| Empires A-Z | 0 | - | 4.52 | 45,090 |
| History by Letter - A | 0 | - | 4.51 | 152,801 |
| History by Letter - B | 0 | - | 4.45 | 172,033 |
| History by Letter - C | 0 | - | 4.70 | 171,315 |
| History by Letter - E | 0 | - | 4.51 | 140,479 |
| History by Letter - G | 0 | - | 4.46 | 121,996 |
| History by Letter - H | 0 | - | 4.45 | 136,453 |
| History by Letter - J | 0 | - | 4.51 | 153,905 |
| History by Letter - N | 0 | - | 4.45 | 103,998 |
| History by Letter - S | 0 | - | 4.47 | 94,295 |
| History by Letter - W | 0 | - | 4.45 | 109,249 |
| History by Letter - M | 0 | - | 4.54 | 119,755 |
| History by Letter - K | 0 | - | 4.50 | 101,279 |
| History by Letter - L | 0 | - | 4.50 | 112,005 |
| History by Letter - I | 0 | - | 4.46 | 104,134 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 129,961 |
| Geography by Letter - T | 0 | - | 4.84 | 153,664 |
| People in History A-Z #1 | 0 | - | 4.63 | 98,930 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,051 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,144 |
| History by Letter - D | 0 | - | 4.39 | 137,449 |
| History by Letter - F | 0 | - | 4.18 | 114,156 |
| History by Letter - O | 0 | - | 4.32 | 99,442 |
| History by Letter - P | 0 | - | 4.39 | 107,789 |
| History by Letter - Q | 0 | - | 4.34 | 80,280 |
| History by Letter - R | 0 | - | 4.26 | 122,120 |
| History by Letter - T | 0 | - | 4.39 | 105,215 |
| History by Letter - U | 0 | - | 4.19 | 100,735 |
| History by Letter - V | 0 | - | 4.27 | 80,712 |
| History by Letter - Y | 0 | - | 4.27 | 87,226 |
| History by Letter - Z | 0 | - | 4.20 | 76,998 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,218 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 82,036 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 107,741 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,198 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,111 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,879 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,749 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,220 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 180,207 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,599 |
| 20th Century A-Z | 0 | - | 4.50 | 53,633 |
| 19th Century A-Z | 0 | - | 4.77 | 47,214 |
| 18th Century A-Z | 0 | - | 4.54 | 43,097 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,978 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,304 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,919 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 236,293 |
| Name an Official Language A-Z | 0 | - | 4.91 | 175,683 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,361 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,641 |
| Same Start and End Letter - History #1 | 0 | - | 4.17 | 24,727 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,642 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,146 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,579 |
| 16th Century A-Z | 0 | - | 4.58 | 24,843 |
| 15th Century A-Z | 0 | - | 4.49 | 23,884 |
| 14th Century A-Z | 0 | - | 4.41 | 24,316 |
| 17th Century A-Z | 0 | - | 4.78 | 34,585 |
| NATO Military Alphabet | 0 | - | 4.98 | 558,296 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 801,194 |
| Religion A-Z #2 | 0 | - | 4.41 | 36,967 |
| Geography by Letter - A | 0 | - | 4.74 | 211,414 |
| Geography by Letter - B | 0 | - | 4.56 | 184,467 |
| Geography by Letter - H | 0 | - | 4.69 | 150,182 |
| Geography by Letter - C | 0 | - | 4.47 | 158,548 |
| Geography by Letter - D | 0 | - | 4.50 | 150,407 |
| Geography by Letter - E | 0 | - | 4.42 | 147,488 |
| Geography by Letter - I | 0 | - | 4.42 | 121,920 |
| Geography by Letter - K | 0 | - | 4.53 | 118,011 |
| Geography by Letter - L | 0 | - | 4.43 | 148,408 |
| Geography by Letter - M | 0 | - | 4.49 | 118,535 |
| Geography by Letter - N | 0 | - | 4.51 | 126,985 |
| Geography by Letter - P | 0 | - | 4.47 | 175,917 |
| Geography by Letter - R | 0 | - | 4.43 | 131,495 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 140,434 |
| Geography by Letter - U | 0 | - | 4.53 | 142,951 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 58,119 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,280 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,865 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,327 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,534 |
| Movies that Start with G | 0 | - | 4.49 | 68,467 |
| Movies that Start with I | 0 | - | 4.41 | 65,107 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,047 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,526 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,834 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,579 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,954 |
| Name the War | 0 | - | 4.37 | 201,436 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,516 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,005 |
| Famous Families #1 | 0 | - | 4.20 | 83,556 |
| Names for Warriors | 0 | - | 4.40 | 36,897 |
| Famous Firsts #2 | 0 | - | 4.01 | 80,991 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,007 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,511 |
| Empires by Maps | 0 | - | 4.98 | 119,914 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,932 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,141 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,689 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,592 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,321 |
| Military History A-Z | 0 | - | 4.20 | 21,134 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,331 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,448 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,666 |
| Countries by Military Spending | 0 | - | 4.93 | 177,334 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,313,574 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,886 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 120,384 |
| Animals that Start with L | 0 | - | 4.47 | 101,777 |
| Animals that Start with P | 0 | - | 4.45 | 86,012 |
| Animals that Start with S | 0 | - | 4.49 | 87,217 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,246 |
| Geography by Letter on the World Map - C | 0 | - | 4.79 | 117,319 |
| World Cities A-Z by Clue #1 | 0 | - | 4.50 | 67,909 |
| Islands A-Z | 0 | - | 4.46 | 121,580 |
| Human Body A-Z | 0 | - | 4.51 | 129,028 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 35,397 |
| Animals A-Z #1 | 0 | - | 4.41 | 93,162 |
| Africa A-Z | 0 | - | 4.57 | 46,562 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.69 | 57,556 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,223 |
| Metals of Antiquity | 0 | - | 4.94 | 93,287 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,571 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,321 |
| WWI... or WWII? | 0 | - | 4.85 | 141,849 |
| Oldest Things | 0 | - | 3.92 | 65,643 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,811 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,624 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,176 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,808 |
| Disney A-Z | 0 | - | 4.37 | 86,961 |
| Literature by Letter - A | 0 | - | 4.23 | 31,932 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,175 |
| Companies A-Z | 0 | - | 4.30 | 42,682 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,069 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,601 |
| Geography by Letter - G | 0 | - | 4.35 | 126,186 |
| Geography by Letter - F | 0 | - | 4.27 | 137,751 |
| Geography by Letter - J | 0 | - | 4.34 | 122,814 |
| Geography by Letter - O | 0 | - | 4.37 | 129,648 |
| Geography by Letter - V | 0 | - | 4.39 | 121,647 |
| Geography by Letter - W | 0 | - | 4.39 | 114,773 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,424 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,591 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,405 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,227 |
| Video Games A-Z | 0 | - | 4.08 | 38,915 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,211 |
| Middle East A-Z | 0 | - | 4.47 | 45,970 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,304 |
| Movies that Start with A | 0 | - | 4.13 | 61,820 |
| Movies that Start with C | 0 | - | 4.30 | 61,790 |
| Movies that Start with B | 0 | - | 4.36 | 85,145 |
| Movies that Start with D | 0 | - | 4.34 | 68,389 |
| Movies that Start with E | 0 | - | 4.13 | 68,318 |
| Movies that Start with J | 0 | - | 4.18 | 76,103 |
| Movies that Start with L | 0 | - | 4.16 | 60,374 |
| Movies that Start with M | 0 | - | 4.28 | 48,189 |
| Movies that Start with N | 0 | - | 4.02 | 41,224 |
| Movies that Start with P | 0 | - | 4.25 | 54,125 |
| Movies that Start with R | 0 | - | 4.17 | 46,603 |
| Movies that Start with W | 0 | - | 4.07 | 44,238 |
| Movies that Start with T | 0 | - | 4.34 | 49,256 |
| Movies that Start with S | 0 | - | 4.35 | 56,428 |
| Movies that Start with F | 0 | - | 4.13 | 68,802 |
| Music by Letter - F | 0 | - | 4.48 | 26,965 |
| Music by Letter - A | 0 | - | 4.61 | 31,336 |
| Brand Logos That Start With B | 0 | - | 4.38 | 59,805 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,345 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,504 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,908 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,394 |
| Influential Women in History | 0 | - | 4.42 | 35,492 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,188 |
| Cradles of Civilization | 0 | - | 4.46 | 39,544 |
| Materials From History #1 | 0 | - | 4.56 | 51,472 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,562 |
| Notable People of WWII | 0 | - | 4.53 | 85,642 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,852 |
| World War I Quiz | 0 | - | 4.78 | 101,125 |
| WWI A-Z | 0 | - | 4.50 | 38,255 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,719 |
| Famous Explorers | 0 | - | 4.58 | 36,116 |
| Famous Empires by Description | 0 | - | 4.73 | 118,313 |
| Answers by Time Period | 0 | - | 4.63 | 55,508 |
| Star Wars A-Z | 0 | - | 4.46 | 88,021 |
| Musical Acts by Letter - J | 0 | - | 4.17 | 77,400 |
| Musical Acts by Letter - M | 0 | - | 4.14 | 93,275 |
| Musical Acts by Letter - N | 0 | - | 4.17 | 68,280 |
| Musical Acts by Letter - P | 0 | - | 4.24 | 65,367 |
| Musical Acts by Letter - R | 0 | - | 4.33 | 83,218 |
| Musical Acts by Letter - T | 0 | - | 4.15 | 67,868 |
| Musical Acts by Letter - A | 0 | - | 4.29 | 82,664 |
| Musical Acts by Letter - B | 0 | - | 4.32 | 73,232 |
| Musical Acts by Letter - C | 0 | - | 4.33 | 60,188 |
| Musical Acts by Letter - D | 0 | - | 4.13 | 53,067 |
| Musical Acts by Letter - E | 0 | - | 4.37 | 61,632 |
