| Territory Changes in World War I | 0 | - | 4.87 | 46,660 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,371 |
| WWII Geography | 0 | - | 4.81 | 120,127 |
| WWII Figures by Picture | 0 | - | 4.89 | 65,150 |
| WWI... or WWII? | 0 | - | 4.85 | 141,901 |
| World War I Quiz | 0 | - | 4.78 | 101,142 |
| WWI A-Z | 0 | - | 4.50 | 38,271 |
| Military History Vocabulary | 0 | - | 4.91 | 67,035 |
| Notable People of WWII | 0 | - | 4.53 | 85,843 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,868 |
| WWII Trivia #1 | 0 | - | 4.36 | 177,456 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,657 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 55,296 |
| WWII True or False? | 0 | - | 4.56 | 57,428 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,323 |
| WWII Movies by Plot | 0 | - | 4.21 | 27,062 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,855 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,597 |
| WWII Decoder | 0 | - | 4.41 | 53,477 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,960 |
| Name the War | 0 | - | 4.37 | 201,463 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,521 |
| Names for Warriors | 0 | - | 4.40 | 36,902 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,444 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,894 |
| Countries with NO Military | 0 | - | 4.97 | 61,959 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 90,816 |
| Countries with the Most Tanks | 0 | - | 4.91 | 107,134 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,122 |
| Military History A-Z | 0 | - | 4.20 | 21,139 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,995 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,775 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,381 |
| People Who Died in Battle | 0 | - | 4.35 | 22,308 |
| Top Arms Importing Countries | 0 | - | 4.73 | 65,894 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,249 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,484 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,964 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,174 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,701 |
| WWII for Dummies | 0 | - | 4.79 | 104,715 |
| U.S. Military Acronyms | 0 | - | 4.39 | 101,067 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,362 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,188 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,392 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,786 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,557 |
| Empires by Maps | 0 | - | 4.98 | 119,980 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,937 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,611 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,331 |
| Countries with U.S. Troops | 0 | - | 4.38 | 131,997 |
| Countries With the Largest Air Forces | 0 | - | 4.47 | 51,414 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,076 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,313,944 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,194 |
| Metals of Antiquity | 0 | - | 4.95 | 93,318 |
| Popular Royal Names | 0 | - | 4.27 | 124,848 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,589 |
| History: What Came First? #1 | 0 | - | 4.87 | 105,074 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,395 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,675 |
| First Names of Painters | 0 | - | 4.43 | 59,808 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,876 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,195 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,307 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,310 |
| Geography of the British Empire | 0 | - | 4.48 | 39,631 |
| Weapons by Picture | 0 | - | 4.13 | 21,027 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,858 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,189 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,885 |
| Influential Women in History | 0 | - | 4.42 | 35,507 |
| Cradles of Civilization | 0 | - | 4.46 | 39,561 |
| History of The Netherlands | 0 | - | 4.46 | 17,407 |
| Materials From History #1 | 0 | - | 4.56 | 51,482 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,542 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,814 |
| UN Secretaries-General | 0 | - | 4.40 | 7,786 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,598 |
| Recently Independent Countries | 0 | - | 4.98 | 159,004 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 50,008 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,744 |
| Famous Explorers | 0 | - | 4.58 | 36,121 |
| Famous Empires by Description | 0 | - | 4.73 | 118,327 |
| Answers by Time Period | 0 | - | 4.64 | 55,518 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,942 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,876 |
| 17th Century A-Z | 0 | - | 4.78 | 34,600 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,254 |
| French History Multiple Choice | 0 | - | 4.55 | 33,002 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,949 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,238 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,739 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,133 |
| Medieval English History | 0 | - | 4.53 | 43,464 |
| History of Germany | 0 | - | 4.39 | 52,780 |
| Most Important People in History | 0 | - | 3.97 | 50,645 |
| Fictional Military Characters Quiz | 0 | - | 4.27 | 19,605 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,995 |
| Countries with the Least Dense Road Networks | 0 | - | 4.81 | 41,507 |
| Monarchies of the World | 0 | - | 4.94 | 168,255 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,346 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,591 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 114,106 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 75,004 |
| Disney Animated Characters | 0 | - | 4.88 | 600,986 |
| People on Money by Country | 0 | - | 4.83 | 60,285 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,401 |
| Fast Math - Addition | 0 | - | 4.87 | 522,202 |
| NATO Countries | 0 | - | 4.98 | 279,305 |
| EU Countries Quiz | 0 | - | 4.99 | 272,901 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,752 |
| 7 Deadly Sins | 0 | - | 4.88 | 399,151 |
| Books of the Protestant Bible | 0 | - | 4.89 | 209,434 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,209 |
| Astronomy Quiz | 0 | - | 4.90 | 82,401 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,911 |
| Solar System Trivia | 0 | - | 4.93 | 46,501 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.91 | 65,561 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,251 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 130,021 |
| Countries with the Most JetPunk Users | 0 | - | 4.99 | 167,526 |
| Most Common JetPunk Answers - Countries | 0 | - | 4.91 | 87,386 |
| Countries By Wikipedia Word Clouds | 0 | - | 4.83 | 39,589 |
| Countries with the Most Major Earthquakes | 0 | - | 4.94 | 117,166 |
| Country Superlatives - Top 2 | 0 | - | 4.99 | 70,399 |
| Former Flags | 0 | - | 4.97 | 107,478 |
| Years in History by Picture | 0 | - | 4.44 | 35,443 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,119 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,523 |
| Materials From History #2 | 0 | - | 4.59 | 31,454 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,877 |
| Former Capitals | 0 | - | 4.88 | 71,380 |
| Cold War Decoder | 0 | - | 4.83 | 52,257 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,445 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,386 |
| Events in History #2 | 0 | - | 4.49 | 71,641 |
| Events in History #4 | 0 | - | 4.44 | 44,264 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,034 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,962 |
| Assassinations in History | 0 | - | 4.21 | 66,155 |
| Famous Seconds | 0 | - | 4.22 | 46,548 |
| Ages and Eras | 0 | - | 4.39 | 67,651 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,473 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,764 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,144 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,956 |
| Female Historical Figures | 0 | - | 4.28 | 33,224 |
| Historical Blunders | 0 | - | 4.34 | 91,897 |
| Territorial Accessions | 0 | - | 4.36 | 34,762 |
| People Known as "The Great" | 0 | - | 4.46 | 24,638 |
| This Day in History - July | 0 | - | 4.49 | 36,435 |
| This Day in History - August | 0 | - | 4.42 | 43,337 |
| This Day in History - September | 0 | - | 4.55 | 57,401 |
| This Day in History - October | 0 | - | 4.49 | 37,606 |
| This Day in History - January | 0 | - | 4.50 | 46,678 |
| This Day in History - March | 0 | - | 4.45 | 43,641 |
| Ancient Civilizations | 0 | - | 4.64 | 37,919 |
| Battle to Country | 0 | - | 4.91 | 53,154 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,905 |
| The Places They Went #1 | 0 | - | 4.74 | 33,513 |
| Famous Inventors | 0 | - | 4.44 | 43,522 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,223 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,817 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,463 |
| European History for Dummies | 0 | - | 4.83 | 89,758 |
| History of Scotland | 0 | - | 4.51 | 21,075 |
| Kings of France Quiz | 0 | - | 4.20 | 32,686 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,013,198 |
| Branches of the U.S. Military | 0 | - | 4.39 | 24,329 |
| Countries with the Most Skyscrapers | 0 | - | 4.92 | 143,946 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,513 |
| Countries with the Tallest Buildings | 0 | - | 4.93 | 104,236 |
| Coldest Countries | 0 | - | 4.97 | 138,297 |
| Coldest World Capitals | 0 | - | 4.95 | 133,464 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,497 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,613 |
| Capital Cities with the Least Precipitation | 0 | - | 4.89 | 29,153 |
| World Currency Quiz | 0 | - | 4.91 | 301,954 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,708 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 123,188 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,904 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,100 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,360 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,420 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,278 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,663 |
| Richest Island Countries | 0 | - | 4.84 | 100,306 |
| Cities with the Biggest Economies | 0 | - | 4.90 | 130,697 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,274 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 270,364 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,038 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,356 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,174 |
| Countries with the Most Muslims | 0 | - | 4.95 | 160,154 |
| Buddhist Countries | 0 | - | 4.96 | 143,812 |
| The Sun Quiz | 0 | - | 4.93 | 34,527 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,095,857 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,870 |
