| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,175 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,950 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,251 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,093 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,258 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,550 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,723 |
| Words for Leaders | 0 | - | 4.77 | 255,520 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,175 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,687 |
| UN Secretaries-General | 0 | - | 4.40 | 7,771 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,558 |
| Prime Ministers of the UK | 0 | - | 4.96 | 435,431 |
| NATO Countries | 0 | - | 4.98 | 276,946 |
| EU Countries Quiz | 0 | - | 4.99 | 270,692 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,430 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,549 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,149 |
| Military History Vocabulary | 0 | - | 4.91 | 66,733 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,519 |
| Countries that Start with A | 0 | - | 4.98 | 2,149,849 |
| Countries that Start with B | 0 | - | 4.95 | 2,282,495 |
| Countries that Start with C | 0 | - | 4.96 | 1,812,450 |
| Countries that Start with D | 0 | - | 4.96 | 703,023 |
| Countries that Start with E | 0 | - | 4.95 | 1,369,285 |
| Countries that Start with G | 0 | - | 4.97 | 1,494,686 |
| Countries that Start with H | 0 | - | 4.96 | 599,140 |
| Countries that Start with I | 0 | - | 4.92 | 1,281,716 |
| Countries that Start with J | 0 | - | 4.98 | 597,206 |
| Countries that Start with K | 0 | - | 4.97 | 810,500 |
| Countries that Start with L | 0 | - | 4.98 | 1,084,261 |
| Countries that Start with N | 0 | - | 4.93 | 1,111,175 |
| Countries that Start with P | 0 | - | 4.94 | 1,209,865 |
| Countries that Start with S | 0 | - | 4.98 | 1,746,443 |
| Countries that Start with T | 0 | - | 4.90 | 1,005,230 |
| Countries that Start with U | 0 | - | 4.97 | 900,742 |
| Countries that Start with V | 0 | - | 4.98 | 605,845 |
| Countries that Start with F | 0 | - | 4.83 | 613,207 |
| Countries that Start with M | 0 | - | 4.97 | 1,374,872 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,101 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,491 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,476 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,198 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,098 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,684 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.19 | 47,997 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,583 |
| Richest Countries A-Z | 0 | - | 4.92 | 102,100 |
| World Leaders by Picture | 0 | - | 4.36 | 263,779 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,166 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,736 |
| Name the English Monarchs | 0 | - | 4.92 | 498,887 |
| OPEC Countries | 0 | - | 4.74 | 84,850 |
| Dictators by Picture | 0 | - | 4.18 | 48,918 |
| WWII Geography | 0 | - | 4.81 | 119,481 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,651 |
| One Country By Letter By Continent | 0 | - | 5.00 | 122,123 |
| One Capital by Letter by Continent | 0 | - | 4.98 | 17,054 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,199 |
| Name a Country A-Z | 0 | - | 5.00 | 240,983 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 120,409 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,824 |
| Empires by Maps | 0 | - | 4.98 | 118,852 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,024 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,324 |
| Political Quotes | 0 | - | 4.17 | 19,823 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,143 |
| British History A-Z #1 | 0 | - | 4.45 | 46,186 |
| Countries Bordering "U" Countries | 0 | - | 4.83 | 24,170 |
| One Country By Letter By Continent on the Map | 0 | - | 4.99 | 45,992 |
| Metals of Antiquity | 0 | - | 4.94 | 93,015 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,268 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,294 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,884 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,743 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,796 |
| Countries that Start with R | 0 | - | 4.43 | 444,377 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,892 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,552 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,029 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,989 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,859 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,340 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,112 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,944 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,714 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,090 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,454 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,212 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,628 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,125 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,434 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,689 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,772 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,592 |
| Influential Women in History | 0 | - | 4.42 | 35,200 |
| Cradles of Civilization | 0 | - | 4.46 | 39,261 |
| Spanish History A-Z | 0 | - | 4.37 | 19,188 |
| Italian History A-Z | 0 | - | 4.21 | 17,584 |
| Popular Royal Names | 0 | - | 4.27 | 124,586 |
| Russian History A-Z | 0 | - | 4.38 | 31,197 |
| Materials From History #1 | 0 | - | 4.56 | 51,209 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,013 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,334 |
| Countries of the Popes | 0 | - | 4.79 | 127,382 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,938 |
| First Names of Painters | 0 | - | 4.43 | 59,655 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,355 |
| Famous Explorers | 0 | - | 4.58 | 36,009 |
| Famous Empires by Description | 0 | - | 4.73 | 118,030 |
| Answers by Time Period | 0 | - | 4.63 | 55,339 |
| German History A-Z | 0 | - | 4.49 | 24,462 |
| Biggest World Cities A-Z | 0 | - | 4.62 | 221,844 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,327 |
| A-Z Cities by Pictures | 0 | - | 4.56 | 43,594 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,645 |
| History of The Netherlands | 0 | - | 4.46 | 17,339 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,594 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,644 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,532 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,168 |
| Countries with NO Military | 0 | - | 4.97 | 61,316 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,027 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,016 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,447 |
| 7 Deadly Sins | 0 | - | 4.88 | 395,985 |
| Books of the Protestant Bible | 0 | - | 4.89 | 207,787 |
| The Bible A-Z | 0 | - | 4.29 | 59,431 |
| Majority Muslim Countries | 0 | - | 4.98 | 370,349 |
| Colors by Letter | 0 | - | 4.25 | 162,131 |
| Asian Geography By Letter - S | 0 | - | 4.18 | 55,947 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,334 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,764 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,003 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,555 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,588 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,263 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,007 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,355 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 51,750 |
| Asian Geography by Letter - G | 0 | - | 4.35 | 51,039 |
| Asian Geography by Letter - I | 0 | - | 4.36 | 67,564 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 64,552 |
| Asian Geography by Letter - N | 0 | - | 4.33 | 50,055 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,575 |
| Asian Geography By Letter - J | 0 | - | 4.25 | 34,545 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,514 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,874 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,374 |
| Capitals A-Z #2 | 0 | - | 4.45 | 26,664 |
| European Geography A-Z | 0 | - | 4.28 | 49,050 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,238 |
| Former Flags | 0 | - | 4.97 | 106,897 |
| Years in History by Picture | 0 | - | 4.44 | 35,179 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,259 |
| Materials From History #2 | 0 | - | 4.59 | 31,328 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,627 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,679 |
| WWII Decoder | 0 | - | 4.41 | 53,103 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,842 |
| Cold War Decoder | 0 | - | 4.83 | 52,012 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,334 |
| Events in History #2 | 0 | - | 4.49 | 71,483 |
| Events in History #4 | 0 | - | 4.44 | 44,145 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,566 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,859 |
| Assassinations in History | 0 | - | 4.21 | 66,027 |
| Famous Seconds | 0 | - | 4.22 | 46,422 |
| Ages and Eras | 0 | - | 4.38 | 67,526 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,424 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,668 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,074 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,862 |
| Female Historical Figures | 0 | - | 4.27 | 33,142 |
| Historical Blunders | 0 | - | 4.33 | 91,756 |
| Territorial Accessions | 0 | - | 4.38 | 34,672 |
| People Known as "The Great" | 0 | - | 4.46 | 24,565 |
| This Day in History - July | 0 | - | 4.49 | 36,382 |
| This Day in History - August | 0 | - | 4.42 | 43,273 |
| This Day in History - September | 0 | - | 4.55 | 57,294 |
| This Day in History - October | 0 | - | 4.49 | 37,561 |
| This Day in History - January | 0 | - | 4.50 | 46,595 |
| This Day in History - March | 0 | - | 4.45 | 43,557 |
| Ancient Civilizations | 0 | - | 4.63 | 37,793 |
| The Places They Went #1 | 0 | - | 4.74 | 33,458 |
| Famous Inventors | 0 | - | 4.43 | 43,470 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,644 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,374 |
| French History A-Z | 0 | - | 4.22 | 24,026 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,011,513 |
| U.S. States by Governor | 0 | - | 4.43 | 17,995 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,593 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,569 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,458 |
| Coldest World Capitals | 0 | - | 4.95 | 133,122 |
| World Currency Quiz | 0 | - | 4.92 | 299,308 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,292 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,341 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,859 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,264 |
