| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,175 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,943 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,249 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,092 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,254 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,547 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,722 |
| Words for Leaders | 0 | - | 4.77 | 255,494 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,170 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,686 |
| UN Secretaries-General | 0 | - | 4.40 | 7,771 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,557 |
| Prime Ministers of the UK | 0 | - | 4.96 | 435,398 |
| NATO Countries | 0 | - | 4.98 | 276,904 |
| EU Countries Quiz | 0 | - | 4.99 | 270,645 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,419 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,540 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,148 |
| Military History Vocabulary | 0 | - | 4.91 | 66,731 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,509 |
| Countries that Start with A | 0 | - | 4.98 | 2,149,681 |
| Countries that Start with B | 0 | - | 4.95 | 2,282,350 |
| Countries that Start with C | 0 | - | 4.96 | 1,812,346 |
| Countries that Start with D | 0 | - | 4.96 | 702,938 |
| Countries that Start with E | 0 | - | 4.95 | 1,369,192 |
| Countries that Start with G | 0 | - | 4.97 | 1,494,606 |
| Countries that Start with H | 0 | - | 4.96 | 599,074 |
| Countries that Start with I | 0 | - | 4.92 | 1,281,644 |
| Countries that Start with J | 0 | - | 4.98 | 597,141 |
| Countries that Start with K | 0 | - | 4.97 | 810,436 |
| Countries that Start with L | 0 | - | 4.98 | 1,084,188 |
| Countries that Start with N | 0 | - | 4.93 | 1,111,098 |
| Countries that Start with P | 0 | - | 4.94 | 1,209,804 |
| Countries that Start with S | 0 | - | 4.98 | 1,746,353 |
| Countries that Start with T | 0 | - | 4.90 | 1,005,172 |
| Countries that Start with U | 0 | - | 4.97 | 900,697 |
| Countries that Start with V | 0 | - | 4.98 | 605,804 |
| Countries that Start with F | 0 | - | 4.83 | 613,155 |
| Countries that Start with M | 0 | - | 4.97 | 1,374,799 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,100 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,483 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,463 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,195 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,091 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,682 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.19 | 47,986 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,580 |
| Richest Countries A-Z | 0 | - | 4.92 | 102,088 |
| World Leaders by Picture | 0 | - | 4.36 | 263,758 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,163 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,736 |
| Name the English Monarchs | 0 | - | 4.92 | 498,837 |
| OPEC Countries | 0 | - | 4.74 | 84,849 |
| Dictators by Picture | 0 | - | 4.18 | 48,917 |
| WWII Geography | 0 | - | 4.81 | 119,477 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,648 |
| One Country By Letter By Continent | 0 | - | 5.00 | 122,101 |
| One Capital by Letter by Continent | 0 | - | 4.98 | 17,054 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,187 |
| Name a Country A-Z | 0 | - | 5.00 | 240,959 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 120,392 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,814 |
| Empires by Maps | 0 | - | 4.98 | 118,836 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,020 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,320 |
| Political Quotes | 0 | - | 4.17 | 19,823 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,142 |
| British History A-Z #1 | 0 | - | 4.45 | 46,180 |
| Countries Bordering "U" Countries | 0 | - | 4.83 | 24,164 |
| One Country By Letter By Continent on the Map | 0 | - | 4.99 | 45,984 |
| Metals of Antiquity | 0 | - | 4.94 | 93,005 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,261 |
| 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 | 69,735 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,795 |
| Countries that Start with R | 0 | - | 4.43 | 444,334 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,891 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,543 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,022 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,981 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,847 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,332 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,101 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,938 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,708 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,085 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,453 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,211 |
| 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 | 81,425 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,680 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,768 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,580 |
| Influential Women in History | 0 | - | 4.42 | 35,195 |
| Cradles of Civilization | 0 | - | 4.46 | 39,256 |
| Spanish History A-Z | 0 | - | 4.37 | 19,184 |
| Italian History A-Z | 0 | - | 4.21 | 17,582 |
| Popular Royal Names | 0 | - | 4.27 | 124,578 |
| Russian History A-Z | 0 | - | 4.38 | 31,190 |
| Materials From History #1 | 0 | - | 4.56 | 51,202 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,013 |
| Name the Popes Quiz | 0 | - | 4.47 | 137,325 |
| Countries of the Popes | 0 | - | 4.79 | 127,373 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,898 |
| First Names of Painters | 0 | - | 4.43 | 59,653 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,349 |
| Famous Explorers | 0 | - | 4.58 | 36,007 |
| Famous Empires by Description | 0 | - | 4.73 | 118,026 |
| Answers by Time Period | 0 | - | 4.63 | 55,336 |
| German History A-Z | 0 | - | 4.49 | 24,458 |
| Biggest World Cities A-Z | 0 | - | 4.62 | 221,774 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,322 |
| A-Z Cities by Pictures | 0 | - | 4.56 | 43,590 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,639 |
| History of The Netherlands | 0 | - | 4.46 | 17,339 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,593 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,638 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,500 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,115 |
| Countries with NO Military | 0 | - | 4.97 | 61,308 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,012 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,010 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,423 |
| 7 Deadly Sins | 0 | - | 4.88 | 395,929 |
| Books of the Protestant Bible | 0 | - | 4.89 | 207,761 |
| The Bible A-Z | 0 | - | 4.29 | 59,426 |
| Majority Muslim Countries | 0 | - | 4.98 | 370,246 |
| Colors by Letter | 0 | - | 4.25 | 162,128 |
| Asian Geography By Letter - S | 0 | - | 4.18 | 55,946 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,327 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,761 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,994 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,517 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,581 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,255 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,002 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,350 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 51,748 |
| Asian Geography by Letter - G | 0 | - | 4.35 | 51,038 |
| Asian Geography by Letter - I | 0 | - | 4.36 | 67,561 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 64,551 |
| Asian Geography by Letter - N | 0 | - | 4.33 | 50,053 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,571 |
| Asian Geography By Letter - J | 0 | - | 4.25 | 34,543 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,511 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,864 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,365 |
| Capitals A-Z #2 | 0 | - | 4.45 | 26,662 |
| European Geography A-Z | 0 | - | 4.28 | 49,046 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,237 |
| Former Flags | 0 | - | 4.97 | 106,893 |
| Years in History by Picture | 0 | - | 4.44 | 35,176 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,254 |
| Materials From History #2 | 0 | - | 4.59 | 31,322 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,623 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,679 |
| WWII Decoder | 0 | - | 4.41 | 53,100 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,829 |
| Cold War Decoder | 0 | - | 4.83 | 52,003 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,333 |
| Events in History #2 | 0 | - | 4.49 | 71,481 |
| Events in History #4 | 0 | - | 4.44 | 44,145 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,556 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,859 |
| Assassinations in History | 0 | - | 4.21 | 66,024 |
| Famous Seconds | 0 | - | 4.22 | 46,421 |
| Ages and Eras | 0 | - | 4.38 | 67,523 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,424 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,666 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,072 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,859 |
| Female Historical Figures | 0 | - | 4.27 | 33,141 |
| Historical Blunders | 0 | - | 4.33 | 91,753 |
| 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 | 36,381 |
| This Day in History - August | 0 | - | 4.42 | 43,272 |
| This Day in History - September | 0 | - | 4.55 | 57,291 |
| This Day in History - October | 0 | - | 4.49 | 37,561 |
| This Day in History - January | 0 | - | 4.50 | 46,594 |
| This Day in History - March | 0 | - | 4.45 | 43,556 |
| Ancient Civilizations | 0 | - | 4.63 | 37,791 |
| The Places They Went #1 | 0 | - | 4.74 | 33,456 |
| Famous Inventors | 0 | - | 4.43 | 43,470 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,642 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,371 |
| French History A-Z | 0 | - | 4.22 | 23,996 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,011,483 |
| U.S. States by Governor | 0 | - | 4.43 | 17,995 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,592 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,568 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,448 |
| Coldest World Capitals | 0 | - | 4.95 | 133,119 |
| World Currency Quiz | 0 | - | 4.92 | 299,276 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,262 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,323 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,853 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,257 |
