| Empires A-Z | 0 | - | 4.51 | 44,769 |
| History by Letter - A | 0 | - | 4.51 | 152,009 |
| History by Letter - B | 0 | - | 4.45 | 171,153 |
| History by Letter - C | 0 | - | 4.69 | 170,167 |
| History by Letter - E | 0 | - | 4.51 | 139,747 |
| History by Letter - G | 0 | - | 4.45 | 121,362 |
| History by Letter - H | 0 | - | 4.45 | 135,786 |
| History by Letter - J | 0 | - | 4.51 | 153,138 |
| History by Letter - N | 0 | - | 4.44 | 103,326 |
| History by Letter - S | 0 | - | 4.47 | 93,612 |
| History by Letter - W | 0 | - | 4.45 | 108,660 |
| History by Letter - M | 0 | - | 4.54 | 119,022 |
| History by Letter - K | 0 | - | 4.50 | 100,766 |
| History by Letter - L | 0 | - | 4.49 | 111,440 |
| History by Letter - I | 0 | - | 4.46 | 103,615 |
| Countries that Start with a Vowel | 0 | - | 4.98 | 128,462 |
| Geography by Letter - T | 0 | - | 4.84 | 152,186 |
| People in History A-Z #1 | 0 | - | 4.63 | 98,529 |
| People in History A-Z #2 | 0 | - | 4.47 | 54,769 |
| People in History A-Z #3 | 0 | - | 4.44 | 45,928 |
| History by Letter - D | 0 | - | 4.39 | 136,810 |
| History by Letter - F | 0 | - | 4.18 | 113,626 |
| History by Letter - O | 0 | - | 4.31 | 98,995 |
| History by Letter - P | 0 | - | 4.38 | 107,276 |
| History by Letter - Q | 0 | - | 4.34 | 79,932 |
| History by Letter - R | 0 | - | 4.26 | 121,585 |
| History by Letter - T | 0 | - | 4.39 | 104,769 |
| History by Letter - U | 0 | - | 4.19 | 100,173 |
| History by Letter - V | 0 | - | 4.27 | 80,316 |
| History by Letter - Y | 0 | - | 4.27 | 86,892 |
| History by Letter - Z | 0 | - | 4.18 | 76,702 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,102 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 81,168 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 106,798 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,650 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 193,800 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,315 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 190,602 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,272 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 179,282 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.82 | 72,073 |
| 20th Century A-Z | 0 | - | 4.50 | 53,124 |
| 19th Century A-Z | 0 | - | 4.77 | 46,705 |
| 18th Century A-Z | 0 | - | 4.54 | 42,617 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,496 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,871 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,777 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 234,594 |
| Name an Official Language A-Z | 0 | - | 4.90 | 174,608 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,079 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,184 |
| Same Start and End Letter - History #1 | 0 | - | 4.16 | 24,650 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,513 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 124,845 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,367 |
| 16th Century A-Z | 0 | - | 4.58 | 24,361 |
| 15th Century A-Z | 0 | - | 4.49 | 23,378 |
| 17th Century A-Z | 0 | - | 4.78 | 34,148 |
| NATO Military Alphabet | 0 | - | 4.98 | 553,555 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 797,415 |
| Geography by Letter - A | 0 | - | 4.74 | 209,929 |
| Geography by Letter - B | 0 | - | 4.56 | 183,103 |
| Geography by Letter - H | 0 | - | 4.69 | 149,156 |
| Geography by Letter - C | 0 | - | 4.47 | 157,419 |
| Geography by Letter - D | 0 | - | 4.50 | 149,361 |
| Geography by Letter - E | 0 | - | 4.42 | 146,534 |
| Geography by Letter - I | 0 | - | 4.42 | 121,091 |
| Geography by Letter - K | 0 | - | 4.53 | 117,223 |
| Geography by Letter - L | 0 | - | 4.43 | 147,495 |
| Geography by Letter - M | 0 | - | 4.49 | 117,510 |
| Geography by Letter - N | 0 | - | 4.51 | 126,128 |
| Geography by Letter - P | 0 | - | 4.47 | 175,016 |
| Geography by Letter - R | 0 | - | 4.43 | 130,173 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 139,242 |
| Geography by Letter - U | 0 | - | 4.54 | 141,921 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 57,943 |
| A to Z: Musical Terms | 0 | - | 4.43 | 40,979 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,661 |
| Geography A-Z #5 | 0 | - | 4.47 | 37,167 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,304 |
| Movies that Start with G | 0 | - | 4.48 | 68,219 |
| Movies that Start with I | 0 | - | 4.41 | 64,857 |
| Brand Logos That Start with A | 0 | - | 4.51 | 69,147 |
| Brand Logos That Start With B | 0 | - | 4.41 | 59,099 |
| Brand Logos That Start With M | 0 | - | 4.45 | 61,661 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,316 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,283 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,788 |
| Name the War Quiz | 0 | - | 4.37 | 200,668 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,394 |
| Famous Firsts #1 | 0 | - | 4.40 | 68,808 |
| Famous Families #1 | 0 | - | 4.20 | 83,370 |
| Names for Warriors | 0 | - | 4.40 | 36,781 |
| People in History A-Z #4 | 0 | - | 4.10 | 22,900 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,347 |
| Empires by Maps | 0 | - | 4.98 | 118,216 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,399 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,570 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,513 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,156 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,042 |
| 14th Century A-Z | 0 | - | 4.40 | 23,625 |
| Military History A-Z | 0 | - | 4.20 | 21,029 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,172 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,306 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,573 |
| Countries by Military Spending | 0 | - | 4.93 | 176,286 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,303,685 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,428 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 119,592 |
| Animals that Start with L | 0 | - | 4.47 | 101,202 |
| Animals that Start with P | 0 | - | 4.45 | 85,601 |
| Animals that Start with S | 0 | - | 4.49 | 86,768 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 89,549 |
| Geography by Letter on the World Map - C | 0 | - | 4.78 | 116,497 |
| World Cities A-Z by Clue #1 | 0 | - | 4.61 | 65,015 |
| Islands A-Z | 0 | - | 4.46 | 116,663 |
| World Cities A-Z by Clue #2 | 0 | - | 4.43 | 56,627 |
| Human Body A-Z | 0 | - | 4.51 | 128,197 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 33,535 |
| Animals A-Z #1 | 0 | - | 4.41 | 92,758 |
| Africa A-Z | 0 | - | 4.57 | 46,346 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.60 | 47,447 |
| Ethnic Groups A-Z | 0 | - | 4.50 | 42,019 |
| Metals of Antiquity | 0 | - | 4.94 | 92,822 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,099 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,156 |
| Oldest Things | 0 | - | 3.92 | 65,584 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,753 |
| Famous Firsts #2 | 0 | - | 4.00 | 80,833 |
| Famous Firsts #3 - The United States | 0 | - | 4.17 | 14,482 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,615 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,668 |
| Disney A-Z | 0 | - | 4.37 | 86,071 |
| Literature by Letter - A | 0 | - | 4.23 | 31,745 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,060 |
| Companies A-Z | 0 | - | 4.30 | 42,601 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 66,814 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,464 |
| Religion A-Z #2 | 0 | - | 4.40 | 36,791 |
| Geography by Letter - G | 0 | - | 4.35 | 125,366 |
| Geography by Letter - F | 0 | - | 4.27 | 136,939 |
| Geography by Letter - J | 0 | - | 4.34 | 122,057 |
| Geography by Letter - O | 0 | - | 4.37 | 128,883 |
| Geography by Letter - V | 0 | - | 4.39 | 120,428 |
| Geography by Letter - W | 0 | - | 4.39 | 114,077 |
| Geography by Letter - Y | 0 | - | 4.39 | 110,547 |
| Geography by Letter - Z | 0 | - | 4.11 | 80,931 |
| Geography by Letter - Q | 0 | - | 4.38 | 68,781 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.18 | 35,099 |
| Video Games A-Z | 0 | - | 4.08 | 38,652 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,054 |
| Middle East A-Z | 0 | - | 4.46 | 45,752 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,126 |
| Movies that Start with A | 0 | - | 4.13 | 61,609 |
| Movies that Start with C | 0 | - | 4.30 | 61,543 |
| Movies that Start with B | 0 | - | 4.35 | 84,871 |
| Movies that Start with D | 0 | - | 4.34 | 68,198 |
| Movies that Start with E | 0 | - | 4.13 | 68,143 |
| Movies that Start with J | 0 | - | 4.18 | 75,891 |
| Movies that Start with L | 0 | - | 4.16 | 60,198 |
| Movies that Start with M | 0 | - | 4.28 | 48,036 |
| Movies that Start with N | 0 | - | 4.02 | 41,087 |
| Movies that Start with P | 0 | - | 4.25 | 53,973 |
| Movies that Start with R | 0 | - | 4.17 | 46,417 |
| Movies that Start with W | 0 | - | 4.07 | 44,111 |
| Movies that Start with T | 0 | - | 4.33 | 49,086 |
| Movies that Start with S | 0 | - | 4.35 | 56,234 |
| Movies that Start with F | 0 | - | 4.13 | 68,612 |
| Music by Letter - F | 0 | - | 4.48 | 26,777 |
| Music by Letter - A | 0 | - | 4.61 | 31,155 |
| Brand Logos That Start With D | 0 | - | 4.37 | 60,573 |
| Brand Logos That Start With C | 0 | - | 4.17 | 48,961 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,093 |
| Brand Logos That Start With S | 0 | - | 4.37 | 56,594 |
| Influential Women in History | 0 | - | 4.42 | 34,901 |
| Google What's the Difference? - History | 0 | - | 4.20 | 45,995 |
| Cradles of Civilization | 0 | - | 4.46 | 38,965 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,036 |
| Notable People of WWII | 0 | - | 4.53 | 85,290 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,372 |
| World War I Quiz | 0 | - | 4.78 | 100,174 |
| WWI A-Z | 0 | - | 4.50 | 37,997 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,075 |
| Famous Explorers | 0 | - | 4.58 | 35,915 |
| Famous Empires by Description | 0 | - | 4.70 | 117,471 |
| Answers by Time Period | 0 | - | 4.63 | 55,231 |
| Star Wars A-Z | 0 | - | 4.46 | 87,080 |
| Musical Acts by Letter - J | 0 | - | 4.20 | 77,123 |
| Musical Acts by Letter - M | 0 | - | 4.14 | 92,885 |
| Musical Acts by Letter - N | 0 | - | 4.17 | 68,040 |
| Musical Acts by Letter - P | 0 | - | 4.24 | 65,122 |
| Musical Acts by Letter - R | 0 | - | 4.33 | 82,927 |
| Musical Acts by Letter - T | 0 | - | 4.15 | 67,495 |
| Musical Acts by Letter - A | 0 | - | 4.29 | 82,247 |
| Musical Acts by Letter - B | 0 | - | 4.32 | 72,856 |
| Musical Acts by Letter - C | 0 | - | 4.33 | 59,876 |
| Musical Acts by Letter - D | 0 | - | 4.13 | 52,821 |
| Musical Acts by Letter - E | 0 | - | 4.36 | 61,348 |
| Animals that Start with A | 0 | - | 4.26 | 111,180 |
