| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,151 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,910 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,243 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,082 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,241 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,530 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,701 |
| Words for Leaders | 0 | - | 4.77 | 255,405 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,154 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,678 |
| UN Secretaries-General | 0 | - | 4.40 | 7,769 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,555 |
| Prime Ministers of the UK | 0 | - | 4.96 | 435,140 |
| NATO Countries | 0 | - | 4.98 | 276,389 |
| EU Countries Quiz | 0 | - | 4.99 | 270,394 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,395 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,509 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,145 |
| Military History Vocabulary | 0 | - | 4.91 | 66,709 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,470 |
| Countries that Start with A | 0 | - | 4.97 | 2,148,780 |
| Countries that Start with B | 0 | - | 4.95 | 2,281,536 |
| Countries that Start with C | 0 | - | 4.96 | 1,811,712 |
| Countries that Start with D | 0 | - | 4.96 | 702,492 |
| Countries that Start with E | 0 | - | 4.95 | 1,368,642 |
| Countries that Start with G | 0 | - | 4.97 | 1,494,026 |
| Countries that Start with H | 0 | - | 4.96 | 598,724 |
| Countries that Start with I | 0 | - | 4.92 | 1,281,197 |
| Countries that Start with J | 0 | - | 4.98 | 596,778 |
| Countries that Start with K | 0 | - | 4.97 | 810,109 |
| Countries that Start with L | 0 | - | 4.98 | 1,083,782 |
| Countries that Start with N | 0 | - | 4.93 | 1,110,675 |
| Countries that Start with P | 0 | - | 4.94 | 1,209,398 |
| Countries that Start with S | 0 | - | 4.98 | 1,745,776 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,864 |
| Countries that Start with U | 0 | - | 4.97 | 900,468 |
| Countries that Start with V | 0 | - | 4.98 | 605,598 |
| Countries that Start with F | 0 | - | 4.83 | 612,841 |
| Countries that Start with M | 0 | - | 4.97 | 1,374,335 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,073 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,447 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,400 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,166 |
| "Second Best" History Edition | 0 | - | 4.93 | 62,027 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,670 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.19 | 47,897 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,564 |
| Richest Countries A-Z | 0 | - | 4.92 | 102,015 |
| World Leaders by Picture | 0 | - | 4.36 | 263,669 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,135 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,722 |
| Name the English Monarchs | 0 | - | 4.92 | 498,589 |
| OPEC Countries | 0 | - | 4.74 | 84,846 |
| Dictators by Picture | 0 | - | 4.18 | 48,913 |
| WWII Geography | 0 | - | 4.81 | 119,442 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,612 |
| One Country By Letter By Continent | 0 | - | 5.00 | 121,978 |
| One Capital by Letter by Continent | 0 | - | 4.98 | 17,032 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,118 |
| Name a Country A-Z | 0 | - | 5.00 | 240,785 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 120,302 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,749 |
| Empires by Maps | 0 | - | 4.98 | 118,746 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,012 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,308 |
| Political Quotes | 0 | - | 4.17 | 19,817 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,135 |
| British History A-Z #1 | 0 | - | 4.45 | 46,149 |
| Countries Bordering "U" Countries | 0 | - | 4.81 | 24,131 |
| One Country By Letter By Continent on the Map | 0 | - | 4.99 | 45,923 |
| Metals of Antiquity | 0 | - | 4.94 | 92,983 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,242 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,291 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,870 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,709 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,777 |
| Countries that Start with R | 0 | - | 4.43 | 444,111 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,872 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,481 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,967 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,929 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,779 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,286 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,031 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,751 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,686 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,066 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,433 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,195 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,603 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,112 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,385 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,646 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,757 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,511 |
| Influential Women in History | 0 | - | 4.42 | 35,167 |
| Cradles of Civilization | 0 | - | 4.46 | 39,232 |
| Spanish History A-Z | 0 | - | 4.37 | 19,175 |
| Italian History A-Z | 0 | - | 4.21 | 17,565 |
| Popular Royal Names | 0 | - | 4.27 | 124,534 |
| Russian History A-Z | 0 | - | 4.38 | 31,142 |
| Materials From History #1 | 0 | - | 4.56 | 51,121 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,011 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,279 |
| Countries of the Popes | 0 | - | 4.79 | 127,334 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,748 |
| First Names of Painters | 0 | - | 4.43 | 59,628 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,319 |
| Famous Explorers | 0 | - | 4.58 | 35,998 |
| Famous Empires by Description | 0 | - | 4.73 | 118,004 |
| Answers by Time Period | 0 | - | 4.63 | 55,317 |
| German History A-Z | 0 | - | 4.49 | 24,431 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,529 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,292 |
| A-Z Cities by Pictures | 0 | - | 4.56 | 43,577 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,621 |
| History of The Netherlands | 0 | - | 4.46 | 17,332 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,589 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,610 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,323 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,870 |
| Countries with NO Military | 0 | - | 4.97 | 61,263 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,941 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,978 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,255 |
| 7 Deadly Sins | 0 | - | 4.88 | 395,658 |
| Books of the Protestant Bible | 0 | - | 4.89 | 207,627 |
| The Bible A-Z | 0 | - | 4.29 | 59,397 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,977 |
| Colors by Letter | 0 | - | 4.25 | 162,109 |
| Asian Geography By Letter - S | 0 | - | 4.18 | 55,939 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,280 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,716 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,949 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,337 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,543 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,207 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,964 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,332 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 51,735 |
| Asian Geography by Letter - G | 0 | - | 4.35 | 51,024 |
| Asian Geography by Letter - I | 0 | - | 4.36 | 67,547 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 64,532 |
| Asian Geography by Letter - N | 0 | - | 4.33 | 50,043 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,548 |
| Asian Geography By Letter - J | 0 | - | 4.25 | 34,527 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,487 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,815 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,322 |
| Capitals A-Z #2 | 0 | - | 4.45 | 26,658 |
| European Geography A-Z | 0 | - | 4.28 | 49,037 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,222 |
| Former Flags | 0 | - | 4.97 | 106,843 |
| Years in History by Picture | 0 | - | 4.44 | 35,157 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,233 |
| Materials From History #2 | 0 | - | 4.59 | 31,283 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,614 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,670 |
| WWII Decoder | 0 | - | 4.41 | 53,082 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,801 |
| Cold War Decoder | 0 | - | 4.83 | 51,989 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,331 |
| Events in History #2 | 0 | - | 4.49 | 71,463 |
| Events in History #4 | 0 | - | 4.44 | 44,135 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,504 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,847 |
| Assassinations in History | 0 | - | 4.21 | 66,006 |
| Famous Seconds | 0 | - | 4.22 | 46,410 |
| Ages and Eras | 0 | - | 4.38 | 67,505 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,420 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,658 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,065 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,848 |
| Female Historical Figures | 0 | - | 4.27 | 33,127 |
| Historical Blunders | 0 | - | 4.33 | 91,738 |
| Territorial Accessions | 0 | - | 4.38 | 34,668 |
| People Known as "The Great" | 0 | - | 4.46 | 24,553 |
| This Day in History - July | 0 | - | 4.49 | 36,378 |
| This Day in History - August | 0 | - | 4.42 | 43,264 |
| This Day in History - September | 0 | - | 4.55 | 57,286 |
| This Day in History - October | 0 | - | 4.49 | 37,558 |
| This Day in History - January | 0 | - | 4.50 | 46,589 |
| This Day in History - March | 0 | - | 4.45 | 43,553 |
| Ancient Civilizations | 0 | - | 4.63 | 37,784 |
| The Places They Went #1 | 0 | - | 4.74 | 33,454 |
| Famous Inventors | 0 | - | 4.43 | 43,467 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,634 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,352 |
| French History A-Z | 0 | - | 4.22 | 23,771 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,011,317 |
| U.S. States by Governor | 0 | - | 4.43 | 17,992 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,589 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,562 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,406 |
| Coldest World Capitals | 0 | - | 4.95 | 133,094 |
| World Currency Quiz | 0 | - | 4.92 | 299,037 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,144 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,261 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,816 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,228 |
