| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,095 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,655 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,202 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,033 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,176 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,433 |
| Words for Leaders | 0 | - | 4.77 | 254,946 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,606 |
| Name the English Monarchs | 0 | - | 4.92 | 497,507 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,053 |
| Name a World Capital A-Z | 0 | - | 5.00 | 174,843 |
| Name a Country A-Z | 0 | - | 5.00 | 240,096 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,222 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,632 |
| UN Secretaries-General | 0 | - | 4.40 | 7,756 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,533 |
| NATO Countries | 0 | - | 4.98 | 275,265 |
| EU Countries Quiz | 0 | - | 4.99 | 269,561 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,338 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,972 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,254 |
| British History A-Z #1 | 0 | - | 4.45 | 45,769 |
| Countries that Start with A | 0 | - | 4.98 | 2,145,133 |
| Countries that Start with B | 0 | - | 4.95 | 2,278,408 |
| Countries that Start with C | 0 | - | 4.96 | 1,809,126 |
| Countries that Start with D | 0 | - | 4.96 | 700,736 |
| Countries that Start with E | 0 | - | 4.95 | 1,366,569 |
| Countries that Start with G | 0 | - | 4.97 | 1,491,758 |
| Countries that Start with H | 0 | - | 4.96 | 597,261 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,449 |
| Countries that Start with J | 0 | - | 4.98 | 595,337 |
| Countries that Start with K | 0 | - | 4.96 | 808,780 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,159 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,019 |
| Countries that Start with P | 0 | - | 4.94 | 1,207,844 |
| Countries that Start with S | 0 | - | 4.98 | 1,743,499 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,615 |
| Countries that Start with U | 0 | - | 4.97 | 899,458 |
| Countries that Start with V | 0 | - | 4.98 | 604,673 |
| Countries that Start with F | 0 | - | 4.83 | 611,631 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,512 |
| Political Figures by Last Name #1 | 0 | - | 4.56 | 67,360 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,638 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,103 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.18 | 47,067 |
| Military History Vocabulary | 0 | - | 4.91 | 66,599 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,209 |
| Monarchies of Europe | 0 | - | 4.90 | 97,234 |
| Monarchies of Asia | 0 | - | 4.97 | 70,546 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,937 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,274 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,140 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,051 |
| Country Flags with the Fewest Colours A-Z | 0 | - | 4.63 | 58,522 |
| World Leaders by Picture | 0 | - | 4.36 | 263,213 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,982 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,645 |
| German History A-Z | 0 | - | 4.49 | 24,188 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,491 |
| Richest Countries A-Z | 0 | - | 4.92 | 101,701 |
| Spanish History A-Z | 0 | - | 4.36 | 19,013 |
| Italian History A-Z | 0 | - | 4.21 | 17,358 |
| Russian History A-Z | 0 | - | 4.38 | 30,508 |
| "Second Best" History Edition | 0 | - | 4.93 | 61,644 |
| Dictators by Picture | 0 | - | 4.17 | 48,839 |
| WWII Geography | 0 | - | 4.81 | 119,278 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,434 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,260 |
| OPEC Countries | 0 | - | 4.74 | 84,788 |
| One Country By Letter By Continent | 0 | - | 5.00 | 121,439 |
| One Country By Letter By Continent on the Map | 0 | - | 4.99 | 45,643 |
| One Capital by Letter by Continent | 0 | - | 4.98 | 16,957 |
| European Cities A-Z by Clue #1 | 0 | - | 4.26 | 77,120 |
| Movie Quotes A-Z #1 | 0 | - | 4.30 | 40,795 |
| Name a Valid Country A-Z | 0 | - | 4.97 | 119,931 |
| Political Quotes | 0 | - | 4.17 | 19,799 |
| French History A-Z | 0 | - | 4.17 | 18,616 |
| Countries Bordering "U" Countries | 0 | - | 4.81 | 24,031 |
| London A-Z | 0 | - | 4.10 | 40,626 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,350 |
| Empires by Maps | 0 | - | 4.98 | 118,230 |
| Spouses of World Leaders | 0 | - | 4.18 | 12,282 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,831 |
| Name the Popes Quiz | 0 | - | 4.47 | 136,982 |
| Countries of the Popes | 0 | - | 4.79 | 127,100 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,160 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,044 |
| English Royal Consorts | 0 | - | 4.37 | 37,144 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,591 |
| Kings of France Quiz | 0 | - | 4.20 | 32,540 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,721 |
| Countries that Start with R | 0 | - | 4.43 | 443,228 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,782 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,326 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 110,837 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,773 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,644 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,166 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,795 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,627 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,590 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,994 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,352 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,118 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,528 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,025 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,252 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,558 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,663 |
| U.S. Cities A-Z by Clue | 0 | - | 4.36 | 39,637 |
| Metals of Antiquity | 0 | - | 4.94 | 92,823 |
| Popular Royal Names | 0 | - | 4.27 | 124,440 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,104 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,086 |
| Paramount Leaders of China | 0 | - | 4.36 | 10,989 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,052 |
| First Names of Painters | 0 | - | 4.43 | 59,580 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,616 |
| The Reign of Queen Elizabeth II | 0 | - | 4.35 | 35,661 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,231 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,173 |
| A-Z Cities by Pictures | 0 | - | 4.56 | 43,499 |
| British Geography A-Z | 0 | - | 4.40 | 19,399 |
| Influential Women in History | 0 | - | 4.42 | 34,908 |
| Cradles of Civilization | 0 | - | 4.46 | 38,967 |
| History of The Netherlands | 0 | - | 4.46 | 17,299 |
| Materials From History #1 | 0 | - | 4.56 | 50,525 |
| Political Figures by Last Name #2 | 0 | - | 3.88 | 16,578 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,563 |
| The Dictator Files: Benito Mussolini | 0 | - | 4.65 | 23,295 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,618 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,319 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,287 |
| WWII Decoder | 0 | - | 4.41 | 53,008 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,707 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,493 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,079 |
| Famous Explorers | 0 | - | 4.58 | 35,917 |
| Famous Empires by Description | 0 | - | 4.70 | 117,472 |
| Answers by Time Period | 0 | - | 4.63 | 55,231 |
| U.S. History A-Z #1 | 0 | - | 4.39 | 29,232 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,597 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,424 |
| The Reign of Queen Victoria | 0 | - | 4.33 | 23,329 |
| U.S. States by Governor | 0 | - | 4.43 | 17,976 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,563 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,533 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,598 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,820 |
| Countries with NO Military | 0 | - | 4.97 | 61,092 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,618 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,857 |
| Top Five Countries by Religion | 0 | - | 4.93 | 168,842 |
| 7 Deadly Sins | 0 | - | 4.88 | 394,396 |
| Books of the Protestant Bible | 0 | - | 4.89 | 206,941 |
| The Bible A-Z | 0 | - | 4.29 | 59,177 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,107 |
| Colors by Letter | 0 | - | 4.25 | 161,988 |
| Asian Geography By Letter - S | 0 | - | 4.18 | 55,892 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,159 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,402 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,844 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,221 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,437 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,112 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,890 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,271 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 51,650 |
| Asian Geography by Letter - G | 0 | - | 4.35 | 50,956 |
| Asian Geography by Letter - I | 0 | - | 4.36 | 67,471 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 64,453 |
| Asian Geography by Letter - N | 0 | - | 4.33 | 49,966 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,480 |
| Asian Geography By Letter - J | 0 | - | 4.25 | 34,453 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,394 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,509 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,057 |
| Capitals A-Z #2 | 0 | - | 4.45 | 26,637 |
| California Cities A-Z | 0 | - | 4.06 | 16,974 |
| France A-Z | 0 | - | 4.16 | 38,043 |
| European Geography A-Z | 0 | - | 4.28 | 48,967 |
| Texas A-Z | 0 | - | 4.18 | 16,299 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,150 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,077 |
| Former Flags | 0 | - | 4.97 | 106,553 |
| Years in History by Picture | 0 | - | 4.44 | 35,062 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,152 |
| Materials From History #2 | 0 | - | 4.59 | 30,895 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,491 |
| Pope Facts | 0 | - | 4.39 | 31,019 |
| WWII First Names | 0 | - | 4.45 | 41,539 |
| WWII for Dummies | 0 | - | 4.80 | 103,724 |
| Cold War Decoder | 0 | - | 4.83 | 51,888 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,301 |
| Events in History #2 | 0 | - | 4.49 | 71,387 |
| Events in History #4 | 0 | - | 4.44 | 44,074 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,286 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,789 |
| Assassinations in History | 0 | - | 4.20 | 65,923 |
| Famous Seconds | 0 | - | 4.22 | 46,369 |
