| History by Letter - A | 0 | - | 4.51 | 152,949 |
| History by Letter - B | 0 | - | 4.45 | 172,208 |
| History by Letter - C | 0 | - | 4.70 | 171,490 |
| History by Letter - E | 0 | - | 4.51 | 140,613 |
| History by Letter - G | 0 | - | 4.46 | 122,125 |
| History by Letter - H | 0 | - | 4.45 | 136,625 |
| History by Letter - J | 0 | - | 4.51 | 154,025 |
| History by Letter - N | 0 | - | 4.45 | 104,082 |
| History by Letter - S | 0 | - | 4.47 | 94,379 |
| History by Letter - W | 0 | - | 4.45 | 109,538 |
| History by Letter - M | 0 | - | 4.54 | 119,846 |
| History by Letter - K | 0 | - | 4.50 | 101,368 |
| History by Letter - L | 0 | - | 4.50 | 112,084 |
| History by Letter - I | 0 | - | 4.46 | 104,234 |
| History by Letter - D | 0 | - | 4.40 | 137,762 |
| History by Letter - F | 0 | - | 4.18 | 114,323 |
| History by Letter - O | 0 | - | 4.32 | 99,517 |
| History by Letter - P | 0 | - | 4.39 | 107,867 |
| History by Letter - Q | 0 | - | 4.34 | 80,347 |
| History by Letter - R | 0 | - | 4.26 | 122,210 |
| History by Letter - T | 0 | - | 4.39 | 105,293 |
| History by Letter - U | 0 | - | 4.19 | 100,801 |
| History by Letter - V | 0 | - | 4.27 | 80,771 |
| History by Letter - Y | 0 | - | 4.27 | 87,290 |
| History by Letter - Z | 0 | - | 4.20 | 77,067 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,227 |
| History Containing the Letter X | 0 | - | 4.47 | 27,029 |
| Empires A-Z | 0 | - | 4.52 | 45,116 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,735 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,654 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 130,124 |
| Geography by Letter - T | 0 | - | 4.84 | 153,816 |
| People in History A-Z #1 | 0 | - | 4.63 | 98,970 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,078 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,162 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 82,135 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 107,832 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,275 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,235 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,968 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,874 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,349 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 180,304 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,669 |
| 20th Century A-Z | 0 | - | 4.50 | 53,685 |
| 19th Century A-Z | 0 | - | 4.77 | 47,253 |
| 18th Century A-Z | 0 | - | 4.54 | 43,138 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,012 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,357 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,937 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 236,478 |
| Name an Official Language A-Z | 0 | - | 4.91 | 175,794 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,385 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,683 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,182 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,600 |
| 16th Century A-Z | 0 | - | 4.58 | 24,872 |
| 15th Century A-Z | 0 | - | 4.49 | 23,907 |
| 14th Century A-Z | 0 | - | 4.41 | 24,349 |
| 17th Century A-Z | 0 | - | 4.78 | 34,609 |
| NATO Military Alphabet | 0 | - | 4.98 | 558,888 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 801,641 |
| Religion A-Z #2 | 0 | - | 4.41 | 36,977 |
| Geography by Letter - A | 0 | - | 4.74 | 211,552 |
| Geography by Letter - B | 0 | - | 4.56 | 184,598 |
| Geography by Letter - H | 0 | - | 4.69 | 150,314 |
| Geography by Letter - C | 0 | - | 4.47 | 158,693 |
| Geography by Letter - D | 0 | - | 4.50 | 150,519 |
| Geography by Letter - E | 0 | - | 4.42 | 147,601 |
| Geography by Letter - I | 0 | - | 4.42 | 122,012 |
| Geography by Letter - K | 0 | - | 4.53 | 118,361 |
| Geography by Letter - L | 0 | - | 4.43 | 148,521 |
| Geography by Letter - M | 0 | - | 4.49 | 118,644 |
| Geography by Letter - N | 0 | - | 4.51 | 127,203 |
| Geography by Letter - P | 0 | - | 4.47 | 176,024 |
| Geography by Letter - R | 0 | - | 4.43 | 131,613 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 140,543 |
| Geography by Letter - U | 0 | - | 4.53 | 143,077 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 58,135 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,628 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,296 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,890 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,345 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,561 |
| Movies that Start with G | 0 | - | 4.49 | 68,491 |
| Movies that Start with I | 0 | - | 4.41 | 65,129 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,138 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,637 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,889 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,619 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,966 |
| Name the War | 0 | - | 4.37 | 201,503 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,525 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,024 |
| Famous Families #1 | 0 | - | 4.20 | 83,580 |
| Names for Warriors | 0 | - | 4.40 | 36,910 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,010 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,020 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,637 |
| Empires by Maps | 0 | - | 4.98 | 120,110 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,999 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,203 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,712 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,633 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,341 |
| The 15th Century | 0 | - | 4.43 | 51,205 |
| The 14th Century | 0 | - | 4.55 | 49,296 |
| The 13th Century | 0 | - | 4.48 | 43,263 |
| The 11th and 12th Century | 0 | - | 4.53 | 56,104 |
| Military History A-Z | 0 | - | 4.20 | 21,145 |
| Ye Olde Professions | 0 | - | 4.67 | 156,621 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,340 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,454 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,672 |
| Countries by Military Spending | 0 | - | 4.93 | 177,474 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,314,535 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,957 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 120,505 |
| Animals that Start with L | 0 | - | 4.47 | 101,809 |
| Animals that Start with P | 0 | - | 4.45 | 86,044 |
| Animals that Start with S | 0 | - | 4.49 | 87,247 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,326 |
| Geography by Letter on the World Map - C | 0 | - | 4.79 | 117,406 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 68,004 |
| Islands A-Z | 0 | - | 4.45 | 123,428 |
| Human Body A-Z | 0 | - | 4.51 | 129,088 |
| Asian Cities A-Z by Clue | 0 | - | 4.49 | 35,454 |
| Animals A-Z #1 | 0 | - | 4.41 | 93,523 |
| Africa A-Z | 0 | - | 4.57 | 46,577 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.69 | 57,625 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,248 |
| Metals of Antiquity | 0 | - | 4.95 | 93,350 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,623 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,336 |
| WWI... or WWII? | 0 | - | 4.85 | 141,971 |
| Oldest Things | 0 | - | 3.92 | 65,648 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,814 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,638 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,130 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,214 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,933 |
| Disney A-Z | 0 | - | 4.37 | 87,002 |
| Literature by Letter - A | 0 | - | 4.23 | 32,009 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,216 |
| Companies A-Z | 0 | - | 4.30 | 42,688 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,094 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,617 |
| Geography by Letter - G | 0 | - | 4.33 | 126,294 |
| Geography by Letter - F | 0 | - | 4.27 | 137,831 |
| Geography by Letter - J | 0 | - | 4.34 | 122,912 |
| Geography by Letter - O | 0 | - | 4.37 | 129,741 |
| Geography by Letter - V | 0 | - | 4.39 | 121,740 |
| Geography by Letter - W | 0 | - | 4.39 | 114,846 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,494 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,656 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,477 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,241 |
| Video Games A-Z | 0 | - | 4.08 | 38,946 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,231 |
| Middle East A-Z | 0 | - | 4.47 | 45,982 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,330 |
| Movies that Start with A | 0 | - | 4.13 | 61,840 |
| Movies that Start with C | 0 | - | 4.30 | 61,814 |
| Movies that Start with B | 0 | - | 4.36 | 85,175 |
| Movies that Start with D | 0 | - | 4.34 | 68,410 |
| Movies that Start with E | 0 | - | 4.13 | 68,341 |
| Movies that Start with J | 0 | - | 4.18 | 76,131 |
| Movies that Start with L | 0 | - | 4.16 | 60,393 |
| Movies that Start with M | 0 | - | 4.28 | 48,205 |
| Movies that Start with N | 0 | - | 4.02 | 41,237 |
| Movies that Start with P | 0 | - | 4.25 | 54,137 |
| Movies that Start with R | 0 | - | 4.17 | 46,618 |
| Movies that Start with W | 0 | - | 4.07 | 44,248 |
| Movies that Start with T | 0 | - | 4.34 | 49,272 |
| Movies that Start with S | 0 | - | 4.35 | 56,443 |
| Movies that Start with F | 0 | - | 4.13 | 68,823 |
| Music by Letter - F | 0 | - | 4.48 | 26,981 |
| Music by Letter - A | 0 | - | 4.61 | 31,353 |
| Brand Logos That Start With B | 0 | - | 4.38 | 59,878 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,423 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,575 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,000 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,465 |
| Influential Women in History | 0 | - | 4.42 | 35,521 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,202 |
| Cradles of Civilization | 0 | - | 4.46 | 39,579 |
| Materials From History #1 | 0 | - | 4.56 | 51,493 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,835 |
| Notable People of WWII | 0 | - | 4.53 | 85,862 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,895 |
| World War I Quiz | 0 | - | 4.78 | 101,172 |
| WWI A-Z | 0 | - | 4.50 | 38,287 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,776 |
| Famous Explorers | 0 | - | 4.58 | 36,128 |
| Famous Empires by Description | 0 | - | 4.73 | 118,365 |
| Answers by Time Period | 0 | - | 4.63 | 55,530 |
| History of France | 0 | - | 4.59 | 56,881 |
| Star Wars A-Z | 0 | - | 4.46 | 88,091 |
| Musical Acts by Letter - J | 0 | - | 4.17 | 77,423 |
| Musical Acts by Letter - M | 0 | - | 4.14 | 93,313 |
