| Territory Changes in World War I | 0 | - | 4.86 | 46,336 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,193 |
| WWII Geography | 0 | - | 4.81 | 119,534 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,716 |
| WWI... or WWII? | 0 | - | 4.85 | 141,029 |
| World War I Quiz | 0 | - | 4.78 | 100,418 |
| WWI A-Z | 0 | - | 4.50 | 38,086 |
| Military History Vocabulary | 0 | - | 4.91 | 66,755 |
| Notable People of WWII | 0 | - | 4.53 | 85,400 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,558 |
| WWII Trivia #1 | 0 | - | 4.36 | 176,859 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,415 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,881 |
| WWII True or False? | 0 | - | 4.56 | 57,159 |
| Countries That Were Invaded | 0 | - | 4.54 | 97,039 |
| WWII Movies by Plot | 0 | - | 4.21 | 26,984 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,529 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,402 |
| WWII Decoder | 0 | - | 4.41 | 53,119 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,876 |
| Name the War | 0 | - | 4.37 | 201,027 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,448 |
| Names for Warriors | 0 | - | 4.40 | 36,836 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,737 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,455 |
| Countries with NO Military | 0 | - | 4.97 | 61,368 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 85,278 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,538 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 15,042 |
| Military History A-Z | 0 | - | 4.20 | 21,075 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,696 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,172 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,194 |
| People Who Died in Battle | 0 | - | 4.35 | 22,286 |
| Top Arms Importing Countries | 0 | - | 4.67 | 62,776 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,159 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,004 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,626 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,863 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,584 |
| WWII for Dummies | 0 | - | 4.80 | 104,099 |
| U.S. Military Acronyms | 0 | - | 4.39 | 100,915 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,262 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,102 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,268 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,574 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,901 |
| Empires by Maps | 0 | - | 4.98 | 118,950 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,738 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,357 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,169 |
| Countries with U.S. Troops | 0 | - | 4.38 | 131,766 |
| Countries With the Largest Air Forces | 0 | - | 4.47 | 51,304 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,859 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,307,878 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,087 |
| Metals of Antiquity | 0 | - | 4.94 | 93,043 |
| Popular Royal Names | 0 | - | 4.27 | 124,623 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,318 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,400 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,191 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 705,129 |
| First Names of Painters | 0 | - | 4.43 | 59,668 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,567 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,779 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,238 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,978 |
| Geography of the British Empire | 0 | - | 4.48 | 39,542 |
| Weapons by Picture | 0 | - | 4.13 | 20,934 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,124 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,128 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,548 |
| Influential Women in History | 0 | - | 4.42 | 35,224 |
| Cradles of Civilization | 0 | - | 4.46 | 39,274 |
| History of The Netherlands | 0 | - | 4.46 | 17,347 |
| Materials From History #1 | 0 | - | 4.56 | 51,265 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,302 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,701 |
| UN Secretaries-General | 0 | - | 4.40 | 7,771 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,563 |
| Recently Independent Countries | 0 | - | 4.98 | 158,201 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 49,763 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,395 |
| Famous Explorers | 0 | - | 4.58 | 36,014 |
| Famous Empires by Description | 0 | - | 4.73 | 118,066 |
| Answers by Time Period | 0 | - | 4.63 | 55,353 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,829 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,807 |
| 17th Century A-Z | 0 | - | 4.78 | 34,208 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,072 |
| French History Multiple Choice | 0 | - | 4.55 | 32,913 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,782 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 54,999 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,708 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,096 |
| Medieval English History | 0 | - | 4.53 | 43,355 |
| History of Germany | 0 | - | 4.39 | 52,675 |
| Most Important People in History | 0 | - | 3.98 | 50,483 |
| Fictional Military Characters Quiz | 0 | - | 4.27 | 19,575 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,118 |
| Countries with the Least Dense Road Networks | 0 | - | 4.81 | 41,379 |
| Monarchies of the World | 0 | - | 4.94 | 167,069 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 111,931 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,162 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 113,664 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,777 |
| Disney Animated Characters | 0 | - | 4.88 | 599,837 |
| People on Money by Country | 0 | - | 4.83 | 60,084 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,047 |
| Fast Math - Addition | 0 | - | 4.87 | 520,827 |
| NATO Countries | 0 | - | 4.98 | 277,225 |
| EU Countries Quiz | 0 | - | 4.99 | 270,908 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,600 |
| 7 Deadly Sins | 0 | - | 4.88 | 396,735 |
| Books of the Protestant Bible | 0 | - | 4.89 | 208,009 |
| Majority Muslim Countries | 0 | - | 4.98 | 370,870 |
| Astronomy Quiz | 0 | - | 4.90 | 81,965 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,101 |
| Solar System Trivia | 0 | - | 4.93 | 46,217 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.89 | 65,296 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,924 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 129,099 |
| Countries with the Most JetPunk Users | 0 | - | 4.99 | 166,075 |
| Most Common JetPunk Answers - Countries | 0 | - | 4.91 | 86,904 |
| Countries By Wikipedia Word Clouds | 0 | - | 4.84 | 39,235 |
| Countries with the Most Major Earthquakes | 0 | - | 4.94 | 116,925 |
| Country Superlatives - Top 2 | 0 | - | 4.99 | 70,311 |
| Former Flags | 0 | - | 4.97 | 106,960 |
| Years in History by Picture | 0 | - | 4.44 | 35,218 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,044 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,282 |
| Materials From History #2 | 0 | - | 4.59 | 31,355 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,663 |
| Former Capitals | 0 | - | 4.88 | 71,223 |
| Cold War Decoder | 0 | - | 4.83 | 52,046 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,319 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,339 |
| Events in History #2 | 0 | - | 4.49 | 71,502 |
| Events in History #4 | 0 | - | 4.44 | 44,155 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,616 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,873 |
| Assassinations in History | 0 | - | 4.21 | 66,048 |
| Famous Seconds | 0 | - | 4.22 | 46,431 |
| Ages and Eras | 0 | - | 4.38 | 67,540 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,427 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,676 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,083 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,871 |
| Female Historical Figures | 0 | - | 4.27 | 33,147 |
| Historical Blunders | 0 | - | 4.33 | 91,773 |
| Territorial Accessions | 0 | - | 4.39 | 34,680 |
| People Known as "The Great" | 0 | - | 4.46 | 24,571 |
| This Day in History - July | 0 | - | 4.49 | 36,391 |
| This Day in History - August | 0 | - | 4.42 | 43,282 |
| This Day in History - September | 0 | - | 4.55 | 57,312 |
| This Day in History - October | 0 | - | 4.49 | 37,569 |
| This Day in History - January | 0 | - | 4.50 | 46,610 |
| This Day in History - March | 0 | - | 4.45 | 43,567 |
| Ancient Civilizations | 0 | - | 4.63 | 37,805 |
| Battle to Country | 0 | - | 4.91 | 52,684 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,781 |
| The Places They Went #1 | 0 | - | 4.74 | 33,461 |
| Famous Inventors | 0 | - | 4.43 | 43,477 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,151 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,591 |
| European History for Dummies | 0 | - | 4.83 | 89,461 |
| History of Scotland | 0 | - | 4.51 | 21,030 |
| Kings of France Quiz | 0 | - | 4.20 | 32,597 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,011,701 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,214 |
| Countries with the Most Skyscrapers | 0 | - | 4.92 | 143,602 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,387 |
| Countries with the Tallest Buildings | 0 | - | 4.93 | 103,946 |
| Coldest Countries | 0 | - | 4.97 | 137,441 |
| Coldest World Capitals | 0 | - | 4.95 | 133,149 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,330 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,440 |
| Capital Cities with the Least Precipitation | 0 | - | 4.89 | 29,069 |
| World Currency Quiz | 0 | - | 4.92 | 299,588 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,468 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,445 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,251 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,485 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,906 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,777 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,699 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,309 |
| Richest Island Countries | 0 | - | 4.84 | 99,788 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,920 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,827 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 266,394 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 103,480 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,913 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,583 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,582 |
| Buddhist Countries | 0 | - | 4.96 | 143,199 |
| The Sun Quiz | 0 | - | 4.93 | 34,246 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,092,459 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,733 |
| Capital Cities by Cartoon Riddles | 0 | - | 4.98 | 86,844 |
