| Famous Dictators #1 | 0 | - | 4.69 | 199,290 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,306 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,301 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,314 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,142 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,337 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,699 |
| Words for Leaders | 0 | - | 4.77 | 256,415 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,847 |
| Prime Ministers of the UK | 0 | - | 4.95 | 436,999 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,769 |
| UN Secretaries-General | 0 | - | 4.40 | 7,781 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,581 |
| NATO Countries | 0 | - | 4.98 | 278,485 |
| EU Countries Quiz | 0 | - | 4.99 | 272,048 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,672 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,725 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,768 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,222 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.20 | 48,433 |
| Military History Vocabulary | 0 | - | 4.91 | 66,919 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,943 |
| World Leaders by Picture | 0 | - | 4.36 | 264,471 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,325 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,808 |
| Name the English Monarchs | 0 | - | 4.91 | 500,540 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,726 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,537 |
| Dictators by Picture | 0 | - | 4.18 | 49,029 |
| WWII Geography | 0 | - | 4.81 | 119,972 |
| WWII Figures by Picture | 0 | - | 4.89 | 64,531 |
| WWII True or False? | 0 | - | 4.56 | 57,319 |
| All OPEC Countries Ever | 0 | - | 4.74 | 89,678 |
| Political Quotes | 0 | - | 4.17 | 19,857 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,307 |
| Empires by Maps | 0 | - | 4.98 | 119,602 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,305 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,929 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,811 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,669 |
| Countries of the Popes | 0 | - | 4.79 | 127,676 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,503 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,273 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,872 |
| Metals of Antiquity | 0 | - | 4.94 | 93,193 |
| Popular Royal Names | 0 | - | 4.27 | 124,762 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,491 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,900 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,038 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,046 |
| First Names of Painters | 0 | - | 4.43 | 59,759 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,088 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,798 |
| Influential Women in History | 0 | - | 4.42 | 35,387 |
| Cradles of Civilization | 0 | - | 4.46 | 39,453 |
| History of The Netherlands | 0 | - | 4.46 | 17,375 |
| Materials From History #1 | 0 | - | 4.56 | 51,388 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,435 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,668 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,634 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,395 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,734 |
| WWII Decoder | 0 | - | 4.41 | 53,391 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 55,189 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,826 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,600 |
| Famous Explorers | 0 | - | 4.58 | 36,081 |
| Famous Empires by Description | 0 | - | 4.73 | 118,231 |
| Answers by Time Period | 0 | - | 4.64 | 55,455 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,562 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,066 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,905 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,888 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,152 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,705 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,511 |
| U.S. States by Governor | 0 | - | 4.43 | 18,026 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,634 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,619 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,163 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,718 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,853 |
| Countries with NO Military | 0 | - | 4.97 | 61,735 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,628 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,262 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,269 |
| 7 Deadly Sins | 0 | - | 4.88 | 398,166 |
| Books of the Protestant Bible | 0 | - | 4.89 | 208,954 |
| Majority Muslim Countries | 0 | - | 4.98 | 372,306 |
| Ireland True or False? | 0 | - | 4.57 | 49,503 |
| Peru True or False? | 0 | - | 4.58 | 15,224 |
| France True or False? | 0 | - | 4.43 | 39,875 |
| New York True or False? | 0 | - | 4.53 | 33,755 |
| Former Flags | 0 | - | 4.97 | 107,274 |
| Years in History by Picture | 0 | - | 4.44 | 35,371 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,094 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,449 |
| Materials From History #2 | 0 | - | 4.59 | 31,423 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,802 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,291 |
| Pope Facts | 0 | - | 4.39 | 31,149 |
| WWII First Names | 0 | - | 4.44 | 41,699 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,555 |
| WWII for Dummies | 0 | - | 4.79 | 104,509 |
| Cold War Decoder | 0 | - | 4.83 | 52,165 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,369 |
| Events in History #2 | 0 | - | 4.49 | 71,590 |
| Events in History #4 | 0 | - | 4.44 | 44,226 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,849 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,925 |
| Assassinations in History | 0 | - | 4.21 | 66,112 |
| Famous Seconds | 0 | - | 4.22 | 46,512 |
| Ages and Eras | 0 | - | 4.39 | 67,602 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,458 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,733 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,121 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,931 |
| Female Historical Figures | 0 | - | 4.27 | 33,200 |
| Historical Blunders | 0 | - | 4.34 | 91,841 |
| Territorial Accessions | 0 | - | 4.39 | 34,723 |
| People Known as "The Great" | 0 | - | 4.46 | 24,607 |
| This Day in History - July | 0 | - | 4.49 | 36,422 |
| This Day in History - August | 0 | - | 4.42 | 43,321 |
| This Day in History - September | 0 | - | 4.55 | 57,368 |
| This Day in History - October | 0 | - | 4.49 | 37,592 |
| This Day in History - January | 0 | - | 4.50 | 46,650 |
| This Day in History - March | 0 | - | 4.45 | 43,602 |
| Ancient Civilizations | 0 | - | 4.64 | 37,865 |
| Battle to Country | 0 | - | 4.91 | 52,997 |
| The Places They Went #1 | 0 | - | 4.74 | 33,490 |
| The Life of King David | 0 | - | 4.37 | 14,104 |
| Famous Inventors | 0 | - | 4.43 | 43,504 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,720 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,412 |
| European History for Dummies | 0 | - | 4.83 | 89,639 |
| English Royal Consorts | 0 | - | 4.37 | 37,284 |
| British History A-Z #1 | 0 | - | 4.45 | 46,330 |
| Kings of France Quiz | 0 | - | 4.20 | 32,639 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,012,569 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,293 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,682 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,898 |
| Monarchies of Europe | 0 | - | 4.90 | 97,770 |
| Monarchies of Asia | 0 | - | 4.97 | 70,877 |
| Coldest World Capitals | 0 | - | 4.95 | 133,254 |
| Capital Cities with the Least Precipitation | 0 | - | 4.89 | 29,095 |
| World Currency Quiz | 0 | - | 4.92 | 300,982 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,151 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,882 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,591 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,828 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,192 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,147 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,874 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,509 |
| Richest Island Countries | 0 | - | 4.84 | 100,054 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 130,194 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,056 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,952 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 269,143 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 103,793 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,160 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,456 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,212 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,622 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,778 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,673 |
| Orthodox Countries | 0 | - | 4.92 | 131,046 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,903 |
| Buddhist Countries | 0 | - | 4.96 | 143,504 |
| The Sun Quiz | 0 | - | 4.93 | 34,388 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,094,421 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,815 |
| Capital Cities by Cartoon Riddles | 0 | - | 4.98 | 87,014 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,422 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,723 |
| Countries that Start with A | 0 | - | 4.98 | 2,155,483 |
| Countries that Start with B | 0 | - | 4.95 | 2,287,611 |
| Countries that Start with C | 0 | - | 4.96 | 1,816,535 |
| Countries that Start with D | 0 | - | 4.96 | 705,784 |
| Countries that Start with E | 0 | - | 4.95 | 1,372,646 |
| Countries that Start with G | 0 | - | 4.97 | 1,498,168 |
| Countries that Start with H | 0 | - | 4.96 | 601,480 |
| Countries that Start with I | 0 | - | 4.92 | 1,284,374 |
| Countries that Start with J | 0 | - | 4.98 | 599,447 |
| Countries that Start with K | 0 | - | 4.97 | 812,606 |
| Countries that Start with L | 0 | - | 4.98 | 1,086,847 |
| Countries that Start with N | 0 | - | 4.93 | 1,113,871 |
| Countries that Start with P | 0 | - | 4.94 | 1,212,650 |
| Countries that Start with S | 0 | - | 4.98 | 1,750,021 |
| Countries that Start with T | 0 | - | 4.90 | 1,007,203 |
| Countries that Start with U | 0 | - | 4.97 | 902,361 |
| Countries that Start with V | 0 | - | 4.98 | 607,506 |
| Countries that Start with F | 0 | - | 4.83 | 615,081 |
| Countries that Start with M | 0 | - | 4.97 | 1,377,746 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,200 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,659 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,743 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,313 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 336,194 |
