| Empires A-Z | 0 | - | 4.52 | 45,520 |
| History by Letter - A | 0 | - | 4.51 | 154,074 |
| History by Letter - B | 0 | - | 4.45 | 173,507 |
| History by Letter - C | 0 | - | 4.70 | 172,863 |
| History by Letter - E | 0 | - | 4.51 | 141,672 |
| History by Letter - G | 0 | - | 4.46 | 123,234 |
| History by Letter - H | 0 | - | 4.45 | 137,758 |
| History by Letter - J | 0 | - | 4.51 | 155,199 |
| History by Letter - N | 0 | - | 4.45 | 104,920 |
| History by Letter - S | 0 | - | 4.47 | 95,097 |
| History by Letter - W | 0 | - | 4.45 | 110,351 |
| History by Letter - M | 0 | - | 4.54 | 120,829 |
| History by Letter - K | 0 | - | 4.50 | 102,133 |
| History by Letter - L | 0 | - | 4.50 | 112,944 |
| History by Letter - I | 0 | - | 4.46 | 105,157 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 155,832 |
| Geography by Letter - T | 0 | - | 4.84 | 155,560 |
| People in History A-Z #1 | 0 | - | 4.63 | 99,832 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,551 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,502 |
| History by Letter - D | 0 | - | 4.40 | 138,759 |
| History by Letter - F | 0 | - | 4.19 | 115,212 |
| History by Letter - O | 0 | - | 4.32 | 100,390 |
| History by Letter - P | 0 | - | 4.36 | 108,590 |
| History by Letter - Q | 0 | - | 4.34 | 80,889 |
| History by Letter - R | 0 | - | 4.26 | 122,932 |
| History by Letter - T | 0 | - | 4.39 | 105,916 |
| History by Letter - U | 0 | - | 4.19 | 101,430 |
| History by Letter - V | 0 | - | 4.27 | 81,302 |
| History by Letter - Y | 0 | - | 4.27 | 87,812 |
| History by Letter - Z | 0 | - | 4.20 | 77,544 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,372 |
| History Containing the Letter X | 0 | - | 4.47 | 27,177 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 83,220 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 109,085 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,232 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 197,246 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 171,080 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 194,273 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 302,258 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 181,482 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 73,635 |
| 20th Century A-Z | 0 | - | 4.50 | 54,052 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,571 |
| Countries That Were Invaded | 0 | - | 4.55 | 98,346 |
| 19th Century A-Z | 0 | - | 4.77 | 47,519 |
| 18th Century A-Z | 0 | - | 4.54 | 43,366 |
| 17th Century A-Z | 0 | - | 4.78 | 34,790 |
| People in History A-Z #5 | 0 | - | 4.09 | 32,160 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 239,059 |
| Name an Official Language A-Z | 0 | - | 4.91 | 177,221 |
| "Second Best" History Edition | 0 | - | 4.94 | 64,432 |
| Normandy D-Day Beaches | 0 | - | 4.84 | 40,805 |
| Territory Changes in World War I | 0 | - | 4.88 | 47,390 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,823 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,813 |
| History Ending in Z | 0 | - | 4.35 | 13,609 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,680 |
| People Depicted in Paintings | 0 | - | 4.55 | 44,875 |
| NATO Military Alphabet | 0 | - | 4.98 | 565,401 |
| Religion A-Z #2 | 0 | - | 4.41 | 37,158 |
| Geography by Letter - A | 0 | - | 4.75 | 213,265 |
| Geography by Letter - B | 0 | - | 4.61 | 186,152 |
| Geography by Letter - H | 0 | - | 4.69 | 151,686 |
| Geography by Letter - C | 0 | - | 4.48 | 160,008 |
| Geography by Letter - D | 0 | - | 4.50 | 151,958 |
| Geography by Letter - E | 0 | - | 4.42 | 148,785 |
| Geography by Letter - I | 0 | - | 4.42 | 122,946 |
| Geography by Letter - K | 0 | - | 4.54 | 119,430 |
| Geography by Letter - L | 0 | - | 4.44 | 149,820 |
| Geography by Letter - M | 0 | - | 4.51 | 119,786 |
| Geography by Letter - N | 0 | - | 4.51 | 128,144 |
| Geography by Letter - P | 0 | - | 4.47 | 177,109 |
| Geography by Letter - R | 0 | - | 4.43 | 132,912 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 141,715 |
| Geography by Letter - U | 0 | - | 4.52 | 144,350 |
| Asian Geography By Letter - K | 0 | - | 4.75 | 58,418 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,816 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,601 |
| Geography A-Z #2 | 0 | - | 4.46 | 53,198 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,547 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,876 |
| Movies that Start with G | 0 | - | 4.49 | 68,871 |
| Movies that Start with I | 0 | - | 4.41 | 65,459 |
| Brand Logos That Start with A | 0 | - | 4.52 | 71,397 |
| WWII A-Z #1 | 0 | - | 4.73 | 103,495 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,956 |
| Famous Battles Quiz | 0 | - | 4.21 | 49,185 |
| Name the War | 0 | - | 4.37 | 203,037 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,664 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,477 |
| Famous Families #1 | 0 | - | 4.20 | 83,781 |
| Names for Warriors | 0 | - | 4.40 | 37,095 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,462 |
| 16th Century A-Z | 0 | - | 4.59 | 25,050 |
| 15th Century A-Z | 0 | - | 4.50 | 24,042 |
| 14th Century A-Z | 0 | - | 4.41 | 24,535 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,215 |
| Former Countries by Territory Map | 0 | - | 4.96 | 104,278 |
| Empires by Maps | 0 | - | 4.98 | 122,670 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 120,019 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 106,150 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 49,038 |
| The 7 Wonders of the Ancient World | 0 | - | 4.86 | 82,676 |
| Military History A-Z | 0 | - | 4.20 | 21,277 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,525 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,598 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,798 |
| Countries by Military Spending | 0 | - | 4.93 | 179,223 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,328,140 |
| Classic Novels by Plot #2 | 0 | - | 4.86 | 38,686 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 121,913 |
| Animals that Start with L | 0 | - | 4.47 | 102,574 |
| Animals that Start with P | 0 | - | 4.45 | 86,578 |
| Animals that Start with S | 0 | - | 4.49 | 87,778 |
| Geography by Letter on the World Map - B | 0 | - | 4.49 | 91,254 |
| Geography by Letter on the World Map - C | 0 | - | 4.77 | 118,753 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 78,328 |
| Islands A-Z | 0 | - | 4.46 | 128,148 |
| World Cities A-Z by Clue #2 | 0 | - | 4.41 | 60,482 |
| Human Body A-Z | 0 | - | 4.51 | 130,181 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 43,106 |
| Africa A-Z | 0 | - | 4.57 | 46,806 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.70 | 58,325 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,583 |
| Metals of Antiquity | 0 | - | 4.95 | 94,047 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,246 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 54,260 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,501 |
| WWI... or WWII? | 0 | - | 4.85 | 143,902 |
| Oldest Things | 0 | - | 3.92 | 65,727 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,876 |
| Famous Firsts #3 - The United States | 0 | - | 4.20 | 14,957 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,267 |
| Years in History #1 - Multiple Choice | 0 | - | 4.82 | 70,731 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,844 |
| Disney A-Z | 0 | - | 4.37 | 87,602 |
| Literature by Letter - A | 0 | - | 4.24 | 32,430 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,446 |
| Companies A-Z | 0 | - | 4.30 | 42,783 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,522 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,775 |
| Geography by Letter - G | 0 | - | 4.33 | 127,254 |
| Geography by Letter - F | 0 | - | 4.28 | 138,965 |
| Geography by Letter - J | 0 | - | 4.35 | 123,835 |
| Geography by Letter - O | 0 | - | 4.37 | 130,659 |
| Geography by Letter - V | 0 | - | 4.39 | 122,809 |
| Geography by Letter - W | 0 | - | 4.39 | 115,640 |
| Geography by Letter - Y | 0 | - | 4.39 | 112,354 |
| Geography by Letter - Z | 0 | - | 4.11 | 82,323 |
| Geography by Letter - Q | 0 | - | 4.38 | 70,235 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,409 |
| Video Games A-Z | 0 | - | 4.05 | 39,302 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,442 |
| Middle East A-Z | 0 | - | 4.47 | 46,280 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.46 | 44,596 |
| Movies that Start with A | 0 | - | 4.13 | 62,179 |
| Movies that Start with C | 0 | - | 4.30 | 62,193 |
| Movies that Start with B | 0 | - | 4.36 | 85,743 |
| Movies that Start with D | 0 | - | 4.34 | 68,702 |
| Movies that Start with E | 0 | - | 4.13 | 68,644 |
| Movies that Start with J | 0 | - | 4.18 | 76,466 |
| Movies that Start with L | 0 | - | 4.16 | 60,643 |
| Movies that Start with M | 0 | - | 4.28 | 48,438 |
| Movies that Start with N | 0 | - | 4.02 | 41,424 |
| Movies that Start with P | 0 | - | 4.25 | 54,319 |
| Movies that Start with R | 0 | - | 4.17 | 46,861 |
| Movies that Start with W | 0 | - | 4.07 | 44,394 |
| Movies that Start with T | 0 | - | 4.34 | 49,491 |
| Movies that Start with S | 0 | - | 4.35 | 56,670 |
| Movies that Start with F | 0 | - | 4.13 | 69,128 |
| Music by Letter - F | 0 | - | 4.47 | 27,163 |
| Music by Letter - A | 0 | - | 4.61 | 31,562 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,820 |
| Brand Logos That Start With D | 0 | - | 4.37 | 62,389 |
| Brand Logos That Start With C | 0 | - | 4.21 | 50,277 |
| Brand Logos That Start With L | 0 | - | 4.40 | 62,086 |
| Brand Logos That Start With M | 0 | - | 4.38 | 63,721 |
| Brand Logos That Start With S | 0 | - | 4.37 | 58,499 |
| Influential Women in History | 0 | - | 4.43 | 36,598 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,418 |
| Cradles of Civilization | 0 | - | 4.46 | 40,562 |
| Materials From History #1 | 0 | - | 4.56 | 52,139 |
| Materials From History #2 | 0 | - | 4.59 | 31,640 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 710,887 |
| Notable People of WWII | 0 | - | 4.53 | 86,657 |
| WWII Trivia #2 | 0 | - | 4.52 | 104,737 |
| World War I Quiz | 0 | - | 4.78 | 102,199 |
| WWI A-Z | 0 | - | 4.51 | 38,680 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 146,779 |
| Famous Explorers | 0 | - | 4.58 | 36,418 |
| Famous Empires by Description | 0 | - | 4.74 | 119,088 |
| Answers by Time Period | 0 | - | 4.64 | 55,950 |
| Coups d'Etat - Name the Country | 0 | - | 4.43 | 42,479 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.41 | 30,814 |
| Star Wars A-Z | 0 | - | 4.46 | 89,003 |
| Musical Acts by Letter - J | 0 | - | 4.17 | 77,796 |
| Musical Acts by Letter - M | 0 | - | 4.15 | 93,923 |
| Musical Acts by Letter - N | 0 | - | 4.17 | 68,623 |
| Musical Acts by Letter - P | 0 | - | 4.24 | 65,729 |
