| Southernmost Countries A-Z | 0 | - | 4.95 | 154,141 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,724 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,947 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 194,009 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 302,030 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 181,296 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 73,525 |
| People in History A-Z #1 | 0 | - | 4.63 | 99,719 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,485 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,453 |
| Name an Official Language A-Z | 0 | - | 4.91 | 177,015 |
| 20th Century A-Z | 0 | - | 4.50 | 53,996 |
| 19th Century A-Z | 0 | - | 4.77 | 47,479 |
| 18th Century A-Z | 0 | - | 4.54 | 43,334 |
| People in History A-Z #5 | 0 | - | 4.09 | 32,130 |
| History by Letter - A | 0 | - | 4.51 | 153,905 |
| History by Letter - B | 0 | - | 4.45 | 173,301 |
| History by Letter - C | 0 | - | 4.70 | 172,657 |
| History by Letter - E | 0 | - | 4.51 | 141,505 |
| History by Letter - G | 0 | - | 4.46 | 122,902 |
| History by Letter - H | 0 | - | 4.45 | 137,589 |
| History by Letter - J | 0 | - | 4.51 | 155,015 |
| History by Letter - N | 0 | - | 4.45 | 104,814 |
| History by Letter - S | 0 | - | 4.47 | 94,991 |
| History by Letter - W | 0 | - | 4.45 | 110,235 |
| History by Letter - M | 0 | - | 4.54 | 120,704 |
| History by Letter - K | 0 | - | 4.50 | 102,019 |
| History by Letter - L | 0 | - | 4.50 | 112,818 |
| History by Letter - I | 0 | - | 4.46 | 105,033 |
| Religion A-Z #2 | 0 | - | 4.41 | 37,132 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,567 |
| Geography A-Z #2 | 0 | - | 4.46 | 53,156 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,511 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,827 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 155,426 |
| Geography by Letter - T | 0 | - | 4.84 | 155,223 |
| 16th Century A-Z | 0 | - | 4.59 | 25,025 |
| 15th Century A-Z | 0 | - | 4.50 | 24,019 |
| 14th Century A-Z | 0 | - | 4.41 | 24,508 |
| History by Letter - D | 0 | - | 4.40 | 138,594 |
| History by Letter - F | 0 | - | 4.19 | 115,090 |
| History by Letter - O | 0 | - | 4.32 | 100,290 |
| History by Letter - P | 0 | - | 4.36 | 108,480 |
| History by Letter - Q | 0 | - | 4.34 | 80,807 |
| History by Letter - R | 0 | - | 4.26 | 122,828 |
| History by Letter - T | 0 | - | 4.39 | 105,815 |
| History by Letter - U | 0 | - | 4.19 | 101,332 |
| History by Letter - V | 0 | - | 4.27 | 81,231 |
| History by Letter - Y | 0 | - | 4.27 | 87,734 |
| History by Letter - Z | 0 | - | 4.20 | 77,460 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,348 |
| History Containing the Letter X | 0 | - | 4.47 | 27,152 |
| Disney A-Z | 0 | - | 4.37 | 87,505 |
| Companies A-Z | 0 | - | 4.30 | 42,775 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,746 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 77,722 |
| Islands A-Z | 0 | - | 4.46 | 127,671 |
| World Cities A-Z by Clue #2 | 0 | - | 4.41 | 60,353 |
| Human Body A-Z | 0 | - | 4.51 | 130,061 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 43,008 |
| Video Games A-Z | 0 | - | 4.05 | 39,260 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,407 |
| Africa A-Z | 0 | - | 4.57 | 46,776 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.70 | 58,256 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,520 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,192 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 83,067 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 108,917 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.46 | 44,562 |
| "Second Best" History Edition | 0 | - | 4.94 | 64,256 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,450 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,881 |
| Military History A-Z | 0 | - | 4.20 | 21,254 |
| Double Letters A-Z | 0 | - | 4.51 | 27,225 |
| Animals A-Z #1 | 0 | - | 4.40 | 93,926 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,531 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 238,719 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,805 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,795 |
| History Ending in Z | 0 | - | 4.35 | 13,600 |
| A to Z: Musical Terms #2 | 0 | - | 4.08 | 11,129 |
| Geography A-Z #4 | 0 | - | 4.36 | 26,010 |
| Canada A-Z | 0 | - | 4.73 | 32,975 |
| People Depicted in Paintings | 0 | - | 4.55 | 44,828 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,710 |
| Territory Changes in World War I | 0 | - | 4.88 | 47,231 |
| 17th Century A-Z | 0 | - | 4.78 | 34,764 |
| NATO Military Alphabet | 0 | - | 4.98 | 564,419 |
| Geography by Letter - A | 0 | - | 4.74 | 212,868 |
| Geography by Letter - B | 0 | - | 4.56 | 185,857 |
| Geography by Letter - H | 0 | - | 4.69 | 151,471 |
| Geography by Letter - C | 0 | - | 4.48 | 159,762 |
| Geography by Letter - D | 0 | - | 4.50 | 151,737 |
| Geography by Letter - E | 0 | - | 4.42 | 148,570 |
| Geography by Letter - I | 0 | - | 4.42 | 122,777 |
| Geography by Letter - K | 0 | - | 4.54 | 119,110 |
| Geography by Letter - L | 0 | - | 4.44 | 149,617 |
| Geography by Letter - M | 0 | - | 4.49 | 119,615 |
| Geography by Letter - N | 0 | - | 4.51 | 127,978 |
| Geography by Letter - P | 0 | - | 4.47 | 176,929 |
| Geography by Letter - R | 0 | - | 4.43 | 132,687 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 141,496 |
| Geography by Letter - U | 0 | - | 4.52 | 143,978 |
| Asian Geography By Letter - K | 0 | - | 4.75 | 58,370 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,780 |
| Geography Containing the Letter Q | 0 | - | 4.56 | 43,178 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,620 |
| Movies that Start with G | 0 | - | 4.49 | 68,826 |
| Movies that Start with I | 0 | - | 4.41 | 65,429 |
| Brand Logos That Start with A | 0 | - | 4.52 | 71,210 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,979 |
| Empires by Maps | 0 | - | 4.98 | 122,190 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 54,173 |
| Famous Battles Quiz | 0 | - | 4.21 | 49,148 |
| Name the War | 0 | - | 4.37 | 202,862 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,644 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,448 |
| Famous Families #1 | 0 | - | 4.20 | 83,746 |
| Names for Warriors | 0 | - | 4.40 | 37,060 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,434 |
| The 7 Wonders of the Ancient World | 0 | - | 4.86 | 82,628 |
| Countries by Military Spending | 0 | - | 4.93 | 179,029 |
| Classic Novels by Plot #2 | 0 | - | 4.86 | 38,587 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 121,758 |
| Islam A-Z | 0 | - | 4.30 | 24,210 |
| American Football A-Z | 0 | - | 4.26 | 14,556 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,155 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,837 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,877 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,956 |
| WWII A-Z #1 | 0 | - | 4.73 | 103,397 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,907 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,488 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,578 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,775 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,326,077 |
| Animals that Start with L | 0 | - | 4.47 | 102,454 |
| Animals that Start with P | 0 | - | 4.45 | 86,486 |
| Animals that Start with S | 0 | - | 4.49 | 87,679 |
| Geography by Letter on the World Map - B | 0 | - | 4.49 | 91,140 |
| Geography by Letter on the World Map - C | 0 | - | 4.77 | 118,599 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,483 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,247 |
| Literature by Letter - A | 0 | - | 4.24 | 32,365 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,413 |
| Geography by Letter - G | 0 | - | 4.33 | 127,092 |
| Geography by Letter - F | 0 | - | 4.28 | 138,808 |
| Geography by Letter - J | 0 | - | 4.35 | 123,675 |
| Geography by Letter - O | 0 | - | 4.37 | 130,491 |
| Geography by Letter - V | 0 | - | 4.39 | 122,627 |
| Geography by Letter - W | 0 | - | 4.39 | 115,494 |
| Geography by Letter - Y | 0 | - | 4.39 | 112,192 |
| Geography by Letter - Z | 0 | - | 4.11 | 82,193 |
| Geography by Letter - Q | 0 | - | 4.38 | 70,090 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,380 |
| Movies that Start with A | 0 | - | 4.13 | 62,149 |
| Movies that Start with C | 0 | - | 4.30 | 62,148 |
| Movies that Start with B | 0 | - | 4.36 | 85,714 |
| Movies that Start with D | 0 | - | 4.34 | 68,673 |
| Movies that Start with E | 0 | - | 4.13 | 68,614 |
| Movies that Start with J | 0 | - | 4.18 | 76,424 |
| Movies that Start with L | 0 | - | 4.16 | 60,608 |
| Movies that Start with M | 0 | - | 4.28 | 48,408 |
| Movies that Start with N | 0 | - | 4.02 | 41,402 |
| Movies that Start with P | 0 | - | 4.25 | 54,300 |
| Movies that Start with R | 0 | - | 4.17 | 46,824 |
| Movies that Start with W | 0 | - | 4.07 | 44,376 |
| Movies that Start with T | 0 | - | 4.34 | 49,467 |
| Movies that Start with S | 0 | - | 4.35 | 56,647 |
| Movies that Start with F | 0 | - | 4.13 | 69,099 |
| Music by Letter - F | 0 | - | 4.47 | 27,142 |
| Music by Letter - A | 0 | - | 4.61 | 31,539 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,701 |
| Brand Logos That Start With D | 0 | - | 4.37 | 62,238 |
| Brand Logos That Start With C | 0 | - | 4.21 | 50,164 |
| Brand Logos That Start With L | 0 | - | 4.40 | 61,945 |
| Brand Logos That Start With M | 0 | - | 4.38 | 63,578 |
| Brand Logos That Start With S | 0 | - | 4.37 | 58,336 |
| Influential Women in History | 0 | - | 4.43 | 36,507 |
| Metals of Antiquity | 0 | - | 4.95 | 93,943 |
| Cradles of Civilization | 0 | - | 4.46 | 40,489 |
| Materials From History #1 | 0 | - | 4.56 | 52,078 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,160 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 710,243 |
| WWI... or WWII? | 0 | - | 4.85 | 143,507 |
| Oldest Things | 0 | - | 3.92 | 65,713 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,863 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 146,668 |
| Famous Explorers | 0 | - | 4.58 | 36,388 |
| Famous Empires by Description | 0 | - | 4.72 | 118,999 |
| Answers by Time Period | 0 | - | 4.64 | 55,894 |
| Coups d'Etat - Name the Country | 0 | - | 4.43 | 41,781 |
| Famous Firsts #3 - The United States | 0 | - | 4.20 | 14,949 |
| Years in History #1 - Multiple Choice | 0 | - | 4.82 | 70,650 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,567 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,464 |
| Middle East A-Z | 0 | - | 4.47 | 46,247 |
| South America A-Z | 0 | - | 4.15 | 10,948 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,380 |
| Notable People of WWII | 0 | - | 4.53 | 86,576 |
