| Normandy D-Day Beaches | 0 | - | 4.83 | 40,259 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,466 |
| WWII Geography | 0 | - | 4.81 | 119,872 |
| WWII Figures by Picture | 0 | - | 4.89 | 63,896 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,199 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,277 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,192 |
| WWI... or WWII? | 0 | - | 4.85 | 141,403 |
| WWII True or False? | 0 | - | 4.56 | 57,273 |
| NATO Countries | 0 | - | 4.98 | 278,077 |
| EU Countries Quiz | 0 | - | 4.99 | 271,612 |
| Cold War Decoder | 0 | - | 4.83 | 52,116 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,366 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,295 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,127 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,310 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,664 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,799 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,512 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,256 |
| Notable People of WWII | 0 | - | 4.53 | 85,479 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,706 |
| World War I Quiz | 0 | - | 4.78 | 100,559 |
| WWI A-Z | 0 | - | 4.50 | 38,158 |
| Military History Vocabulary | 0 | - | 4.91 | 66,864 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,822 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,744 |
| UN Secretaries-General | 0 | - | 4.40 | 7,778 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,578 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,817 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,168 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,390 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,635 |
| WWII Trivia #1 | 0 | - | 4.36 | 177,147 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,676 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,490 |
| WWII Decoder | 0 | - | 4.41 | 53,345 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 55,128 |
| All OPEC Countries Ever | 0 | - | 4.77 | 87,720 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,748 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,993 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,628 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,914 |
| Name the War | 0 | - | 4.37 | 201,211 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,468 |
| Names for Warriors | 0 | - | 4.40 | 36,861 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,137 |
| Empires by Maps | 0 | - | 4.98 | 119,306 |
| Words for Leaders | 0 | - | 4.77 | 255,996 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,456 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,230 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 15,074 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,310,263 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,124 |
| Metals of Antiquity | 0 | - | 4.94 | 93,137 |
| Popular Royal Names | 0 | - | 4.27 | 124,719 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,425 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,792 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,674 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 705,781 |
| First Names of Painters | 0 | - | 4.43 | 59,731 |
| WWII Movies by Plot | 0 | - | 4.21 | 27,026 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,717 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,034 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,413 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,762 |
| Influential Women in History | 0 | - | 4.42 | 35,301 |
| Cradles of Civilization | 0 | - | 4.46 | 39,373 |
| History of The Netherlands | 0 | - | 4.46 | 17,359 |
| Materials From History #1 | 0 | - | 4.56 | 51,334 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,381 |
| World Leaders by Picture | 0 | - | 4.36 | 264,282 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,279 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,790 |
| Dictators by Picture | 0 | - | 4.18 | 49,001 |
| Recently Independent Countries | 0 | - | 4.98 | 158,374 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 49,874 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,528 |
| Famous Explorers | 0 | - | 4.58 | 36,051 |
| Famous Empires by Description | 0 | - | 4.73 | 118,164 |
| Answers by Time Period | 0 | - | 4.64 | 55,421 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,539 |
| 17th Century A-Z | 0 | - | 4.78 | 34,233 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,049 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,895 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,849 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,110 |
| Most Important People in History | 0 | - | 3.98 | 50,541 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,360 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,377 |
| Countries with NO Military | 0 | - | 4.97 | 61,599 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 89,025 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,428 |
| Countries with the Least Dense Road Networks | 0 | - | 4.81 | 41,428 |
| Monarchies of the World | 0 | - | 4.94 | 167,411 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 112,088 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,307 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 113,828 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,854 |
| Disney Animated Characters | 0 | - | 4.88 | 600,272 |
| People on Money by Country | 0 | - | 4.83 | 60,157 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,173 |
| Fast Math - Addition | 0 | - | 4.87 | 521,401 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,014 |
| 7 Deadly Sins | 0 | - | 4.88 | 397,672 |
| Books of the Protestant Bible | 0 | - | 4.89 | 208,673 |
| Majority Muslim Countries | 0 | - | 4.98 | 371,844 |
| Astronomy Quiz | 0 | - | 4.90 | 82,116 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,415 |
| Solar System Trivia | 0 | - | 4.93 | 46,324 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.91 | 65,385 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,035 |
| Countries with the Most Rail Travel | 0 | - | 4.84 | 37,111 |
| Countries with the Most Rail Travel per Capita | 0 | - | 4.93 | 33,130 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 129,456 |
| Countries with the Most JetPunk Users | 0 | - | 4.99 | 166,525 |
| Most Common JetPunk Answers - Countries | 0 | - | 4.91 | 87,075 |
| Countries By Wikipedia Word Clouds | 0 | - | 4.83 | 39,365 |
| Countries with the Most Major Earthquakes | 0 | - | 4.94 | 117,002 |
| Country Superlatives - Top 2 | 0 | - | 4.99 | 70,341 |
| Former Flags | 0 | - | 4.97 | 107,171 |
| Years in History by Picture | 0 | - | 4.44 | 35,311 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,081 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,420 |
| Materials From History #2 | 0 | - | 4.59 | 31,397 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,741 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,752 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.20 | 48,318 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,597 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,801 |
| Former Capitals | 0 | - | 4.88 | 71,280 |
| WWII for Dummies | 0 | - | 4.80 | 104,373 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,356 |
| Events in History #2 | 0 | - | 4.49 | 71,558 |
| Events in History #4 | 0 | - | 4.44 | 44,198 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,774 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,900 |
| Assassinations in History | 0 | - | 4.21 | 66,087 |
| Famous Seconds | 0 | - | 4.22 | 46,494 |
| Ages and Eras | 0 | - | 4.38 | 67,581 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,445 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,707 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,104 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,905 |
| Female Historical Figures | 0 | - | 4.27 | 33,179 |
| Historical Blunders | 0 | - | 4.34 | 91,810 |
| People Who Died in Battle | 0 | - | 4.35 | 22,292 |
| Territorial Accessions | 0 | - | 4.39 | 34,706 |
| People Known as "The Great" | 0 | - | 4.46 | 24,592 |
| Political Quotes | 0 | - | 4.17 | 19,845 |
| This Day in History - July | 0 | - | 4.49 | 36,413 |
| This Day in History - August | 0 | - | 4.42 | 43,308 |
| This Day in History - September | 0 | - | 4.55 | 57,346 |
| This Day in History - October | 0 | - | 4.49 | 37,582 |
| This Day in History - January | 0 | - | 4.50 | 46,634 |
| This Day in History - March | 0 | - | 4.45 | 43,586 |
| Ancient Civilizations | 0 | - | 4.64 | 37,843 |
| Military History A-Z | 0 | - | 4.20 | 21,094 |
| The Places They Went #1 | 0 | - | 4.74 | 33,477 |
| Famous Inventors | 0 | - | 4.43 | 43,494 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,674 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.91 | 28,387 |
| European History for Dummies | 0 | - | 4.83 | 89,578 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,012,269 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,760 |
| Countries with the Most Skyscrapers | 0 | - | 4.92 | 143,726 |
| U.S. Cities with the Most Skyscrapers | 0 | - | 4.89 | 95,431 |
| Countries with the Tallest Buildings | 0 | - | 4.93 | 104,051 |
| Coldest Countries | 0 | - | 4.97 | 138,072 |
| Coldest World Capitals | 0 | - | 4.95 | 133,215 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,406 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,507 |
| Capital Cities with the Least Precipitation | 0 | - | 4.89 | 29,089 |
| World Currency Quiz | 0 | - | 4.92 | 300,524 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,946 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,743 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,483 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,721 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,102 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,030 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,827 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,442 |
| Richest Island Countries | 0 | - | 4.84 | 99,971 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 130,101 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,987 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 268,469 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 103,695 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,083 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,801 |
| Buddhist Countries | 0 | - | 4.96 | 143,398 |
| The Sun Quiz | 0 | - | 4.93 | 34,337 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,093,808 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,790 |
| Capital Cities by Cartoon Riddles | 0 | - | 4.98 | 86,956 |
| Country Logic Puzzle 4x4 – Sudoku style | 0 | - | 4.99 | 27,909 |
| Countries Hidden in a Letter #1 | 0 | - | 5.00 | 47,974 |
| Countries Hidden in a Letter #2 | 0 | - | 5.00 | 35,862 |
| Countries that Start with A | 0 | - | 4.98 | 2,153,837 |
| Countries that Start with B | 0 | - | 4.95 | 2,286,121 |
| Countries that Start with C | 0 | - | 4.96 | 1,815,336 |
