| People in History A-Z #2 | 0 | - | 4.47 | 54,868 |
| People in History A-Z #3 | 0 | - | 4.44 | 45,989 |
| Empires A-Z | 0 | - | 4.51 | 44,877 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,823 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,835 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,150 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,502 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 190,969 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,572 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 179,489 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,257 |
| Name an Official Language A-Z | 0 | - | 4.91 | 174,945 |
| 20th Century A-Z | 0 | - | 4.50 | 53,209 |
| 19th Century A-Z | 0 | - | 4.77 | 46,770 |
| 18th Century A-Z | 0 | - | 4.54 | 42,670 |
| People in History A-Z #4 | 0 | - | 4.10 | 22,938 |
| History by Letter - A | 0 | - | 4.51 | 152,229 |
| History by Letter - B | 0 | - | 4.45 | 171,389 |
| History by Letter - C | 0 | - | 4.70 | 170,467 |
| History by Letter - E | 0 | - | 4.51 | 139,960 |
| History by Letter - G | 0 | - | 4.45 | 121,543 |
| History by Letter - H | 0 | - | 4.45 | 135,978 |
| History by Letter - J | 0 | - | 4.51 | 153,347 |
| History by Letter - N | 0 | - | 4.44 | 103,472 |
| History by Letter - S | 0 | - | 4.47 | 93,754 |
| History by Letter - W | 0 | - | 4.45 | 108,839 |
| History by Letter - M | 0 | - | 4.54 | 119,184 |
| History by Letter - K | 0 | - | 4.50 | 100,894 |
| History by Letter - L | 0 | - | 4.49 | 111,582 |
| History by Letter - I | 0 | - | 4.46 | 103,763 |
| Religion A-Z #2 | 0 | - | 4.41 | 36,841 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,119 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,719 |
| Geography A-Z #5 | 0 | - | 4.47 | 37,209 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,372 |
| 16th Century A-Z | 0 | - | 4.58 | 24,409 |
| 15th Century A-Z | 0 | - | 4.49 | 23,413 |
| 14th Century A-Z | 0 | - | 4.41 | 23,797 |
| Countries that Start with a Vowel | 0 | - | 4.98 | 128,918 |
| Geography by Letter - T | 0 | - | 4.84 | 152,643 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,235 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,356 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,607 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 66,599 |
| Islands A-Z | 0 | - | 4.46 | 116,880 |
| World Cities A-Z by Clue #2 | 0 | - | 4.41 | 58,014 |
| Human Body A-Z | 0 | - | 4.51 | 128,623 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 34,656 |
| Animals A-Z #1 | 0 | - | 4.41 | 92,877 |
| Africa A-Z | 0 | - | 4.57 | 46,407 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.64 | 53,780 |
| Ethnic Groups A-Z | 0 | - | 4.50 | 42,075 |
| History by Letter - D | 0 | - | 4.39 | 136,978 |
| History by Letter - F | 0 | - | 4.18 | 113,765 |
| History by Letter - O | 0 | - | 4.31 | 99,123 |
| History by Letter - P | 0 | - | 4.39 | 107,418 |
| History by Letter - Q | 0 | - | 4.34 | 80,023 |
| History by Letter - R | 0 | - | 4.26 | 121,742 |
| History by Letter - T | 0 | - | 4.39 | 104,942 |
| History by Letter - U | 0 | - | 4.19 | 100,433 |
| History by Letter - V | 0 | - | 4.27 | 80,430 |
| History by Letter - Y | 0 | - | 4.27 | 86,987 |
| History by Letter - Z | 0 | - | 4.18 | 76,782 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,129 |
| Disney A-Z | 0 | - | 4.37 | 86,627 |
| Companies A-Z | 0 | - | 4.30 | 42,623 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,505 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 81,387 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 107,052 |
| Video Games A-Z | 0 | - | 4.08 | 38,735 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,097 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,184 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,623 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,976 |
| Military History A-Z | 0 | - | 4.20 | 21,056 |
| Double Letters A-Z | 0 | - | 4.51 | 27,088 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,090 |
| Canada A-Z | 0 | - | 4.73 | 32,675 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 235,191 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,153 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,275 |
| Same Start and End Letter - History #1 | 0 | - | 4.17 | 24,677 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,557 |
| A to Z: Musical Terms #2 | 0 | - | 4.05 | 10,966 |
| Geography A-Z #4 | 0 | - | 4.36 | 25,779 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 124,954 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,408 |
| 17th Century A-Z | 0 | - | 4.78 | 34,191 |
| NATO Military Alphabet | 0 | - | 4.98 | 554,993 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 798,476 |
| Geography by Letter - A | 0 | - | 4.74 | 210,299 |
| Geography by Letter - B | 0 | - | 4.56 | 183,444 |
| Geography by Letter - H | 0 | - | 4.69 | 149,398 |
| Geography by Letter - C | 0 | - | 4.47 | 157,710 |
| Geography by Letter - D | 0 | - | 4.50 | 149,630 |
| Geography by Letter - E | 0 | - | 4.42 | 146,776 |
| Geography by Letter - I | 0 | - | 4.42 | 121,298 |
| Geography by Letter - K | 0 | - | 4.53 | 117,432 |
| Geography by Letter - L | 0 | - | 4.43 | 147,732 |
| Geography by Letter - M | 0 | - | 4.49 | 117,742 |
| Geography by Letter - N | 0 | - | 4.51 | 126,364 |
| Geography by Letter - P | 0 | - | 4.47 | 175,282 |
| Geography by Letter - R | 0 | - | 4.43 | 130,504 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 139,741 |
| Geography by Letter - U | 0 | - | 4.54 | 142,220 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 58,000 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,482 |
| Movies that Start with G | 0 | - | 4.48 | 68,281 |
| Movies that Start with I | 0 | - | 4.41 | 64,924 |
| Brand Logos That Start with A | 0 | - | 4.51 | 69,419 |
| Brand Logos That Start With B | 0 | - | 4.41 | 59,318 |
| Brand Logos That Start With M | 0 | - | 4.45 | 61,912 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,460 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,372 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,839 |
| Name the War | 0 | - | 4.37 | 200,895 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,420 |
| Famous Firsts #1 | 0 | - | 4.40 | 68,845 |
| Famous Families #1 | 0 | - | 4.20 | 83,427 |
| Names for Warriors | 0 | - | 4.40 | 36,805 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.40 | 30,665 |
| American Football A-Z | 0 | - | 4.26 | 14,480 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,017 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,770 |
| Empires by Maps | 0 | - | 4.98 | 118,767 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,559 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,784 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,565 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,314 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,138 |
| Countries by Military Spending | 0 | - | 4.93 | 176,565 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,306,595 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,590 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.91 | 119,835 |
| Animals that Start with L | 0 | - | 4.47 | 101,549 |
| Animals that Start with P | 0 | - | 4.45 | 85,772 |
| Animals that Start with S | 0 | - | 4.49 | 86,965 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 89,737 |
| Geography by Letter on the World Map - C | 0 | - | 4.78 | 116,736 |
| Metals of Antiquity | 0 | - | 4.94 | 92,988 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,247 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,202 |
| WWI... or WWII? | 0 | - | 4.85 | 140,845 |
| Oldest Things | 0 | - | 3.92 | 65,601 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,774 |
| Famous Firsts #2 | 0 | - | 4.00 | 80,860 |
| Famous Firsts #3 - The United States | 0 | - | 4.17 | 14,498 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 15,023 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,714 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,979 |
| Literature by Letter - A | 0 | - | 4.23 | 31,782 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,078 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 66,888 |
| Geography by Letter - G | 0 | - | 4.35 | 125,574 |
| Geography by Letter - F | 0 | - | 4.27 | 137,159 |
| Geography by Letter - J | 0 | - | 4.34 | 122,245 |
| Geography by Letter - O | 0 | - | 4.37 | 129,097 |
| Geography by Letter - V | 0 | - | 4.39 | 121,001 |
| Geography by Letter - W | 0 | - | 4.39 | 114,283 |
| Geography by Letter - Y | 0 | - | 4.39 | 110,763 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,115 |
| Geography by Letter - Q | 0 | - | 4.38 | 68,959 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.18 | 35,131 |
| Middle East A-Z | 0 | - | 4.47 | 45,836 |
| South America A-Z | 0 | - | 4.13 | 10,847 |
| Movies that Start with A | 0 | - | 4.13 | 61,662 |
| Movies that Start with C | 0 | - | 4.30 | 61,613 |
| Movies that Start with B | 0 | - | 4.35 | 84,945 |
| Movies that Start with D | 0 | - | 4.34 | 68,247 |
| Movies that Start with E | 0 | - | 4.13 | 68,189 |
| Movies that Start with J | 0 | - | 4.18 | 75,946 |
| Movies that Start with L | 0 | - | 4.16 | 60,238 |
| Movies that Start with M | 0 | - | 4.28 | 48,081 |
| Movies that Start with N | 0 | - | 4.02 | 41,125 |
| Movies that Start with P | 0 | - | 4.25 | 54,017 |
| Movies that Start with R | 0 | - | 4.17 | 46,473 |
| Movies that Start with W | 0 | - | 4.07 | 44,148 |
| Movies that Start with T | 0 | - | 4.33 | 49,140 |
| Movies that Start with S | 0 | - | 4.35 | 56,286 |
| Movies that Start with F | 0 | - | 4.13 | 68,662 |
| Music by Letter - F | 0 | - | 4.48 | 26,855 |
| Music by Letter - A | 0 | - | 4.61 | 31,229 |
| Brand Logos That Start With D | 0 | - | 4.37 | 60,809 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,116 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,334 |
| Brand Logos That Start With S | 0 | - | 4.37 | 56,861 |
| Influential Women in History | 0 | - | 4.42 | 35,177 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,055 |
| Cradles of Civilization | 0 | - | 4.46 | 39,242 |
| Materials From History #1 | 0 | - | 4.56 | 51,144 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,792 |
| Notable People of WWII | 0 | - | 4.53 | 85,354 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,484 |
| World War I Quiz | 0 | - | 4.78 | 100,341 |
| WWI A-Z | 0 | - | 4.50 | 38,052 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,333 |
| Famous Explorers | 0 | - | 4.58 | 36,001 |
| Famous Empires by Description | 0 | - | 4.73 | 118,013 |
| Answers by Time Period | 0 | - | 4.63 | 55,323 |
| Star Wars A-Z | 0 | - | 4.46 | 87,256 |
