| People in History A-Z #2 | 0 | - | 4.47 | 54,817 |
| People in History A-Z #3 | 0 | - | 4.44 | 45,959 |
| Empires A-Z | 0 | - | 4.51 | 44,821 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,802 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,734 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 193,937 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,395 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 190,747 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,387 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 179,382 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,150 |
| Name an Official Language A-Z | 0 | - | 4.91 | 174,765 |
| 20th Century A-Z | 0 | - | 4.50 | 53,167 |
| 19th Century A-Z | 0 | - | 4.77 | 46,739 |
| 18th Century A-Z | 0 | - | 4.54 | 42,649 |
| People in History A-Z #4 | 0 | - | 4.10 | 22,922 |
| History by Letter - A | 0 | - | 4.51 | 152,116 |
| History by Letter - B | 0 | - | 4.45 | 171,264 |
| History by Letter - C | 0 | - | 4.69 | 170,319 |
| History by Letter - E | 0 | - | 4.51 | 139,849 |
| History by Letter - G | 0 | - | 4.45 | 121,449 |
| History by Letter - H | 0 | - | 4.45 | 135,870 |
| History by Letter - J | 0 | - | 4.51 | 153,244 |
| History by Letter - N | 0 | - | 4.44 | 103,389 |
| History by Letter - S | 0 | - | 4.47 | 93,675 |
| History by Letter - W | 0 | - | 4.45 | 108,732 |
| History by Letter - M | 0 | - | 4.54 | 119,100 |
| History by Letter - K | 0 | - | 4.50 | 100,821 |
| History by Letter - L | 0 | - | 4.49 | 111,506 |
| History by Letter - I | 0 | - | 4.46 | 103,685 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,065 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,687 |
| Geography A-Z #5 | 0 | - | 4.47 | 37,188 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,336 |
| 16th Century A-Z | 0 | - | 4.58 | 24,382 |
| 15th Century A-Z | 0 | - | 4.49 | 23,397 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 128,685 |
| Geography by Letter - T | 0 | - | 4.84 | 152,423 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,207 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,333 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,589 |
| World Cities A-Z by Clue #1 | 0 | - | 4.55 | 65,964 |
| Islands A-Z | 0 | - | 4.46 | 116,760 |
| World Cities A-Z by Clue #2 | 0 | - | 4.45 | 57,468 |
| Human Body A-Z | 0 | - | 4.51 | 128,394 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 34,223 |
| Animals A-Z #1 | 0 | - | 4.41 | 92,810 |
| Africa A-Z | 0 | - | 4.57 | 46,371 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.60 | 47,510 |
| Ethnic Groups A-Z | 0 | - | 4.50 | 42,049 |
| History by Letter - D | 0 | - | 4.39 | 136,881 |
| History by Letter - F | 0 | - | 4.18 | 113,689 |
| History by Letter - O | 0 | - | 4.31 | 99,050 |
| History by Letter - P | 0 | - | 4.38 | 107,346 |
| History by Letter - Q | 0 | - | 4.34 | 79,975 |
| History by Letter - R | 0 | - | 4.26 | 121,651 |
| History by Letter - T | 0 | - | 4.39 | 104,873 |
| History by Letter - U | 0 | - | 4.19 | 100,252 |
| History by Letter - V | 0 | - | 4.27 | 80,365 |
| History by Letter - Y | 0 | - | 4.27 | 86,934 |
| History by Letter - Z | 0 | - | 4.18 | 76,743 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,117 |
| Disney A-Z | 0 | - | 4.37 | 86,469 |
| Companies A-Z | 0 | - | 4.30 | 42,610 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,481 |
| Religion A-Z #2 | 0 | - | 4.40 | 36,813 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 81,268 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 106,904 |
| Video Games A-Z | 0 | - | 4.08 | 38,691 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,078 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,149 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,550 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,914 |
| 14th Century A-Z | 0 | - | 4.40 | 23,736 |
| Military History A-Z | 0 | - | 4.20 | 21,039 |
| Double Letters A-Z | 0 | - | 4.51 | 27,069 |
| Animals A-Z #2 | 0 | - | 4.11 | 66,048 |
| Canada A-Z | 0 | - | 4.73 | 32,648 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 234,842 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,107 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,221 |
| Same Start and End Letter - History #1 | 0 | - | 4.16 | 24,665 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,543 |
| A to Z: Musical Terms #2 | 0 | - | 4.05 | 10,955 |
| Geography A-Z #4 | 0 | - | 4.36 | 25,763 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 124,907 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,385 |
| 17th Century A-Z | 0 | - | 4.78 | 34,172 |
| NATO Military Alphabet | 0 | - | 4.98 | 554,193 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 797,870 |
| Geography by Letter - A | 0 | - | 4.74 | 210,105 |
| Geography by Letter - B | 0 | - | 4.56 | 183,263 |
| Geography by Letter - H | 0 | - | 4.69 | 149,285 |
| Geography by Letter - C | 0 | - | 4.47 | 157,562 |
| Geography by Letter - D | 0 | - | 4.50 | 149,497 |
| Geography by Letter - E | 0 | - | 4.42 | 146,648 |
| Geography by Letter - I | 0 | - | 4.42 | 121,205 |
| Geography by Letter - K | 0 | - | 4.53 | 117,329 |
| Geography by Letter - L | 0 | - | 4.43 | 147,618 |
| Geography by Letter - M | 0 | - | 4.49 | 117,631 |
| Geography by Letter - N | 0 | - | 4.51 | 126,234 |
| Geography by Letter - P | 0 | - | 4.47 | 175,147 |
| Geography by Letter - R | 0 | - | 4.43 | 130,332 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 139,607 |
| Geography by Letter - U | 0 | - | 4.54 | 142,064 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 57,981 |
| Movies that Start with G | 0 | - | 4.48 | 68,244 |
| Movies that Start with I | 0 | - | 4.41 | 64,883 |
| Brand Logos That Start with A | 0 | - | 4.51 | 69,256 |
| Brand Logos That Start With B | 0 | - | 4.41 | 59,191 |
| Brand Logos That Start With M | 0 | - | 4.45 | 61,761 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,390 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,329 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,810 |
| Name the War | 0 | - | 4.37 | 200,763 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,408 |
| Famous Firsts #1 | 0 | - | 4.40 | 68,827 |
| Famous Families #1 | 0 | - | 4.20 | 83,397 |
| Names for Warriors | 0 | - | 4.40 | 36,789 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.40 | 30,656 |
| American Football A-Z | 0 | - | 4.26 | 14,475 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 16,992 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,548 |
| Empires by Maps | 0 | - | 4.98 | 118,499 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,470 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,655 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,532 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,227 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,089 |
| Countries by Military Spending | 0 | - | 4.93 | 176,398 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,304,849 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,513 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 119,700 |
| Animals that Start with L | 0 | - | 4.47 | 101,266 |
| Animals that Start with P | 0 | - | 4.45 | 85,648 |
| Animals that Start with S | 0 | - | 4.49 | 86,819 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 89,635 |
| Geography by Letter on the World Map - C | 0 | - | 4.78 | 116,591 |
| Metals of Antiquity | 0 | - | 4.94 | 92,908 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,167 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,180 |
| WWI... or WWII? | 0 | - | 4.85 | 140,636 |
| Oldest Things | 0 | - | 3.92 | 65,592 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,766 |
| Famous Firsts #2 | 0 | - | 4.00 | 80,846 |
| Famous Firsts #3 - The United States | 0 | - | 4.17 | 14,490 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 15,014 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,655 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,804 |
| Literature by Letter - A | 0 | - | 4.23 | 31,761 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,067 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 66,842 |
| Geography by Letter - G | 0 | - | 4.35 | 125,474 |
| Geography by Letter - F | 0 | - | 4.27 | 137,050 |
| Geography by Letter - J | 0 | - | 4.34 | 122,161 |
| Geography by Letter - O | 0 | - | 4.37 | 128,985 |
| Geography by Letter - V | 0 | - | 4.39 | 120,884 |
| Geography by Letter - W | 0 | - | 4.39 | 114,193 |
| Geography by Letter - Y | 0 | - | 4.39 | 110,659 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,029 |
| Geography by Letter - Q | 0 | - | 4.38 | 68,873 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.18 | 35,109 |
| Middle East A-Z | 0 | - | 4.47 | 45,787 |
| South America A-Z | 0 | - | 4.13 | 10,837 |
| Movies that Start with A | 0 | - | 4.13 | 61,635 |
| Movies that Start with C | 0 | - | 4.30 | 61,574 |
| Movies that Start with B | 0 | - | 4.35 | 84,906 |
| Movies that Start with D | 0 | - | 4.34 | 68,218 |
| Movies that Start with E | 0 | - | 4.13 | 68,165 |
| Movies that Start with J | 0 | - | 4.18 | 75,913 |
| Movies that Start with L | 0 | - | 4.16 | 60,220 |
| Movies that Start with M | 0 | - | 4.28 | 48,058 |
| Movies that Start with N | 0 | - | 4.02 | 41,103 |
| Movies that Start with P | 0 | - | 4.25 | 53,998 |
| Movies that Start with R | 0 | - | 4.17 | 46,439 |
| Movies that Start with W | 0 | - | 4.07 | 44,132 |
| Movies that Start with T | 0 | - | 4.33 | 49,109 |
| Movies that Start with S | 0 | - | 4.35 | 56,266 |
| Movies that Start with F | 0 | - | 4.13 | 68,632 |
| Music by Letter - F | 0 | - | 4.48 | 26,828 |
| Music by Letter - A | 0 | - | 4.61 | 31,190 |
| Brand Logos That Start With D | 0 | - | 4.37 | 60,664 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,010 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,183 |
| Brand Logos That Start With S | 0 | - | 4.37 | 56,709 |
| Influential Women in History | 0 | - | 4.42 | 35,000 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,024 |
| Cradles of Civilization | 0 | - | 4.46 | 39,060 |
| Materials From History #1 | 0 | - | 4.56 | 50,603 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,337 |
| Notable People of WWII | 0 | - | 4.53 | 85,319 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,423 |
| World War I Quiz | 0 | - | 4.78 | 100,261 |
| WWI A-Z | 0 | - | 4.50 | 38,026 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,182 |
| Famous Explorers | 0 | - | 4.58 | 35,946 |
| Famous Empires by Description | 0 | - | 4.70 | 117,547 |
| Answers by Time Period | 0 | - | 4.63 | 55,267 |
| Star Wars A-Z | 0 | - | 4.46 | 87,175 |
| Musical Acts by Letter - J | 0 | - | 4.20 | 77,166 |
