| History by Letter - B | 0 | - | 4.45 | 172,743 |
| History by Letter - C | 0 | - | 4.70 | 172,027 |
| History by Letter - E | 0 | - | 4.51 | 141,037 |
| History by Letter - G | 0 | - | 4.46 | 122,491 |
| History by Letter - H | 0 | - | 4.45 | 137,122 |
| History by Letter - J | 0 | - | 4.51 | 154,496 |
| History by Letter - N | 0 | - | 4.45 | 104,373 |
| History by Letter - S | 0 | - | 4.47 | 94,666 |
| History by Letter - W | 0 | - | 4.45 | 109,855 |
| History by Letter - M | 0 | - | 4.54 | 120,180 |
| History by Letter - K | 0 | - | 4.50 | 101,665 |
| History by Letter - L | 0 | - | 4.50 | 112,433 |
| History by Letter - I | 0 | - | 4.46 | 104,705 |
| History by Letter - D | 0 | - | 4.40 | 138,156 |
| History by Letter - F | 0 | - | 4.18 | 114,757 |
| History by Letter - O | 0 | - | 4.32 | 99,772 |
| History by Letter - P | 0 | - | 4.36 | 108,122 |
| History by Letter - Q | 0 | - | 4.34 | 80,536 |
| History by Letter - R | 0 | - | 4.26 | 122,479 |
| History by Letter - T | 0 | - | 4.39 | 105,532 |
| History by Letter - U | 0 | - | 4.19 | 101,043 |
| History by Letter - V | 0 | - | 4.27 | 80,977 |
| History by Letter - Y | 0 | - | 4.27 | 87,491 |
| History by Letter - Z | 0 | - | 4.20 | 77,242 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,287 |
| History Containing the Letter X | 0 | - | 4.47 | 27,084 |
| History Containing the Letter Z | 0 | - | 4.53 | 23,477 |
| Empires A-Z | 0 | - | 4.52 | 45,271 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,760 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,717 |
| History Ending in Z | 0 | - | 4.35 | 13,553 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 153,943 |
| Geography by Letter - T | 0 | - | 4.84 | 154,383 |
| People in History A-Z #1 | 0 | - | 4.63 | 99,177 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,212 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,258 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 82,516 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 108,305 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,765 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,046 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,532 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,762 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,295 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 180,762 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 73,117 |
| 20th Century A-Z | 0 | - | 4.50 | 53,830 |
| 19th Century A-Z | 0 | - | 4.77 | 47,364 |
| 18th Century A-Z | 0 | - | 4.54 | 43,235 |
| "Second Best" History Edition | 0 | - | 4.94 | 63,483 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,208 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,554 |
| People in History A-Z #5 | 0 | - | 4.09 | 32,004 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 237,681 |
| Name an Official Language A-Z | 0 | - | 4.91 | 176,295 |
| People Depicted in Paintings | 0 | - | 4.55 | 44,711 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,502 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,914 |
| 16th Century A-Z | 0 | - | 4.58 | 24,943 |
| 15th Century A-Z | 0 | - | 4.49 | 23,961 |
| 14th Century A-Z | 0 | - | 4.41 | 24,424 |
| 17th Century A-Z | 0 | - | 4.78 | 34,682 |
| NATO Military Alphabet | 0 | - | 4.98 | 561,428 |
| Religion A-Z #2 | 0 | - | 4.41 | 37,040 |
| Geography by Letter - A | 0 | - | 4.74 | 212,081 |
| Geography by Letter - B | 0 | - | 4.56 | 185,085 |
| Geography by Letter - H | 0 | - | 4.69 | 150,699 |
| Geography by Letter - C | 0 | - | 4.47 | 159,110 |
| Geography by Letter - D | 0 | - | 4.50 | 151,019 |
| Geography by Letter - E | 0 | - | 4.42 | 147,973 |
| Geography by Letter - I | 0 | - | 4.42 | 122,303 |
| Geography by Letter - K | 0 | - | 4.53 | 118,665 |
| Geography by Letter - L | 0 | - | 4.43 | 148,857 |
| Geography by Letter - M | 0 | - | 4.49 | 118,937 |
| Geography by Letter - N | 0 | - | 4.51 | 127,490 |
| Geography by Letter - P | 0 | - | 4.47 | 176,390 |
| Geography by Letter - R | 0 | - | 4.43 | 132,068 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 140,926 |
| Geography by Letter - U | 0 | - | 4.53 | 143,455 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 58,223 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,699 |
| Geography Containing the Letter Q | 0 | - | 4.56 | 43,035 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,409 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,990 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,417 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,673 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,425 |
| Movies that Start with G | 0 | - | 4.49 | 68,625 |
| Movies that Start with I | 0 | - | 4.41 | 65,236 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,649 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,110 |
| Empires by Maps | 0 | - | 4.98 | 120,948 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 53,869 |
| Famous Battles Quiz | 0 | - | 4.21 | 49,036 |
| Name the War | 0 | - | 4.37 | 202,168 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,572 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,117 |
| Famous Families #1 | 0 | - | 4.20 | 83,652 |
| Names for Warriors | 0 | - | 4.40 | 36,975 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,086 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,471 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,072 |
| Countries by Military Spending | 0 | - | 4.93 | 178,362 |
| Classic Novels by Plot #2 | 0 | - | 4.86 | 38,244 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 121,155 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,469 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,537 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,832 |
| WWII A-Z #1 | 0 | - | 4.73 | 103,124 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,745 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,408 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,506 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,715 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,319,684 |
| Animals that Start with L | 0 | - | 4.47 | 102,248 |
| Animals that Start with P | 0 | - | 4.45 | 86,301 |
| Animals that Start with S | 0 | - | 4.49 | 87,505 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,677 |
| Geography by Letter on the World Map - C | 0 | - | 4.77 | 117,945 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 68,428 |
| Islands A-Z | 0 | - | 4.46 | 125,707 |
| World Cities A-Z by Clue #2 | 0 | - | 4.41 | 59,288 |
| Human Body A-Z | 0 | - | 4.51 | 129,374 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 42,206 |
| Animals A-Z #1 | 0 | - | 4.41 | 93,741 |
| Africa A-Z | 0 | - | 4.57 | 46,679 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.70 | 57,954 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,360 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,402 |
| Military History A-Z | 0 | - | 4.20 | 21,192 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,172 |
| Disney A-Z | 0 | - | 4.37 | 87,261 |
| Literature by Letter - A | 0 | - | 4.24 | 32,220 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,332 |
| Companies A-Z | 0 | - | 4.30 | 42,724 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,669 |
| Geography by Letter - G | 0 | - | 4.33 | 126,603 |
| Geography by Letter - F | 0 | - | 4.27 | 138,167 |
| Geography by Letter - J | 0 | - | 4.34 | 123,223 |
| Geography by Letter - O | 0 | - | 4.37 | 130,043 |
| Geography by Letter - V | 0 | - | 4.39 | 122,088 |
| Geography by Letter - W | 0 | - | 4.39 | 115,101 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,810 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,856 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,720 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,308 |
| Geography Containing the Letter Z | 0 | - | 4.49 | 27,904 |
| Video Games A-Z | 0 | - | 4.08 | 39,086 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,316 |
| Movies that Start with A | 0 | - | 4.13 | 61,944 |
| Movies that Start with C | 0 | - | 4.30 | 61,934 |
| Movies that Start with B | 0 | - | 4.36 | 85,316 |
| Movies that Start with D | 0 | - | 4.34 | 68,506 |
| Movies that Start with E | 0 | - | 4.13 | 68,437 |
| Movies that Start with J | 0 | - | 4.18 | 76,250 |
| Movies that Start with L | 0 | - | 4.16 | 60,480 |
| Movies that Start with M | 0 | - | 4.28 | 48,287 |
| Movies that Start with N | 0 | - | 4.02 | 41,300 |
| Movies that Start with P | 0 | - | 4.25 | 54,195 |
| Movies that Start with R | 0 | - | 4.17 | 46,695 |
| Movies that Start with W | 0 | - | 4.07 | 44,291 |
| Movies that Start with T | 0 | - | 4.34 | 49,359 |
| Movies that Start with S | 0 | - | 4.35 | 56,534 |
| Movies that Start with F | 0 | - | 4.13 | 68,928 |
| Music by Letter - F | 0 | - | 4.48 | 27,050 |
| Music by Letter - A | 0 | - | 4.61 | 31,435 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,240 |
| Brand Logos That Start With D | 0 | - | 4.35 | 61,792 |
| Brand Logos That Start With C | 0 | - | 4.20 | 49,846 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,427 |
| Brand Logos That Start With M | 0 | - | 4.40 | 63,091 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,876 |
| Influential Women in History | 0 | - | 4.42 | 36,039 |
| Metals of Antiquity | 0 | - | 4.95 | 93,610 |
| Cradles of Civilization | 0 | - | 4.46 | 40,023 |
| Materials From History #1 | 0 | - | 4.56 | 51,832 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,869 |
| History: What Came First? #1 | 0 | - | 4.87 | 105,498 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 708,527 |
| WWI... or WWII? | 0 | - | 4.85 | 142,609 |
| Oldest Things | 0 | - | 3.92 | 65,672 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,833 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 146,193 |
| Famous Explorers | 0 | - | 4.58 | 36,247 |
| Famous Empires by Description | 0 | - | 4.73 | 118,661 |
| Answers by Time Period | 0 | - | 4.64 | 55,695 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,670 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,400 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,626 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,243 |
| Middle East A-Z | 0 | - | 4.47 | 46,143 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,423 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,290 |
| Notable People of WWII | 0 | - | 4.53 | 86,019 |
| WWII Trivia #2 | 0 | - | 4.52 | 104,303 |
| World War I Quiz | 0 | - | 4.78 | 101,444 |
| WWI A-Z | 0 | - | 4.51 | 38,432 |
| Most Important People in History | 0 | - | 3.98 | 50,797 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.41 | 30,755 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 92,063 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 181,790 |
