| History by Letter - A | 0 | - | 4.51 | 154,228 |
| History by Letter - B | 0 | - | 4.45 | 173,578 |
| History by Letter - C | 0 | - | 4.70 | 172,926 |
| History by Letter - E | 0 | - | 4.51 | 141,718 |
| History by Letter - G | 0 | - | 4.46 | 123,265 |
| History by Letter - H | 0 | - | 4.45 | 137,795 |
| History by Letter - J | 0 | - | 4.51 | 155,237 |
| History by Letter - N | 0 | - | 4.45 | 104,947 |
| History by Letter - S | 0 | - | 4.47 | 95,115 |
| History by Letter - W | 0 | - | 4.45 | 110,385 |
| History by Letter - M | 0 | - | 4.54 | 120,858 |
| History by Letter - K | 0 | - | 4.50 | 102,165 |
| History by Letter - L | 0 | - | 4.50 | 112,971 |
| History by Letter - I | 0 | - | 4.46 | 105,184 |
| History by Letter - D | 0 | - | 4.40 | 138,806 |
| History by Letter - F | 0 | - | 4.19 | 115,249 |
| History by Letter - O | 0 | - | 4.32 | 100,411 |
| History by Letter - P | 0 | - | 4.36 | 108,609 |
| History by Letter - Q | 0 | - | 4.34 | 80,905 |
| History by Letter - R | 0 | - | 4.26 | 122,949 |
| History by Letter - T | 0 | - | 4.39 | 105,935 |
| History by Letter - U | 0 | - | 4.19 | 101,448 |
| History by Letter - V | 0 | - | 4.27 | 81,318 |
| History by Letter - Y | 0 | - | 4.27 | 87,826 |
| History by Letter - Z | 0 | - | 4.20 | 77,559 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,378 |
| History Containing the Letter X | 0 | - | 4.47 | 27,178 |
| Empires A-Z | 0 | - | 4.52 | 45,539 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,825 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,818 |
| History Ending in Z | 0 | - | 4.35 | 13,612 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 155,917 |
| Geography by Letter - T | 0 | - | 4.84 | 155,611 |
| People in History A-Z #1 | 0 | - | 4.63 | 99,853 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,564 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,505 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 83,260 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 109,118 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,274 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 197,353 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 171,162 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 194,365 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 302,362 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 181,537 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 73,685 |
| 20th Century A-Z | 0 | - | 4.50 | 54,083 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,596 |
| Countries That Were Invaded | 0 | - | 4.55 | 98,377 |
| 19th Century A-Z | 0 | - | 4.77 | 47,538 |
| 18th Century A-Z | 0 | - | 4.54 | 43,380 |
| 17th Century A-Z | 0 | - | 4.78 | 34,802 |
| People in History A-Z #5 | 0 | - | 4.09 | 32,166 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 239,152 |
| Name an Official Language A-Z | 0 | - | 4.91 | 177,270 |
| "Second Best" History Edition | 0 | - | 4.94 | 64,472 |
| Normandy D-Day Beaches | 0 | - | 4.84 | 40,819 |
| Territory Changes in World War I | 0 | - | 4.88 | 47,412 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,704 |
| People Depicted in Paintings | 0 | - | 4.55 | 44,890 |
| NATO Military Alphabet | 0 | - | 4.98 | 565,613 |
| Religion A-Z #2 | 0 | - | 4.41 | 37,171 |
| Geography by Letter - A | 0 | - | 4.75 | 213,311 |
| Geography by Letter - B | 0 | - | 4.61 | 186,190 |
| Geography by Letter - H | 0 | - | 4.69 | 151,717 |
| Geography by Letter - C | 0 | - | 4.48 | 160,041 |
| Geography by Letter - D | 0 | - | 4.50 | 151,998 |
| Geography by Letter - E | 0 | - | 4.42 | 148,813 |
| Geography by Letter - I | 0 | - | 4.42 | 122,973 |
| Geography by Letter - K | 0 | - | 4.54 | 119,454 |
| Geography by Letter - L | 0 | - | 4.44 | 149,850 |
| Geography by Letter - M | 0 | - | 4.51 | 119,813 |
| Geography by Letter - N | 0 | - | 4.51 | 128,171 |
| Geography by Letter - P | 0 | - | 4.47 | 177,142 |
| Geography by Letter - R | 0 | - | 4.43 | 132,953 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 141,749 |
| Geography by Letter - U | 0 | - | 4.52 | 144,388 |
| Asian Geography By Letter - K | 0 | - | 4.75 | 58,429 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,830 |
| Geography Containing the Letter Q | 0 | - | 4.56 | 43,239 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,623 |
| Geography A-Z #2 | 0 | - | 4.46 | 53,222 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,564 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,897 |
| Movies that Start with G | 0 | - | 4.49 | 68,875 |
| Movies that Start with I | 0 | - | 4.41 | 65,463 |
| Brand Logos That Start with A | 0 | - | 4.52 | 71,427 |
| WWII A-Z #1 | 0 | - | 4.73 | 103,514 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,967 |
| Famous Battles Quiz | 0 | - | 4.21 | 49,193 |
| Name the War | 0 | - | 4.37 | 203,059 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,670 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,483 |
| Famous Families #1 | 0 | - | 4.20 | 83,790 |
| Names for Warriors | 0 | - | 4.40 | 37,102 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,468 |
| 16th Century A-Z | 0 | - | 4.59 | 25,060 |
| 15th Century A-Z | 0 | - | 4.50 | 24,049 |
| 14th Century A-Z | 0 | - | 4.41 | 24,541 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,219 |
| Former Countries by Territory Map | 0 | - | 4.96 | 104,317 |
| Empires by Maps | 0 | - | 4.98 | 122,733 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 120,050 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 106,176 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 49,053 |
| The 7 Wonders of the Ancient World | 0 | - | 4.86 | 82,687 |
| The 13th Century | 0 | - | 4.48 | 43,421 |
| The 11th and 12th Century | 0 | - | 4.53 | 56,300 |
| Military History A-Z | 0 | - | 4.20 | 21,281 |
| Ye Olde Professions | 0 | - | 4.63 | 157,665 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,533 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,602 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,803 |
| Countries by Military Spending | 0 | - | 4.93 | 179,243 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,328,520 |
| Classic Novels by Plot #2 | 0 | - | 4.86 | 38,700 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 121,955 |
| Animals that Start with L | 0 | - | 4.47 | 102,594 |
| Animals that Start with P | 0 | - | 4.45 | 86,596 |
| Animals that Start with S | 0 | - | 4.49 | 87,791 |
| Geography by Letter on the World Map - B | 0 | - | 4.49 | 91,284 |
| Geography by Letter on the World Map - C | 0 | - | 4.77 | 118,786 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 78,390 |
| Islands A-Z | 0 | - | 4.46 | 134,241 |
| World Cities A-Z by Clue #2 | 0 | - | 4.41 | 60,511 |
| Human Body A-Z | 0 | - | 4.51 | 130,208 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 43,119 |
| Africa A-Z | 0 | - | 4.57 | 46,813 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.70 | 58,340 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,588 |
| Metals of Antiquity | 0 | - | 4.95 | 94,071 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,258 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 54,341 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,502 |
| WWI... or WWII? | 0 | - | 4.85 | 143,940 |
| Oldest Things | 0 | - | 3.92 | 65,729 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,880 |
| Famous Firsts #3 - The United States | 0 | - | 4.20 | 14,959 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,269 |
| Years in History #1 - Multiple Choice | 0 | - | 4.82 | 70,745 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,902 |
| Disney A-Z | 0 | - | 4.37 | 87,626 |
| Literature by Letter - A | 0 | - | 4.24 | 32,446 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,449 |
| Companies A-Z | 0 | - | 4.30 | 42,785 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,531 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,782 |
| Geography by Letter - G | 0 | - | 4.33 | 127,285 |
| Geography by Letter - F | 0 | - | 4.28 | 138,990 |
| Geography by Letter - J | 0 | - | 4.35 | 123,854 |
| Geography by Letter - O | 0 | - | 4.37 | 130,686 |
| Geography by Letter - V | 0 | - | 4.39 | 122,843 |
| Geography by Letter - W | 0 | - | 4.39 | 115,667 |
| Geography by Letter - Y | 0 | - | 4.39 | 112,373 |
| Geography by Letter - Z | 0 | - | 4.11 | 82,343 |
| Geography by Letter - Q | 0 | - | 4.38 | 70,251 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,417 |
| Video Games A-Z | 0 | - | 4.05 | 39,311 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,453 |
| Middle East A-Z | 0 | - | 4.47 | 46,286 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.46 | 44,604 |
| Movies that Start with A | 0 | - | 4.13 | 62,184 |
| Movies that Start with C | 0 | - | 4.30 | 62,201 |
| Movies that Start with B | 0 | - | 4.36 | 85,750 |
| Movies that Start with D | 0 | - | 4.34 | 68,706 |
| Movies that Start with E | 0 | - | 4.13 | 68,649 |
| Movies that Start with J | 0 | - | 4.18 | 76,473 |
| Movies that Start with L | 0 | - | 4.16 | 60,645 |
| Movies that Start with M | 0 | - | 4.28 | 48,440 |
| Movies that Start with N | 0 | - | 4.02 | 41,424 |
| Movies that Start with P | 0 | - | 4.25 | 54,322 |
| Movies that Start with R | 0 | - | 4.17 | 46,864 |
| Movies that Start with W | 0 | - | 4.07 | 44,396 |
| Movies that Start with T | 0 | - | 4.34 | 49,495 |
| Movies that Start with S | 0 | - | 4.35 | 56,672 |
| Movies that Start with F | 0 | - | 4.13 | 69,130 |
| Music by Letter - F | 0 | - | 4.47 | 27,167 |
| Music by Letter - A | 0 | - | 4.61 | 31,567 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,847 |
| Brand Logos That Start With D | 0 | - | 4.37 | 62,418 |
| Brand Logos That Start With C | 0 | - | 4.22 | 50,301 |
| Brand Logos That Start With L | 0 | - | 4.40 | 62,112 |
| Brand Logos That Start With M | 0 | - | 4.38 | 63,761 |
| Brand Logos That Start With S | 0 | - | 4.37 | 58,522 |
| Influential Women in History | 0 | - | 4.43 | 36,614 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,425 |
| Cradles of Civilization | 0 | - | 4.46 | 40,574 |
| Materials From History #1 | 0 | - | 4.56 | 52,154 |
| Materials From History #2 | 0 | - | 4.59 | 31,647 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 711,008 |
| Notable People of WWII | 0 | - | 4.53 | 86,666 |
| WWII Trivia #2 | 0 | - | 4.52 | 104,755 |
| World War I Quiz | 0 | - | 4.78 | 102,215 |
| WWI A-Z | 0 | - | 4.51 | 38,687 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 146,793 |
| Famous Explorers | 0 | - | 4.58 | 36,421 |
| Famous Empires by Description | 0 | - | 4.74 | 119,098 |
| Answers by Time Period | 0 | - | 4.64 | 55,957 |
| Coups d'Etat - Name the Country | 0 | - | 4.44 | 42,525 |
| History of France | 0 | - | 4.61 | 57,778 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.41 | 30,817 |
