| Empires A-Z | 0 | - | 4.51 | 45,026 |
| History by Letter - A | 0 | - | 4.51 | 152,570 |
| History by Letter - B | 0 | - | 4.45 | 171,802 |
| History by Letter - C | 0 | - | 4.70 | 170,946 |
| History by Letter - E | 0 | - | 4.51 | 140,298 |
| History by Letter - G | 0 | - | 4.46 | 121,825 |
| History by Letter - H | 0 | - | 4.45 | 136,289 |
| History by Letter - J | 0 | - | 4.51 | 153,735 |
| History by Letter - N | 0 | - | 4.45 | 103,724 |
| History by Letter - S | 0 | - | 4.47 | 94,046 |
| History by Letter - W | 0 | - | 4.45 | 109,103 |
| History by Letter - M | 0 | - | 4.54 | 119,610 |
| History by Letter - K | 0 | - | 4.50 | 101,150 |
| History by Letter - L | 0 | - | 4.50 | 111,865 |
| History by Letter - I | 0 | - | 4.46 | 104,015 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 129,699 |
| Geography by Letter - T | 0 | - | 4.84 | 153,368 |
| People in History A-Z #1 | 0 | - | 4.61 | 98,860 |
| People in History A-Z #2 | 0 | - | 4.47 | 54,982 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,086 |
| History by Letter - D | 0 | - | 4.39 | 137,288 |
| History by Letter - F | 0 | - | 4.18 | 114,013 |
| History by Letter - O | 0 | - | 4.32 | 99,331 |
| History by Letter - P | 0 | - | 4.39 | 107,656 |
| History by Letter - Q | 0 | - | 4.34 | 80,201 |
| History by Letter - R | 0 | - | 4.26 | 121,991 |
| History by Letter - T | 0 | - | 4.39 | 105,127 |
| History by Letter - U | 0 | - | 4.19 | 100,645 |
| History by Letter - V | 0 | - | 4.27 | 80,631 |
| History by Letter - Y | 0 | - | 4.27 | 87,143 |
| History by Letter - Z | 0 | - | 4.19 | 76,922 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,196 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 81,878 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 107,561 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,088 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,607 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,753 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,503 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,043 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 179,830 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,514 |
| 20th Century A-Z | 0 | - | 4.50 | 53,376 |
| 19th Century A-Z | 0 | - | 4.77 | 46,934 |
| 18th Century A-Z | 0 | - | 4.54 | 42,816 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,863 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,231 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,883 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 235,976 |
| Name an Official Language A-Z | 0 | - | 4.91 | 175,479 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,319 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,567 |
| Same Start and End Letter - History #1 | 0 | - | 4.17 | 24,713 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,619 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,090 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,532 |
| 16th Century A-Z | 0 | - | 4.58 | 24,558 |
| 15th Century A-Z | 0 | - | 4.49 | 23,568 |
| 14th Century A-Z | 0 | - | 4.41 | 23,995 |
| 17th Century A-Z | 0 | - | 4.78 | 34,331 |
| NATO Military Alphabet | 0 | - | 4.98 | 557,335 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 800,044 |
| Religion A-Z #2 | 0 | - | 4.41 | 36,934 |
| Geography by Letter - A | 0 | - | 4.74 | 211,173 |
| Geography by Letter - B | 0 | - | 4.56 | 184,235 |
| Geography by Letter - H | 0 | - | 4.69 | 149,998 |
| Geography by Letter - C | 0 | - | 4.47 | 158,355 |
| Geography by Letter - D | 0 | - | 4.50 | 150,201 |
| Geography by Letter - E | 0 | - | 4.42 | 147,304 |
| Geography by Letter - I | 0 | - | 4.42 | 121,751 |
| Geography by Letter - K | 0 | - | 4.53 | 117,868 |
| Geography by Letter - L | 0 | - | 4.43 | 148,218 |
| Geography by Letter - M | 0 | - | 4.49 | 118,366 |
| Geography by Letter - N | 0 | - | 4.51 | 126,788 |
| Geography by Letter - P | 0 | - | 4.47 | 175,730 |
| Geography by Letter - R | 0 | - | 4.43 | 131,116 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 140,240 |
| Geography by Letter - U | 0 | - | 4.53 | 142,735 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 58,077 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,241 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,819 |
| Geography A-Z #5 | 0 | - | 4.47 | 37,288 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,481 |
| Movies that Start with G | 0 | - | 4.49 | 68,429 |
| Movies that Start with I | 0 | - | 4.41 | 65,075 |
| Brand Logos That Start with A | 0 | - | 4.52 | 69,883 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,342 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,749 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,525 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,932 |
| Name the War | 0 | - | 4.37 | 201,297 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,489 |
| Famous Firsts #1 | 0 | - | 4.40 | 68,974 |
| Famous Families #1 | 0 | - | 4.20 | 83,526 |
| Names for Warriors | 0 | - | 4.40 | 36,878 |
| Famous Firsts #2 | 0 | - | 4.01 | 80,965 |
| People in History A-Z #4 | 0 | - | 4.10 | 22,985 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,325 |
| Empires by Maps | 0 | - | 4.98 | 119,643 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,818 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,045 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,649 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,512 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,278 |
| Military History A-Z | 0 | - | 4.20 | 21,111 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,309 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,423 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,648 |
| Countries by Military Spending | 0 | - | 4.93 | 177,116 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,311,680 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,791 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 120,228 |
| Animals that Start with L | 0 | - | 4.47 | 101,728 |
| Animals that Start with P | 0 | - | 4.45 | 85,976 |
| Animals that Start with S | 0 | - | 4.49 | 87,168 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,108 |
| Geography by Letter on the World Map - C | 0 | - | 4.78 | 117,159 |
| World Cities A-Z by Clue #1 | 0 | - | 4.50 | 67,612 |
| Islands A-Z | 0 | - | 4.46 | 117,235 |
| Human Body A-Z | 0 | - | 4.51 | 128,936 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 35,272 |
| Animals A-Z #1 | 0 | - | 4.41 | 93,087 |
| Africa A-Z | 0 | - | 4.57 | 46,527 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.68 | 57,416 |
| Ethnic Groups A-Z | 0 | - | 4.50 | 42,184 |
| Metals of Antiquity | 0 | - | 4.94 | 93,200 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,499 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,287 |
| WWI... or WWII? | 0 | - | 4.85 | 141,611 |
| Oldest Things | 0 | - | 3.92 | 65,635 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,805 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,610 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,096 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,566 |
| Disney A-Z | 0 | - | 4.37 | 86,871 |
| Literature by Letter - A | 0 | - | 4.23 | 31,854 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,115 |
| Companies A-Z | 0 | - | 4.30 | 42,665 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,018 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,574 |
| Geography by Letter - G | 0 | - | 4.35 | 126,017 |
| Geography by Letter - F | 0 | - | 4.27 | 137,596 |
| Geography by Letter - J | 0 | - | 4.34 | 122,668 |
| Geography by Letter - O | 0 | - | 4.37 | 129,490 |
| Geography by Letter - V | 0 | - | 4.39 | 121,465 |
| Geography by Letter - W | 0 | - | 4.39 | 114,634 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,107 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,446 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,275 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,205 |
| Video Games A-Z | 0 | - | 4.08 | 38,858 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,184 |
| Middle East A-Z | 0 | - | 4.47 | 45,938 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,265 |
| Movies that Start with A | 0 | - | 4.13 | 61,796 |
| Movies that Start with C | 0 | - | 4.30 | 61,752 |
| Movies that Start with B | 0 | - | 4.36 | 85,105 |
| Movies that Start with D | 0 | - | 4.34 | 68,362 |
| Movies that Start with E | 0 | - | 4.13 | 68,294 |
| Movies that Start with J | 0 | - | 4.18 | 76,078 |
| Movies that Start with L | 0 | - | 4.16 | 60,349 |
| Movies that Start with M | 0 | - | 4.28 | 48,166 |
| Movies that Start with N | 0 | - | 4.02 | 41,208 |
| Movies that Start with P | 0 | - | 4.25 | 54,099 |
| Movies that Start with R | 0 | - | 4.17 | 46,573 |
| Movies that Start with W | 0 | - | 4.07 | 44,217 |
| Movies that Start with T | 0 | - | 4.34 | 49,231 |
| Movies that Start with S | 0 | - | 4.35 | 56,394 |
| Movies that Start with F | 0 | - | 4.13 | 68,774 |
| Music by Letter - F | 0 | - | 4.48 | 26,939 |
| Music by Letter - A | 0 | - | 4.61 | 31,307 |
| Brand Logos That Start With B | 0 | - | 4.38 | 59,687 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,200 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,406 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,755 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,244 |
| Influential Women in History | 0 | - | 4.42 | 35,394 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,155 |
| Cradles of Civilization | 0 | - | 4.46 | 39,464 |
| Materials From History #1 | 0 | - | 4.56 | 51,393 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,099 |
| Notable People of WWII | 0 | - | 4.53 | 85,526 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,784 |
| World War I Quiz | 0 | - | 4.78 | 101,049 |
| WWI A-Z | 0 | - | 4.50 | 38,214 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,615 |
| Famous Explorers | 0 | - | 4.58 | 36,086 |
| Famous Empires by Description | 0 | - | 4.73 | 118,240 |
| Answers by Time Period | 0 | - | 4.64 | 55,458 |
| Star Wars A-Z | 0 | - | 4.46 | 87,849 |
| Musical Acts by Letter - J | 0 | - | 4.17 | 77,343 |
| Musical Acts by Letter - M | 0 | - | 4.14 | 93,185 |
| Musical Acts by Letter - N | 0 | - | 4.17 | 68,233 |
| Musical Acts by Letter - P | 0 | - | 4.24 | 65,313 |
| Musical Acts by Letter - R | 0 | - | 4.33 | 83,166 |
| Musical Acts by Letter - T | 0 | - | 4.15 | 67,795 |
| Musical Acts by Letter - A | 0 | - | 4.29 | 82,589 |
| Musical Acts by Letter - B | 0 | - | 4.32 | 73,166 |
| Musical Acts by Letter - C | 0 | - | 4.33 | 60,127 |
| Musical Acts by Letter - D | 0 | - | 4.13 | 53,025 |
| Musical Acts by Letter - E | 0 | - | 4.37 | 61,574 |
