| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 85,365 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,272 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,752 |
| WWII First Names | 0 | - | 4.44 | 41,678 |
| Countries in World War II | 0 | - | 4.54 | 908,421 |
| Countries in World War I | 0 | - | 4.88 | 227,420 |
| Words for Leaders | 0 | - | 4.77 | 256,021 |
| Important Cities in WWII | 0 | - | 4.42 | 93,200 |
| WWII for Dummies | 0 | - | 4.80 | 104,377 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,645 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,281 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,677 |
| The Dictator Files: Saddam Hussein | 0 | - | 4.48 | 15,801 |
| World Leaders by Picture | 0 | - | 4.36 | 264,293 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,277 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,197 |
| Dictators by Picture | 0 | - | 4.18 | 49,002 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,296 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,129 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,310 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,664 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,805 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.20 | 48,325 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,712 |
| Cities Bombed During WWII | 0 | - | 4.08 | 30,041 |
| Countries by Percent WWII Deaths | 0 | - | 4.07 | 29,899 |
| Battle to Country | 0 | - | 4.91 | 52,912 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,304 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,920 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,795 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,257 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,147 |
| Name the English Monarchs | 0 | - | 4.92 | 500,126 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,682 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,747 |
| UN Secretaries-General | 0 | - | 4.40 | 7,778 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,578 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,791 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,788 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,631 |
| Name that Greek Letter | 0 | - | 4.93 | 322,549 |
| British History A-Z #1 | 0 | - | 4.45 | 46,302 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,077 |
| WWI... or WWII? | 0 | - | 4.85 | 141,413 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,579 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 42,755 |
| Ancient Greek Words | 0 | - | 4.93 | 111,099 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,828 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,393 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,659 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,200 |
| The Dictator Files: Fidel Castro | 0 | - | 4.19 | 12,283 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,582 |
| Countries of the Popes | 0 | - | 4.79 | 127,607 |
| Communist Countries in History | 0 | - | 4.63 | 493,913 |
| The Vietnam War | 0 | - | 4.43 | 35,410 |
| Political Quotes | 0 | - | 4.17 | 19,846 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,764 |
| German History A-Z | 0 | - | 4.49 | 24,518 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,850 |
| Metals of Antiquity | 0 | - | 4.94 | 93,138 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,145 |
| Empires by Maps | 0 | - | 4.98 | 119,315 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,426 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,798 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,029 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,621 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,378 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 705,796 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,457 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,828 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,232 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,457 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,035 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,386 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,849 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,763 |
| Former Flags | 0 | - | 4.97 | 107,174 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,743 |
| Pope Facts | 0 | - | 4.39 | 31,133 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,678 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,491 |
| WWII Decoder | 0 | - | 4.41 | 53,351 |
| Flags of WW1 | 0 | - | 4.60 | 38,163 |
| Cold War Decoder | 0 | - | 4.83 | 52,119 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,785 |
| The American Civil War | 0 | - | 4.62 | 52,284 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,226 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,307 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,850 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,112 |
| European History for Dummies | 0 | - | 4.83 | 89,582 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,687 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,469 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,492 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,344 |
| NATO Countries | 0 | - | 4.98 | 278,104 |
| EU Countries Quiz | 0 | - | 4.99 | 271,630 |
| U.S. States by Governor | 0 | - | 4.43 | 18,015 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,622 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,262 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,605 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,121 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,301 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,520 |
| Influential Women in History | 0 | - | 4.42 | 35,301 |
| Cradles of Civilization | 0 | - | 4.46 | 39,375 |
| Spanish History A-Z | 0 | - | 4.37 | 19,224 |
| Italian History A-Z | 0 | - | 4.21 | 17,627 |
| Years in History by Picture | 0 | - | 4.44 | 35,312 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,423 |
| Materials From History #1 | 0 | - | 4.56 | 51,335 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,382 |
| Prime Ministers of Israel | 0 | - | 3.97 | 17,874 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,677 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,392 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,422 |
| WWII Geography | 0 | - | 4.81 | 119,874 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,260 |
| WWII Figures by Picture | 0 | - | 4.89 | 63,947 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,469 |
| 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 | 44,199 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,533 |
| Famous Explorers | 0 | - | 4.58 | 36,052 |
| Famous Empires by Description | 0 | - | 4.73 | 118,166 |
| Answers by Time Period | 0 | - | 4.64 | 55,423 |
| This Day in History - July | 0 | - | 4.49 | 36,414 |
| This Day in History - August | 0 | - | 4.42 | 43,308 |
| This Day in History - September | 0 | - | 4.55 | 57,347 |
| This Day in History - October | 0 | - | 4.49 | 37,583 |
| This Day in History - January | 0 | - | 4.50 | 46,634 |
| This Day in History - March | 0 | - | 4.45 | 43,588 |
| Ancient Civilizations | 0 | - | 4.64 | 37,846 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,527 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,018 |
| Roman History by Picture | 0 | - | 4.46 | 26,396 |
| Military History Vocabulary | 0 | - | 4.91 | 66,865 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,317 |
| The Places They Went #1 | 0 | - | 4.74 | 33,478 |
| The Life of King David | 0 | - | 4.37 | 14,096 |
| Famous Inventors | 0 | - | 4.43 | 43,494 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,674 |
| English Royal Consorts | 0 | - | 4.37 | 37,273 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.35 | 61,807 |
| Kings of France Quiz | 0 | - | 4.20 | 32,631 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,012,282 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 336,515 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,829 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,017 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,117 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,491 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,013 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,833 |
| All UK Parliament Constituencies on a Map | 0 | - | 4.60 | 28,646 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,609 |
| Star Wars Quotes | 0 | - | 4.83 | 174,387 |
| Monarchies of Europe | 0 | - | 4.90 | 97,702 |
| Monarchies of Asia | 0 | - | 4.97 | 70,830 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,640 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,494 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,685 |
| Name a Disney/Pixar Movie A-Z | 0 | - | 4.84 | 51,193 |
| Brand Logos Quiz #1 | 0 | - | 4.82 | 2,411,312 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,416 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,938 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,520 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,792 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,080 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,770 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 119,489 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,465 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,895 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,097 |
| Countries Mentioned in the Bible | 0 | - | 4.96 | 66,507 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,649 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,596 |
| Orthodox Countries | 0 | - | 4.92 | 130,933 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,343 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,675 |
| Click a Valid Country A-Z | 0 | - | 4.97 | 525,647 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,477 |
| Click a Valid World Capital A-Z | 0 | - | 4.83 | 89,751 |
| Largest City on Every Continent A-Z | 0 | - | 4.97 | 37,930 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 335,509 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,351 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,119 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,787 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 79,944 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,085 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,479 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,325 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,775 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,052 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,913 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,629 |
| History Multiple Choice #6 | 0 | - | 4.46 | 18,012 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,754 |
| The 7th, 8th, 9th and 10th Century BC | 0 | - | 4.67 | 17,753 |
