.46 | 17,339 |
| Materials From History #1 | 0 | - | 4.56 | 51,214 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,274 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,687 |
| UN Secretaries-General | 0 | - | 4.40 | 7,771 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,558 |
| Recently Independent Countries | 0 | - | 4.98 | 158,147 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 49,756 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,357 |
| Famous Explorers | 0 | - | 4.58 | 36,009 |
| Famous Empires by Description | 0 | - | 4.73 | 118,032 |
| Answers by Time Period | 0 | - | 4.63 | 55,340 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,820 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,802 |
| 17th Century A-Z | 0 | - | 4.78 | 34,203 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,050 |
| French History Multiple Choice | 0 | - | 4.55 | 32,904 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.95 | 40,756 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 54,949 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,702 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,089 |
| Medieval English History | 0 | - | 4.53 | 43,350 |
| History of Germany | 0 | - | 4.39 | 52,667 |
| Most Important People in History | 0 | - | 3.98 | 50,458 |
| Fictional Military Characters Quiz | 0 | - | 4.27 | 19,568 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,032 |
| Countries with the Least Dense Road Networks | 0 | - | 4.81 | 41,365 |
| Monarchies of the World | 0 | - | 4.94 | 166,976 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 111,871 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,120 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 113,618 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,745 |
| Disney Animated Characters | 0 | - | 4.88 | 599,678 |
| People on Money by Country | 0 | - | 4.83 | 60,063 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,017 |
| Fast Math - Addition | 0 | - | 4.87 | 520,595 |
| NATO Countries | 0 | - | 4.98 | 276,963 |
| EU Countries Quiz | 0 | - | 4.99 | 270,699 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,455 |
| 7 Deadly Sins | 0 | - | 4.88 | 396,002 |
| Books of the Protestant Bible | 0 | - | 4.89 | 207,796 |
| Majority Muslim Countries | 0 | - | 4.98 | 370,391 |
| Astronomy Quiz | 0 | - | 4.90 | 81,908 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,021 |
| Solar System Trivia | 0 | - | 4.93 | 46,167 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.89 | 65,268 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,882 |
| Countries that Start with a Vowel | 0 | - | 4.98 | 128,997 |
| Countries with the Most JetPunk Users | 0 | - | 4.99 | 165,937 |
| Most Common JetPunk Answers - Countries | 0 | - | 4.91 | 86,859 |
| Countries By Wikipedia Word Clouds | 0 | - | 4.84 | 39,194 |
| Countries with the Most Major Earthquakes | 0 | - | 4.94 | 116,893 |
| Country Superlatives - Top 2 | 0 | - | 4.99 | 70,300 |
| Former Flags | 0 | - | 4.97 | 106,901 |
| Years in History by Picture | 0 | - | 4.44 | 35,180 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,024 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,262 |
| Materials From History #2 | 0 | - | 4.59 | 31,330 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,630 |
| Former Capitals | 0 | - | 4.88 | 71,210 |
| Cold War Decoder | 0 | - | 4.83 | 52,015 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,314 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,334 |
| Events in History #2 | 0 | - | 4.49 | 71,483 |
| Events in History #4 | 0 | - | 4.44 | 44,145 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,570 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,860 |
| Assassinations in History | 0 | - | 4.21 | 66,027 |
| Famous Seconds | 0 | - | 4.22 | 46,423 |
| Ages and Eras | 0 | - | 4.38 | 67,527 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,424 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,668 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,075 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,862 |
| Female Historical Figures | 0 | - | 4.27 | 33,142 |
| Historical Blunders | 0 | - | 4.33 | 91,760 |
| Territorial Accessions | 0 | - | 4.38 | 34,675 |
| People Known as "The Great" | 0 | - | 4.46 | 24,565 |
| This Day in History - July | 0 | - | 4.49 | 36,382 |
| This Day in History - August | 0 | - | 4.42 | 43,275 |
| This Day in History - September | 0 | - | 4.55 | 57,298 |
| This Day in History - October | 0 | - | 4.49 | 37,561 |
| This Day in History - January | 0 | - | 4.50 | 46,595 |
| This Day in History - March | 0 | - | 4.45 | 43,558 |
| Ancient Civilizations | 0 | - | 4.63 | 37,794 |
| Battle to Country | 0 | - | 4.91 | 52,651 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,759 |
| The Places They Went #1 | 0 | - | 4.74 | 33,458 |
| Famous Inventors | 0 | - | 4.43 | 43,470 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,142 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,567 |
| European History for Dummies | 0 | - | 4.83 | 89,429 |
| History of Scotland | 0 | - | 4.51 | 21,021 |
| Kings of France Quiz | 0 | - | 4.20 | 32,588 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,011,523 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,202 |
| Countries with the Most Skyscrapers | 0 | - | 4.92 | 143,559 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,365 |
| Countries with the Tallest Buildings | 0 | - | 4.93 | 103,897 |
| Coldest Countries | 0 | - | 4.97 | 137,389 |
| Coldest World Capitals | 0 | - | 4.95 | 133,122 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,307 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,413 |
| Capital Cities with the Least Precipitation | 0 | - | 4.89 | 29,061 |
| World Currency Quiz | 0 | - | 4.92 | 299,319 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,302 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,347 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,162 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,392 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,860 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,680 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,642 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,265 |
| Richest Island Countries | 0 | - | 4.84 | 99,703 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,857 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,775 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 264,144 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 103,343 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,858 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,523 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,506 |
| Buddhist Countries | 0 | - | 4.96 | 143,136 |
| The Sun Quiz | 0 | - | 4.93 | 34,214 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,092,046 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,710 |
| Capital Cities by Cartoon Riddles | 0 | - | 4.98 | 86,794 |
