| People in History A-Z #2 | 0 | - | 4.47 | 54,812 |
| People in History A-Z #3 | 0 | - | 4.44 | 45,954 |
| Empires A-Z | 0 | - | 4.51 | 44,814 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,800 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,726 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 193,921 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,382 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 190,736 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,373 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 179,372 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,141 |
| Name an Official Language A-Z | 0 | - | 4.91 | 174,745 |
| 20th Century A-Z | 0 | - | 4.50 | 53,163 |
| 19th Century A-Z | 0 | - | 4.77 | 46,734 |
| 18th Century A-Z | 0 | - | 4.54 | 42,647 |
| People in History A-Z #4 | 0 | - | 4.10 | 22,920 |
| History by Letter - A | 0 | - | 4.51 | 152,107 |
| History by Letter - B | 0 | - | 4.45 | 171,256 |
| History by Letter - C | 0 | - | 4.69 | 170,306 |
| History by Letter - E | 0 | - | 4.51 | 139,841 |
| History by Letter - G | 0 | - | 4.45 | 121,437 |
| History by Letter - H | 0 | - | 4.45 | 135,861 |
| History by Letter - J | 0 | - | 4.51 | 153,234 |
| History by Letter - N | 0 | - | 4.44 | 103,383 |
| History by Letter - S | 0 | - | 4.47 | 93,671 |
| History by Letter - W | 0 | - | 4.45 | 108,726 |
| History by Letter - M | 0 | - | 4.54 | 119,091 |
| History by Letter - K | 0 | - | 4.50 | 100,817 |
| History by Letter - L | 0 | - | 4.49 | 111,498 |
| History by Letter - I | 0 | - | 4.46 | 103,678 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,054 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,683 |
| Geography A-Z #5 | 0 | - | 4.47 | 37,186 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,331 |
| 16th Century A-Z | 0 | - | 4.58 | 24,380 |
| 15th Century A-Z | 0 | - | 4.49 | 23,396 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 128,664 |
| Geography by Letter - T | 0 | - | 4.84 | 152,407 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,202 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,327 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,585 |
| World Cities A-Z by Clue #1 | 0 | - | 4.55 | 65,901 |
| Islands A-Z | 0 | - | 4.46 | 116,743 |
| World Cities A-Z by Clue #2 | 0 | - | 4.45 | 57,403 |
| Human Body A-Z | 0 | - | 4.51 | 128,380 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 34,172 |
| Animals A-Z #1 | 0 | - | 4.41 | 92,806 |
| Africa A-Z | 0 | - | 4.57 | 46,367 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.60 | 47,503 |
| Ethnic Groups A-Z | 0 | - | 4.50 | 42,044 |
| History by Letter - D | 0 | - | 4.39 | 136,875 |
| History by Letter - F | 0 | - | 4.18 | 113,682 |
| History by Letter - O | 0 | - | 4.31 | 99,046 |
| History by Letter - P | 0 | - | 4.38 | 107,338 |
| History by Letter - Q | 0 | - | 4.34 | 79,973 |
| History by Letter - R | 0 | - | 4.26 | 121,646 |
| History by Letter - T | 0 | - | 4.39 | 104,867 |
| History by Letter - U | 0 | - | 4.19 | 100,239 |
| History by Letter - V | 0 | - | 4.27 | 80,361 |
| History by Letter - Y | 0 | - | 4.27 | 86,931 |
| History by Letter - Z | 0 | - | 4.18 | 76,738 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,114 |
| Disney A-Z | 0 | - | 4.37 | 86,369 |
| Companies A-Z | 0 | - | 4.30 | 42,609 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,480 |
| Religion A-Z #2 | 0 | - | 4.40 | 36,810 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 81,254 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 106,886 |
| Video Games A-Z | 0 | - | 4.08 | 38,685 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,075 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,147 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,543 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,912 |
| 14th Century A-Z | 0 | - | 4.40 | 23,731 |
| Military History A-Z | 0 | - | 4.20 | 21,037 |
| Double Letters A-Z | 0 | - | 4.51 | 27,069 |
| Animals A-Z #2 | 0 | - | 4.11 | 66,044 |
| Canada A-Z | 0 | - | 4.73 | 32,646 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 234,815 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,107 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,217 |
| Same Start and End Letter - History #1 | 0 | - | 4.16 | 24,664 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,538 |
| A to Z: Musical Terms #2 | 0 | - | 4.05 | 10,955 |
| Geography A-Z #4 | 0 | - | 4.36 | 25,762 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 124,901 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,384 |
| 17th Century A-Z | 0 | - | 4.78 | 34,171 |
| NATO Military Alphabet | 0 | - | 4.98 | 554,124 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 797,833 |
| Geography by Letter - A | 0 | - | 4.74 | 210,088 |
| Geography by Letter - B | 0 | - | 4.56 | 183,252 |
| Geography by Letter - H | 0 | - | 4.69 | 149,274 |
| Geography by Letter - C | 0 | - | 4.47 | 157,547 |
| Geography by Letter - D | 0 | - | 4.50 | 149,481 |
| Geography by Letter - E | 0 | - | 4.42 | 146,637 |
| Geography by Letter - I | 0 | - | 4.42 | 121,196 |
| Geography by Letter - K | 0 | - | 4.53 | 117,321 |
| Geography by Letter - L | 0 | - | 4.43 | 147,608 |
| Geography by Letter - M | 0 | - | 4.49 | 117,622 |
| Geography by Letter - N | 0 | - | 4.51 | 126,226 |
| Geography by Letter - P | 0 | - | 4.47 | 175,139 |
| Geography by Letter - R | 0 | - | 4.43 | 130,315 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 139,593 |
| Geography by Letter - U | 0 | - | 4.54 | 142,053 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 57,978 |
| Movies that Start with G | 0 | - | 4.48 | 68,239 |
| Movies that Start with I | 0 | - | 4.41 | 64,879 |
| Brand Logos That Start with A | 0 | - | 4.51 | 69,238 |
| Brand Logos That Start With B | 0 | - | 4.41 | 59,182 |
| Brand Logos That Start With M | 0 | - | 4.45 | 61,753 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,380 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,320 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,807 |
| Name the War | 0 | - | 4.37 | 200,756 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,407 |
| Famous Firsts #1 | 0 | - | 4.40 | 68,826 |
| Famous Families #1 | 0 | - | 4.20 | 83,393 |
| Names for Warriors | 0 | - | 4.40 | 36,788 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.40 | 30,654 |
| American Football A-Z | 0 | - | 4.26 | 14,474 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 16,992 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,523 |
| Empires by Maps | 0 | - | 4.98 | 118,462 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,459 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,645 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,527 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,217 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,088 |
| Countries by Military Spending | 0 | - | 4.93 | 176,385 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,304,709 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,506 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 119,689 |
| Animals that Start with L | 0 | - | 4.47 | 101,252 |
| Animals that Start with P | 0 | - | 4.45 | 85,639 |
| Animals that Start with S | 0 | - | 4.49 | 86,807 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 89,624 |
| Geography by Letter on the World Map - C | 0 | - | 4.78 | 116,575 |
| Metals of Antiquity | 0 | - | 4.94 | 92,900 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,158 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,178 |
| WWI... or WWII? | 0 | - | 4.85 | 140,619 |
| Oldest Things | 0 | - | 3.92 | 65,590 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,765 |
| Famous Firsts #2 | 0 | - | 4.00 | 80,845 |
| Famous Firsts #3 - The United States | 0 | - | 4.17 | 14,489 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 15,013 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,649 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,787 |
| Literature by Letter - A | 0 | - | 4.23 | 31,759 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,066 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 66,835 |
| Geography by Letter - G | 0 | - | 4.35 | 125,463 |
| Geography by Letter - F | 0 | - | 4.27 | 137,038 |
| Geography by Letter - J | 0 | - | 4.34 | 122,155 |
| Geography by Letter - O | 0 | - | 4.37 | 128,980 |
| Geography by Letter - V | 0 | - | 4.39 | 120,871 |
| Geography by Letter - W | 0 | - | 4.39 | 114,185 |
| Geography by Letter - Y | 0 | - | 4.39 | 110,655 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,020 |
| Geography by Letter - Q | 0 | - | 4.38 | 68,866 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.18 | 35,107 |
| Middle East A-Z | 0 | - | 4.47 | 45,786 |
| South America A-Z | 0 | - | 4.13 | 10,837 |
| Movies that Start with A | 0 | - | 4.13 | 61,631 |
| Movies that Start with C | 0 | - | 4.30 | 61,571 |
| Movies that Start with B | 0 | - | 4.35 | 84,904 |
| Movies that Start with D | 0 | - | 4.34 | 68,216 |
| Movies that Start with E | 0 | - | 4.13 | 68,162 |
| Movies that Start with J | 0 | - | 4.18 | 75,906 |
| Movies that Start with L | 0 | - | 4.16 | 60,218 |
| Movies that Start with M | 0 | - | 4.28 | 48,057 |
| Movies that Start with N | 0 | - | 4.02 | 41,101 |
| Movies that Start with P | 0 | - | 4.25 | 53,996 |
| Movies that Start with R | 0 | - | 4.17 | 46,437 |
| Movies that Start with W | 0 | - | 4.07 | 44,127 |
| Movies that Start with T | 0 | - | 4.33 | 49,105 |
| Movies that Start with S | 0 | - | 4.35 | 56,260 |
| Movies that Start with F | 0 | - | 4.13 | 68,628 |
| Music by Letter - F | 0 | - | 4.48 | 26,823 |
| Music by Letter - A | 0 | - | 4.61 | 31,185 |
| Brand Logos That Start With D | 0 | - | 4.37 | 60,656 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,005 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,177 |
| Brand Logos That Start With S | 0 | - | 4.37 | 56,695 |
| Influential Women in History | 0 | - | 4.42 | 34,981 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,020 |
| Cradles of Civilization | 0 | - | 4.46 | 39,048 |
| Materials From History #1 | 0 | - | 4.56 | 50,592 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,311 |
| Notable People of WWII | 0 | - | 4.53 | 85,316 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,418 |
| World War I Quiz | 0 | - | 4.78 | 100,249 |
| WWI A-Z | 0 | - | 4.50 | 38,023 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,168 |
| Famous Explorers | 0 | - | 4.58 | 35,943 |
| Famous Empires by Description | 0 | - | 4.70 | 117,540 |
| Answers by Time Period | 0 | - | 4.63 | 55,261 |
| Star Wars A-Z | 0 | - | 4.46 | 87,165 |
| Musical Acts by Letter - J | 0 | - | 4.20 | 77,163 |
