| WWI... or WWII? | 0 | - | 4.85 | 141,400 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,257 |
| WWII Geography | 0 | - | 4.81 | 119,871 |
| WWII Figures by Picture | 0 | - | 4.89 | 63,877 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,464 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 55,127 |
| Military History Vocabulary | 0 | - | 4.91 | 66,862 |
| Notable People of WWII | 0 | - | 4.53 | 85,479 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,706 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,511 |
| WWII Trivia #1 | 0 | - | 4.36 | 177,145 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,675 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,489 |
| WWII Decoder | 0 | - | 4.41 | 53,345 |
| World War I Quiz | 0 | - | 4.78 | 100,559 |
| WWI A-Z | 0 | - | 4.50 | 38,157 |
| WWII Movies by Plot | 0 | - | 4.21 | 27,026 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,166 |
| WWII for Dummies | 0 | - | 4.80 | 104,368 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,914 |
| Name the War | 0 | - | 4.37 | 201,207 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,468 |
| Names for Warriors | 0 | - | 4.40 | 36,860 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 42,753 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,356 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,366 |
| Countries with NO Military | 0 | - | 4.97 | 61,595 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 89,011 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 15,073 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,758 |
| Military History A-Z | 0 | - | 4.20 | 21,094 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,812 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,592 |
| Name that Greek Letter | 0 | - | 4.93 | 322,531 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,539 |
| Name the English Monarchs | 0 | - | 4.92 | 500,099 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,276 |
| The Trojan War | 0 | - | 4.83 | 39,564 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,158 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,067 |
| People Who Died in Battle | 0 | - | 4.35 | 22,292 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,282 |
| Roman Emperors | 0 | - | 4.95 | 119,235 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,827 |
| Top Arms Importing Countries | 0 | - | 4.70 | 64,914 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,386 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,199 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,190 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,748 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,992 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,628 |
| U.S. Military Acronyms | 0 | - | 4.39 | 100,962 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,295 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,127 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,124 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,310 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,661 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,132 |
| Empires by Maps | 0 | - | 4.98 | 119,304 |
| Popular Royal Names | 0 | - | 4.27 | 124,718 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,799 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,256 |
| First Names of Painters | 0 | - | 4.43 | 59,730 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,456 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,710 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,229 |
| Countries with U.S. Troops | 0 | - | 4.38 | 131,864 |
| Countries With the Largest Air Forces | 0 | - | 4.47 | 51,347 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,937 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,310,250 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,759 |
| Metals of Antiquity | 0 | - | 4.94 | 93,135 |
| History of The Netherlands | 0 | - | 4.46 | 17,359 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,423 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,792 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,743 |
| UN Secretaries-General | 0 | - | 4.40 | 7,778 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,577 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 705,769 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,245 |
| Recently Independent Countries | 0 | - | 4.98 | 158,372 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 49,872 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,625 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,787 |
| Roman Names for Places | 0 | - | 4.62 | 58,054 |
| 17th Century A-Z | 0 | - | 4.78 | 34,233 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,145 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,033 |
| 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 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,684 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,468 |
| Most Important People in History | 0 | - | 3.98 | 50,540 |
| Fictional Military Characters Quiz | 0 | - | 4.27 | 19,586 |
| Weapons by Picture | 0 | - | 4.13 | 20,976 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,418 |
| Countries with the Least Dense Road Networks | 0 | - | 4.81 | 41,428 |
| Monarchies of the World | 0 | - | 4.94 | 167,409 |
| 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 | 113,826 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 74,854 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,411 |
| Disney Animated Characters | 0 | - | 4.88 | 600,261 |
| People on Money by Country | 0 | - | 4.83 | 60,156 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,172 |
| Fast Math - Addition | 0 | - | 4.87 | 521,400 |
| NATO Countries | 0 | - | 4.98 | 278,068 |
| EU Countries Quiz | 0 | - | 4.99 | 271,601 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,007 |
| 7 Deadly Sins | 0 | - | 4.88 | 397,662 |
| Books of the Protestant Bible | 0 | - | 4.89 | 208,666 |
| Majority Muslim Countries | 0 | - | 4.98 | 371,828 |
| Astronomy Quiz | 0 | - | 4.90 | 82,114 |
| Largest Objects in the Solar System | 0 | - | 4.99 | 136,409 |
| Solar System Trivia | 0 | - | 4.93 | 46,323 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.91 | 65,383 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,034 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 129,448 |
| Countries with the Most JetPunk Users | 0 | - | 4.99 | 166,524 |
| Most Common JetPunk Answers - Countries | 0 | - | 4.91 | 87,074 |
| Countries By Wikipedia Word Clouds | 0 | - | 4.83 | 39,364 |
| Countries with the Most Major Earthquakes | 0 | - | 4.94 | 117,002 |
| Country Superlatives - Top 2 | 0 | - | 4.99 | 70,341 |
| France True or False? | 0 | - | 4.43 | 39,861 |
| Canada True or False? | 0 | - | 4.57 | 54,736 |
| Russia True or False? | 0 | - | 4.64 | 35,575 |
| New York True or False? | 0 | - | 4.53 | 33,743 |
| Name a Valid Answer - British History | 0 | - | 4.57 | 15,111 |
| Influential Women in History | 0 | - | 4.42 | 35,300 |
| Cradles of Civilization | 0 | - | 4.46 | 39,371 |
| Former Flags | 0 | - | 4.97 | 107,171 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,079 |
| Materials From History #1 | 0 | - | 4.56 | 51,334 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,741 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,380 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,752 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,595 |
| Former Capitals | 0 | - | 4.88 | 71,280 |
| WWII First Names | 0 | - | 4.44 | 41,678 |
| Cold War Decoder | 0 | - | 4.83 | 52,115 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,364 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,765 |
| 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 | 55,420 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,136 |
| The Life of Alexander the Great | 0 | - | 4.49 | 18,454 |
| Battle to Country | 0 | - | 4.91 | 52,904 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,673 |
| European History for Dummies | 0 | - | 4.83 | 89,577 |
| English Royal Consorts | 0 | - | 4.37 | 37,272 |
| British History A-Z #1 | 0 | - | 4.45 | 46,300 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,489 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,340 |
| Animals in British History | 0 | - | 4.44 | 25,933 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,251 |
| 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 | 133,214 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,405 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,506 |
| World Currency Quiz | 0 | - | 4.92 | 300,518 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,940 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,741 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,482 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,718 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,098 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,027 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,821 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,439 |
| Richest Island Countries | 0 | - | 4.84 | 99,970 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 130,100 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,985 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 268,448 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 103,691 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,082 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,817 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,797 |
| Israel True or False? | 0 | - | 3.96 | 16,756 |
| Buddhist Countries | 0 | - | 4.96 | 143,395 |
| The Sun Quiz | 0 | - | 4.93 | 34,337 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,093,794 |
| 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 | 27,908 |
| Countries Hidden in a Letter #1 | 0 | - | 5.00 | 47,973 |
| Countries that Start with A | 0 | - | 4.98 | 2,153,802 |
| Countries that Start with B | 0 | - | 4.95 | 2,286,088 |
| Countries that Start with C | 0 | - | 4.96 | 1,815,312 |
| Countries that Start with D | 0 | - | 4.96 | 704,948 |
| Countries that Start with E | 0 | - | 4.95 | 1,371,633 |
| Countries that Start with G | 0 | - | 4.97 | 1,497,150 |
| Countries that Start with H | 0 | - | 4.96 | 600,802 |
| Countries that Start with I | 0 | - | 4.92 | 1,283,614 |
| Countries that Start with J | 0 | - | 4.98 | 598,807 |
