| Territory Changes in World War I | 0 | - | 4.87 | 46,447 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,248 |
| WWII Geography | 0 | - | 4.81 | 119,842 |
| WWII Figures by Picture | 0 | - | 4.89 | 63,487 |
| WWI... or WWII? | 0 | - | 4.85 | 141,348 |
| WWI A-Z | 0 | - | 4.50 | 38,147 |
| Military History Vocabulary | 0 | - | 4.91 | 66,847 |
| Notable People of WWII | 0 | - | 4.53 | 85,467 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,691 |
| WWII Trivia #1 | 0 | - | 4.36 | 177,114 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,501 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 55,106 |
| WWII True or False? | 0 | - | 4.56 | 57,257 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,148 |
| WWII Movies by Plot | 0 | - | 4.21 | 27,023 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,658 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,478 |
| WWII Decoder | 0 | - | 4.41 | 53,327 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,913 |
| Name the War | 0 | - | 4.37 | 201,186 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,467 |
| Names for Warriors | 0 | - | 4.40 | 36,858 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,240 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,222 |
| Countries with NO Military | 0 | - | 4.97 | 61,556 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 88,678 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,719 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 15,067 |
| Military History A-Z | 0 | - | 4.20 | 21,092 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,796 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,358 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,273 |
| People Who Died in Battle | 0 | - | 4.35 | 22,291 |
| Top Arms Importing Countries | 0 | - | 4.70 | 64,784 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,197 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,158 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,730 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,975 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,622 |
| WWII for Dummies | 0 | - | 4.80 | 104,332 |
| U.S. Military Acronyms | 0 | - | 4.39 | 100,956 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,291 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,124 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,307 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,645 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,106 |
| Empires by Maps | 0 | - | 4.98 | 119,259 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,787 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,439 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,222 |
| Countries with U.S. Troops | 0 | - | 4.38 | 131,847 |
| Countries With the Largest Air Forces | 0 | - | 4.47 | 51,337 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,931 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,309,880 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,120 |
| Metals of Antiquity | 0 | - | 4.94 | 93,109 |
| Popular Royal Names | 0 | - | 4.27 | 124,699 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,407 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,750 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,247 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 705,655 |
| First Names of Painters | 0 | - | 4.43 | 59,724 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,632 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,005 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,260 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,079 |
| Geography of the British Empire | 0 | - | 4.48 | 39,574 |
| Weapons by Picture | 0 | - | 4.13 | 20,968 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,364 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,149 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,746 |
| Influential Women in History | 0 | - | 4.42 | 35,286 |
| Cradles of Civilization | 0 | - | 4.46 | 39,360 |
| History of The Netherlands | 0 | - | 4.46 | 17,354 |
| Materials From History #1 | 0 | - | 4.56 | 51,320 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,371 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,739 |
| UN Secretaries-General | 0 | - | 4.40 | 7,777 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,574 |
| Recently Independent Countries | 0 | - | 4.98 | 158,344 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 49,811 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,504 |
| Famous Explorers | 0 | - | 4.58 | 36,045 |
| Famous Empires by Description | 0 | - | 4.73 | 118,149 |
| Answers by Time Period | 0 | - | 4.64 | 55,409 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,863 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,833 |
| 17th Century A-Z | 0 | - | 4.78 | 34,232 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,131 |
| French History Multiple Choice | 0 | - | 4.55 | 32,937 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,838 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,093 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,722 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,110 |
| Medieval English History | 0 | - | 4.53 | 43,390 |
| History of Germany | 0 | - | 4.39 | 52,718 |
| Most Important People in History | 0 | - | 3.98 | 50,529 |
| Fictional Military Characters Quiz | 0 | - | 4.27 | 19,585 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,370 |
| Countries with the Least Dense Road Networks | 0 | - | 4.81 | 41,421 |
| Monarchies of the World | 0 | - | 4.94 | 167,352 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 112,061 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,281 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 113,794 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,831 |
| Disney Animated Characters | 0 | - | 4.88 | 600,191 |
| People on Money by Country | 0 | - | 4.83 | 60,145 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,145 |
| Fast Math - Addition | 0 | - | 4.87 | 521,304 |
| NATO Countries | 0 | - | 4.98 | 277,926 |
| EU Countries Quiz | 0 | - | 4.99 | 271,467 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,928 |
| 7 Deadly Sins | 0 | - | 4.88 | 397,534 |
| Books of the Protestant Bible | 0 | - | 4.89 | 208,549 |
| Majority Muslim Countries | 0 | - | 4.98 | 371,659 |
| Astronomy Quiz | 0 | - | 4.90 | 82,093 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,359 |
| Solar System Trivia | 0 | - | 4.93 | 46,310 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.91 | 65,364 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,016 |
| Countries with the Most Rail Travel | 0 | - | 4.84 | 37,095 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 129,331 |
| Countries with the Most JetPunk Users | 0 | - | 4.99 | 166,446 |
| Most Common JetPunk Answers - Countries | 0 | - | 4.91 | 87,048 |
| Countries By Wikipedia Word Clouds | 0 | - | 4.83 | 39,345 |
| Countries with the Most Major Earthquakes | 0 | - | 4.94 | 116,994 |
| Country Superlatives - Top 2 | 0 | - | 4.99 | 70,339 |
| Former Flags | 0 | - | 4.97 | 107,140 |
| Years in History by Picture | 0 | - | 4.44 | 35,295 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,071 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,402 |
| Materials From History #2 | 0 | - | 4.59 | 31,387 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,731 |
| Former Capitals | 0 | - | 4.88 | 71,268 |
| Cold War Decoder | 0 | - | 4.83 | 52,108 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,360 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,354 |
| Events in History #2 | 0 | - | 4.49 | 71,549 |
| Events in History #4 | 0 | - | 4.44 | 44,193 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,727 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,897 |
| Assassinations in History | 0 | - | 4.21 | 66,080 |
| Famous Seconds | 0 | - | 4.22 | 46,488 |
| Ages and Eras | 0 | - | 4.38 | 67,577 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,440 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,699 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,103 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,899 |
| Female Historical Figures | 0 | - | 4.27 | 33,174 |
| Historical Blunders | 0 | - | 4.34 | 91,803 |
| Territorial Accessions | 0 | - | 4.39 | 34,705 |
| People Known as "The Great" | 0 | - | 4.46 | 24,589 |
| This Day in History - July | 0 | - | 4.49 | 36,409 |
| This Day in History - August | 0 | - | 4.42 | 43,303 |
| This Day in History - September | 0 | - | 4.55 | 57,342 |
| This Day in History - October | 0 | - | 4.49 | 37,581 |
| This Day in History - January | 0 | - | 4.50 | 46,632 |
| This Day in History - March | 0 | - | 4.45 | 43,582 |
| Ancient Civilizations | 0 | - | 4.64 | 37,833 |
| Battle to Country | 0 | - | 4.91 | 52,880 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,821 |
| The Places They Went #1 | 0 | - | 4.74 | 33,472 |
| Famous Inventors | 0 | - | 4.43 | 43,494 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,175 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,656 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,381 |
| European History for Dummies | 0 | - | 4.83 | 89,558 |
| History of Scotland | 0 | - | 4.51 | 21,042 |
| Kings of France Quiz | 0 | - | 4.20 | 32,623 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,012,164 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,245 |
| Countries with the Most Skyscrapers | 0 | - | 4.92 | 143,702 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,421 |
| Countries with the Tallest Buildings | 0 | - | 4.93 | 104,035 |
| Coldest Countries | 0 | - | 4.97 | 138,055 |
| Coldest World Capitals | 0 | - | 4.95 | 133,204 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,393 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,498 |
| Capital Cities with the Least Precipitation | 0 | - | 4.89 | 29,085 |
| World Currency Quiz | 0 | - | 4.92 | 300,358 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,872 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,689 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,441 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,688 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,072 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,983 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,804 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,413 |
| Richest Island Countries | 0 | - | 4.84 | 99,940 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 130,067 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,948 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 268,199 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 103,652 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,058 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,792 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,758 |
| Buddhist Countries | 0 | - | 4.96 | 143,352 |
| The Sun Quiz | 0 | - | 4.93 | 34,326 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,093,600 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,774 |
