| People in History A-Z #2 | 0 | - | 4.47 | 55,447 |
| Empires A-Z | 0 | - | 4.52 | 45,435 |
| People in History A-Z #5 | 0 | - | 4.09 | 32,117 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,076 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,608 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,884 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,874 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,908 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 181,209 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 73,448 |
| Name an Official Language A-Z | 0 | - | 4.91 | 176,889 |
| 20th Century A-Z | 0 | - | 4.50 | 53,964 |
| 19th Century A-Z | 0 | - | 4.77 | 47,452 |
| 18th Century A-Z | 0 | - | 4.54 | 43,308 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,177 |
| History by Letter - A | 0 | - | 4.51 | 153,841 |
| History by Letter - B | 0 | - | 4.45 | 173,220 |
| History by Letter - C | 0 | - | 4.70 | 172,569 |
| History by Letter - E | 0 | - | 4.51 | 141,435 |
| History by Letter - G | 0 | - | 4.46 | 122,851 |
| History by Letter - H | 0 | - | 4.45 | 137,517 |
| History by Letter - J | 0 | - | 4.51 | 154,941 |
| History by Letter - N | 0 | - | 4.45 | 104,762 |
| History by Letter - S | 0 | - | 4.47 | 94,931 |
| History by Letter - W | 0 | - | 4.45 | 110,175 |
| History by Letter - M | 0 | - | 4.54 | 120,646 |
| History by Letter - K | 0 | - | 4.50 | 101,956 |
| History by Letter - L | 0 | - | 4.50 | 112,773 |
| History by Letter - I | 0 | - | 4.46 | 104,983 |
| Religion A-Z #2 | 0 | - | 4.41 | 37,119 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,550 |
| Geography A-Z #2 | 0 | - | 4.46 | 53,130 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,502 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,804 |
| 16th Century A-Z | 0 | - | 4.58 | 25,007 |
| 15th Century A-Z | 0 | - | 4.49 | 24,005 |
| 14th Century A-Z | 0 | - | 4.41 | 24,493 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 155,225 |
| Geography by Letter - T | 0 | - | 4.84 | 155,042 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,466 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,564 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,762 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 76,350 |
| Islands A-Z | 0 | - | 4.46 | 127,348 |
| World Cities A-Z by Clue #2 | 0 | - | 4.41 | 60,168 |
| Human Body A-Z | 0 | - | 4.51 | 129,618 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 42,960 |
| Africa A-Z | 0 | - | 4.57 | 46,760 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.70 | 58,202 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,491 |
| History by Letter - D | 0 | - | 4.40 | 138,540 |
| History by Letter - F | 0 | - | 4.19 | 115,054 |
| History by Letter - O | 0 | - | 4.32 | 100,251 |
| History by Letter - P | 0 | - | 4.36 | 108,437 |
| History by Letter - Q | 0 | - | 4.34 | 80,771 |
| History by Letter - R | 0 | - | 4.26 | 122,779 |
| History by Letter - T | 0 | - | 4.39 | 105,778 |
| History by Letter - U | 0 | - | 4.19 | 101,289 |
| History by Letter - V | 0 | - | 4.27 | 81,190 |
| History by Letter - Y | 0 | - | 4.27 | 87,699 |
| History by Letter - Z | 0 | - | 4.20 | 77,430 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,336 |
| History Containing the Letter X | 0 | - | 4.47 | 27,143 |
| Disney A-Z | 0 | - | 4.37 | 87,468 |
| Companies A-Z | 0 | - | 4.30 | 42,767 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,739 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 82,959 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 108,796 |
| Video Games A-Z | 0 | - | 4.05 | 39,232 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,393 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.46 | 44,545 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,407 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,838 |
| Military History A-Z | 0 | - | 4.20 | 21,238 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.41 | 30,794 |
| Double Letters A-Z | 0 | - | 4.51 | 27,220 |
| Animals A-Z #1 | 0 | - | 4.40 | 93,900 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,515 |
| Canada A-Z | 0 | - | 4.73 | 32,957 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 238,531 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,656 |
| Territory Changes in World War I | 0 | - | 4.88 | 47,151 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,799 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,781 |
| History Ending in Z | 0 | - | 4.35 | 13,593 |
| A to Z: Musical Terms #2 | 0 | - | 4.08 | 11,123 |
| Geography A-Z #4 | 0 | - | 4.36 | 25,999 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,582 |
| People Depicted in Paintings | 0 | - | 4.55 | 44,809 |
| 17th Century A-Z | 0 | - | 4.78 | 34,745 |
| NATO Military Alphabet | 0 | - | 4.98 | 563,975 |
| Geography by Letter - A | 0 | - | 4.74 | 212,704 |
| Geography by Letter - B | 0 | - | 4.56 | 185,689 |
| Geography by Letter - H | 0 | - | 4.69 | 151,178 |
| Geography by Letter - C | 0 | - | 4.48 | 159,623 |
| Geography by Letter - D | 0 | - | 4.50 | 151,605 |
| Geography by Letter - E | 0 | - | 4.42 | 148,435 |
| Geography by Letter - I | 0 | - | 4.42 | 122,682 |
| Geography by Letter - K | 0 | - | 4.54 | 119,017 |
| Geography by Letter - L | 0 | - | 4.44 | 149,516 |
| Geography by Letter - M | 0 | - | 4.49 | 119,519 |
| Geography by Letter - N | 0 | - | 4.51 | 127,883 |
| Geography by Letter - P | 0 | - | 4.47 | 176,827 |
| Geography by Letter - R | 0 | - | 4.43 | 132,560 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 141,378 |
| Geography by Letter - U | 0 | - | 4.52 | 143,866 |
| Asian Geography By Letter - K | 0 | - | 4.75 | 58,333 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,760 |
| Movies that Start with G | 0 | - | 4.49 | 68,800 |
| Movies that Start with I | 0 | - | 4.41 | 65,400 |
| Brand Logos That Start with A | 0 | - | 4.52 | 71,108 |
| WWII A-Z #1 | 0 | - | 4.73 | 103,327 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,870 |
| Famous Battles Quiz | 0 | - | 4.21 | 49,124 |
| Name the War | 0 | - | 4.37 | 202,784 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,631 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,430 |
| Famous Families #1 | 0 | - | 4.20 | 83,724 |
| Names for Warriors | 0 | - | 4.40 | 37,050 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,409 |
| Islam A-Z | 0 | - | 4.30 | 24,188 |
| American Football A-Z | 0 | - | 4.26 | 14,555 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,148 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,775 |
| Empires by Maps | 0 | - | 4.98 | 121,918 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,778 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,833 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,940 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 54,107 |
| The 7 Wonders of the Ancient World | 0 | - | 4.86 | 82,600 |
| Countries by Military Spending | 0 | - | 4.93 | 178,941 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,324,840 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 38,547 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 121,665 |
| Animals that Start with L | 0 | - | 4.47 | 102,415 |
| Animals that Start with P | 0 | - | 4.45 | 86,454 |
| Animals that Start with S | 0 | - | 4.49 | 87,652 |
| Geography by Letter on the World Map - B | 0 | - | 4.49 | 91,053 |
| Geography by Letter on the World Map - C | 0 | - | 4.77 | 118,485 |
| Metals of Antiquity | 0 | - | 4.95 | 93,884 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,108 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,470 |
| WWI... or WWII? | 0 | - | 4.85 | 143,277 |
| Oldest Things | 0 | - | 3.92 | 65,709 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,858 |
| Famous Firsts #3 - The United States | 0 | - | 4.20 | 14,940 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,229 |
| Years in History #1 - Multiple Choice | 0 | - | 4.82 | 70,601 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,439 |
| Literature by Letter - A | 0 | - | 4.24 | 32,336 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,398 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,430 |
| Geography by Letter - G | 0 | - | 4.33 | 126,997 |
| Geography by Letter - F | 0 | - | 4.28 | 138,712 |
| Geography by Letter - J | 0 | - | 4.35 | 123,598 |
| Geography by Letter - O | 0 | - | 4.37 | 130,406 |
| Geography by Letter - V | 0 | - | 4.39 | 122,506 |
| Geography by Letter - W | 0 | - | 4.39 | 115,417 |
| Geography by Letter - Y | 0 | - | 4.39 | 112,112 |
| Geography by Letter - Z | 0 | - | 4.11 | 82,126 |
| Geography by Letter - Q | 0 | - | 4.38 | 70,009 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,369 |
| Middle East A-Z | 0 | - | 4.47 | 46,232 |
| South America A-Z | 0 | - | 4.15 | 10,943 |
| Movies that Start with A | 0 | - | 4.13 | 62,120 |
| Movies that Start with C | 0 | - | 4.30 | 62,109 |
| Movies that Start with B | 0 | - | 4.36 | 85,683 |
| Movies that Start with D | 0 | - | 4.34 | 68,647 |
| Movies that Start with E | 0 | - | 4.13 | 68,583 |
| Movies that Start with J | 0 | - | 4.18 | 76,403 |
| Movies that Start with L | 0 | - | 4.16 | 60,584 |
| Movies that Start with M | 0 | - | 4.28 | 48,386 |
| Movies that Start with N | 0 | - | 4.02 | 41,383 |
| Movies that Start with P | 0 | - | 4.25 | 54,281 |
| Movies that Start with R | 0 | - | 4.17 | 46,805 |
| Movies that Start with W | 0 | - | 4.07 | 44,367 |
| Movies that Start with T | 0 | - | 4.34 | 49,448 |
| Movies that Start with S | 0 | - | 4.35 | 56,626 |
| Movies that Start with F | 0 | - | 4.13 | 69,067 |
| Music by Letter - F | 0 | - | 4.47 | 27,125 |
| Music by Letter - A | 0 | - | 4.61 | 31,520 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,599 |
| Brand Logos That Start With D | 0 | - | 4.36 | 62,145 |
| Brand Logos That Start With C | 0 | - | 4.20 | 50,090 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,857 |
| Brand Logos That Start With M | 0 | - | 4.38 | 63,471 |
| Brand Logos That Start With S | 0 | - | 4.37 | 58,234 |
| Influential Women in History | 0 | - | 4.43 | 36,434 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,363 |
| Cradles of Civilization | 0 | - | 4.46 | 40,406 |
| Materials From History #1 | 0 | - | 4.56 | 52,034 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 709,957 |
| Notable People of WWII | 0 | - | 4.53 | 86,199 |
| WWII Trivia #2 | 0 | - | 4.52 | 104,538 |
| World War I Quiz | 0 | - | 4.78 | 102,023 |
| WWI A-Z | 0 | - | 4.51 | 38,586 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 146,575 |
| Famous Explorers | 0 | - | 4.58 | 36,363 |
| Famous Empires by Description | 0 | - | 4.73 | 118,949 |
| Answers by Time Period | 0 | - | 4.64 | 55,852 |
