| Territory Changes in World War I | 0 | - | 4.87 | 46,374 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,213 |
| WWII Geography | 0 | - | 4.81 | 119,649 |
| WWII Figures by Picture | 0 | - | 4.85 | 55,648 |
| WWI... or WWII? | 0 | - | 4.85 | 141,165 |
| World War I Quiz | 0 | - | 4.78 | 100,464 |
| WWI A-Z | 0 | - | 4.50 | 38,109 |
| Military History Vocabulary | 0 | - | 4.91 | 66,790 |
| Notable People of WWII | 0 | - | 4.53 | 85,423 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,611 |
| WWII Trivia #1 | 0 | - | 4.36 | 176,960 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,451 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,958 |
| WWII True or False? | 0 | - | 4.56 | 57,195 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,086 |
| WWII Movies by Plot | 0 | - | 4.21 | 27,000 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,573 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,428 |
| WWII Decoder | 0 | - | 4.41 | 53,195 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,890 |
| Name the War | 0 | - | 4.37 | 201,097 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,454 |
| Names for Warriors | 0 | - | 4.40 | 36,845 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,932 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,764 |
| Countries with NO Military | 0 | - | 4.97 | 61,441 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 85,345 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,606 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 15,053 |
| Military History A-Z | 0 | - | 4.20 | 21,082 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,739 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,230 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,222 |
| People Who Died in Battle | 0 | - | 4.35 | 22,288 |
| Top Arms Importing Countries | 0 | - | 4.70 | 64,178 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,178 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,068 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,662 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,905 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,601 |
| WWII for Dummies | 0 | - | 4.80 | 104,199 |
| U.S. Military Acronyms | 0 | - | 4.39 | 100,933 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,270 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,107 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,282 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,599 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,976 |
| Empires by Maps | 0 | - | 4.98 | 119,066 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,760 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,388 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,189 |
| Countries with U.S. Troops | 0 | - | 4.38 | 131,792 |
| Countries With the Largest Air Forces | 0 | - | 4.47 | 51,319 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,890 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,308,653 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,099 |
| Metals of Antiquity | 0 | - | 4.94 | 93,076 |
| Popular Royal Names | 0 | - | 4.27 | 124,646 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,360 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,460 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,213 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 705,326 |
| First Names of Painters | 0 | - | 4.43 | 59,687 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,583 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,799 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,252 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,016 |
| Geography of the British Empire | 0 | - | 4.48 | 39,557 |
| Weapons by Picture | 0 | - | 4.13 | 20,946 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,219 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,135 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,690 |
| Influential Women in History | 0 | - | 4.42 | 35,244 |
| Cradles of Civilization | 0 | - | 4.46 | 39,310 |
| History of The Netherlands | 0 | - | 4.46 | 17,350 |
| Materials From History #1 | 0 | - | 4.56 | 51,281 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,324 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,717 |
| UN Secretaries-General | 0 | - | 4.40 | 7,773 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,567 |
| Recently Independent Countries | 0 | - | 4.98 | 158,254 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 49,773 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,443 |
| Famous Explorers | 0 | - | 4.58 | 36,030 |
| Famous Empires by Description | 0 | - | 4.73 | 118,104 |
| Answers by Time Period | 0 | - | 4.63 | 55,383 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,845 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,822 |
| 17th Century A-Z | 0 | - | 4.78 | 34,218 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,101 |
| French History Multiple Choice | 0 | - | 4.55 | 32,926 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,809 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,033 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,717 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,104 |
| Medieval English History | 0 | - | 4.53 | 43,365 |
| History of Germany | 0 | - | 4.39 | 52,694 |
| Most Important People in History | 0 | - | 3.98 | 50,506 |
| Fictional Military Characters Quiz | 0 | - | 4.27 | 19,581 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,212 |
| Countries with the Least Dense Road Networks | 0 | - | 4.81 | 41,397 |
| Monarchies of the World | 0 | - | 4.94 | 167,180 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 111,992 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,212 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 113,718 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,795 |
| Disney Animated Characters | 0 | - | 4.88 | 599,963 |
| People on Money by Country | 0 | - | 4.83 | 60,105 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,086 |
| Fast Math - Addition | 0 | - | 4.87 | 521,044 |
| NATO Countries | 0 | - | 4.98 | 277,511 |
| EU Countries Quiz | 0 | - | 4.99 | 271,115 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,731 |
| 7 Deadly Sins | 0 | - | 4.88 | 397,043 |
| Books of the Protestant Bible | 0 | - | 4.89 | 208,232 |
| Majority Muslim Countries | 0 | - | 4.98 | 371,177 |
| Astronomy Quiz | 0 | - | 4.90 | 82,012 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,218 |
| Solar System Trivia | 0 | - | 4.93 | 46,256 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.89 | 65,326 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 101,964 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 129,196 |
| Countries with the Most JetPunk Users | 0 | - | 4.99 | 166,230 |
| Most Common JetPunk Answers - Countries | 0 | - | 4.91 | 86,974 |
| Countries By Wikipedia Word Clouds | 0 | - | 4.83 | 39,276 |
| Countries with the Most Major Earthquakes | 0 | - | 4.94 | 116,955 |
| Country Superlatives - Top 2 | 0 | - | 4.99 | 70,323 |
| Former Flags | 0 | - | 4.97 | 107,029 |
| Years in History by Picture | 0 | - | 4.44 | 35,248 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,062 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,312 |
| Materials From History #2 | 0 | - | 4.59 | 31,361 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,698 |
| Former Capitals | 0 | - | 4.88 | 71,234 |
| Cold War Decoder | 0 | - | 4.83 | 52,073 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,336 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,348 |
| Events in History #2 | 0 | - | 4.49 | 71,518 |
| Events in History #4 | 0 | - | 4.44 | 44,169 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,663 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,880 |
| Assassinations in History | 0 | - | 4.21 | 66,060 |
| Famous Seconds | 0 | - | 4.22 | 46,464 |
| Ages and Eras | 0 | - | 4.38 | 67,550 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,431 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,685 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,096 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,884 |
| Female Historical Figures | 0 | - | 4.27 | 33,154 |
| Historical Blunders | 0 | - | 4.34 | 91,787 |
| Territorial Accessions | 0 | - | 4.39 | 34,691 |
| People Known as "The Great" | 0 | - | 4.46 | 24,575 |
| This Day in History - July | 0 | - | 4.49 | 36,401 |
| This Day in History - August | 0 | - | 4.42 | 43,293 |
| This Day in History - September | 0 | - | 4.55 | 57,326 |
| This Day in History - October | 0 | - | 4.49 | 37,578 |
| This Day in History - January | 0 | - | 4.50 | 46,624 |
| This Day in History - March | 0 | - | 4.45 | 43,577 |
| Ancient Civilizations | 0 | - | 4.64 | 37,818 |
| Battle to Country | 0 | - | 4.91 | 52,758 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,800 |
| The Places They Went #1 | 0 | - | 4.74 | 33,463 |
| Famous Inventors | 0 | - | 4.43 | 43,484 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,165 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,619 |
| European History for Dummies | 0 | - | 4.83 | 89,508 |
| History of Scotland | 0 | - | 4.51 | 21,031 |
| Kings of France Quiz | 0 | - | 4.20 | 32,610 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,011,869 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,226 |
| Countries with the Most Skyscrapers | 0 | - | 4.92 | 143,641 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,406 |
| Countries with the Tallest Buildings | 0 | - | 4.93 | 103,990 |
| Coldest Countries | 0 | - | 4.97 | 137,965 |
| Coldest World Capitals | 0 | - | 4.95 | 133,168 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,358 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,465 |
| Capital Cities with the Least Precipitation | 0 | - | 4.89 | 29,077 |
| World Currency Quiz | 0 | - | 4.92 | 299,866 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,647 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,551 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,336 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,568 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,971 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,875 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,741 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,354 |
| Richest Island Countries | 0 | - | 4.84 | 99,847 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,977 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,886 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 267,349 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 103,547 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,972 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,661 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,658 |
| Buddhist Countries | 0 | - | 4.96 | 143,263 |
| The Sun Quiz | 0 | - | 4.93 | 34,274 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,092,922 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,748 |
| Capital Cities by Cartoon Riddles | 0 | - | 4.98 | 86,882 |
