| People in History A-Z #2 | 0 | - | 4.47 | 55,398 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,397 |
| Empires A-Z | 0 | - | 4.52 | 45,384 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,955 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,435 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,749 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,655 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,688 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 181,086 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 73,327 |
| Name an Official Language A-Z | 0 | - | 4.91 | 176,711 |
| 20th Century A-Z | 0 | - | 4.50 | 53,927 |
| 19th Century A-Z | 0 | - | 4.77 | 47,427 |
| 18th Century A-Z | 0 | - | 4.54 | 43,283 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,161 |
| History by Letter - A | 0 | - | 4.51 | 153,723 |
| History by Letter - B | 0 | - | 4.45 | 173,079 |
| History by Letter - C | 0 | - | 4.70 | 172,416 |
| History by Letter - E | 0 | - | 4.51 | 141,316 |
| History by Letter - G | 0 | - | 4.46 | 122,737 |
| History by Letter - H | 0 | - | 4.45 | 137,400 |
| History by Letter - J | 0 | - | 4.51 | 154,798 |
| History by Letter - N | 0 | - | 4.45 | 104,670 |
| History by Letter - S | 0 | - | 4.47 | 94,849 |
| History by Letter - W | 0 | - | 4.45 | 110,073 |
| History by Letter - M | 0 | - | 4.54 | 120,539 |
| History by Letter - K | 0 | - | 4.50 | 101,866 |
| History by Letter - L | 0 | - | 4.50 | 112,660 |
| History by Letter - I | 0 | - | 4.46 | 104,890 |
| Religion A-Z #2 | 0 | - | 4.41 | 37,098 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,520 |
| Geography A-Z #2 | 0 | - | 4.46 | 53,089 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,479 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,762 |
| 16th Century A-Z | 0 | - | 4.58 | 24,988 |
| 15th Century A-Z | 0 | - | 4.49 | 23,993 |
| 14th Century A-Z | 0 | - | 4.41 | 24,472 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 154,966 |
| Geography by Letter - T | 0 | - | 4.84 | 154,878 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,452 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,543 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,751 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 68,616 |
| Islands A-Z | 0 | - | 4.45 | 126,928 |
| World Cities A-Z by Clue #2 | 0 | - | 4.41 | 59,450 |
| Human Body A-Z | 0 | - | 4.51 | 129,551 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 42,880 |
| Africa A-Z | 0 | - | 4.57 | 46,743 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.70 | 58,160 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,461 |
| History by Letter - D | 0 | - | 4.40 | 138,431 |
| History by Letter - F | 0 | - | 4.18 | 114,959 |
| History by Letter - O | 0 | - | 4.32 | 99,953 |
| History by Letter - P | 0 | - | 4.36 | 108,332 |
| History by Letter - Q | 0 | - | 4.34 | 80,695 |
| History by Letter - R | 0 | - | 4.26 | 122,690 |
| History by Letter - T | 0 | - | 4.39 | 105,694 |
| History by Letter - U | 0 | - | 4.19 | 101,211 |
| History by Letter - V | 0 | - | 4.27 | 81,119 |
| History by Letter - Y | 0 | - | 4.27 | 87,637 |
| History by Letter - Z | 0 | - | 4.20 | 77,381 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,320 |
| History Containing the Letter X | 0 | - | 4.47 | 27,129 |
| Disney A-Z | 0 | - | 4.37 | 87,411 |
| Companies A-Z | 0 | - | 4.30 | 42,757 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,717 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 82,839 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 108,673 |
| Video Games A-Z | 0 | - | 4.05 | 39,182 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,371 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.46 | 44,503 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,356 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,741 |
| Military History A-Z | 0 | - | 4.20 | 21,227 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.41 | 30,782 |
| Double Letters A-Z | 0 | - | 4.51 | 27,209 |
| Animals A-Z #1 | 0 | - | 4.40 | 93,867 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,495 |
| Canada A-Z | 0 | - | 4.73 | 32,936 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 238,285 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,608 |
| Territory Changes in World War I | 0 | - | 4.88 | 47,064 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,788 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,764 |
| History Ending in Z | 0 | - | 4.35 | 13,582 |
| A to Z: Musical Terms #2 | 0 | - | 4.08 | 11,100 |
| Geography A-Z #4 | 0 | - | 4.36 | 25,980 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,538 |
| People Depicted in Paintings | 0 | - | 4.55 | 44,785 |
| 17th Century A-Z | 0 | - | 4.78 | 34,730 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,966 |
| NATO Military Alphabet | 0 | - | 4.98 | 563,336 |
| Geography by Letter - A | 0 | - | 4.74 | 212,561 |
| Geography by Letter - B | 0 | - | 4.56 | 185,541 |
| Geography by Letter - H | 0 | - | 4.69 | 151,076 |
| Geography by Letter - C | 0 | - | 4.48 | 159,511 |
| Geography by Letter - D | 0 | - | 4.50 | 151,497 |
| Geography by Letter - E | 0 | - | 4.42 | 148,330 |
| Geography by Letter - I | 0 | - | 4.42 | 122,590 |
| Geography by Letter - K | 0 | - | 4.54 | 118,941 |
| Geography by Letter - L | 0 | - | 4.44 | 149,419 |
| Geography by Letter - M | 0 | - | 4.49 | 119,430 |
| Geography by Letter - N | 0 | - | 4.51 | 127,802 |
| Geography by Letter - P | 0 | - | 4.47 | 176,730 |
| Geography by Letter - R | 0 | - | 4.43 | 132,441 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 141,269 |
| Geography by Letter - U | 0 | - | 4.52 | 143,762 |
| Asian Geography By Letter - K | 0 | - | 4.75 | 58,306 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,747 |
| Movies that Start with G | 0 | - | 4.49 | 68,761 |
| Movies that Start with I | 0 | - | 4.41 | 65,365 |
| WWII A-Z #1 | 0 | - | 4.73 | 103,264 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,826 |
| Famous Battles Quiz | 0 | - | 4.21 | 49,092 |
| Name the War | 0 | - | 4.37 | 202,665 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,613 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,404 |
| Famous Families #1 | 0 | - | 4.20 | 83,707 |
| Names for Warriors | 0 | - | 4.40 | 37,036 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,394 |
| Islam A-Z | 0 | - | 4.30 | 24,164 |
| American Football A-Z | 0 | - | 4.26 | 14,549 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,141 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,490 |
| Empires by Maps | 0 | - | 4.98 | 121,507 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,692 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,743 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,915 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 54,030 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,544 |
| Countries by Military Spending | 0 | - | 4.93 | 178,784 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,323,462 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 38,490 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 121,513 |
| Animals that Start with L | 0 | - | 4.47 | 102,364 |
| Animals that Start with P | 0 | - | 4.45 | 86,409 |
| Animals that Start with S | 0 | - | 4.49 | 87,611 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,958 |
| Geography by Letter on the World Map - C | 0 | - | 4.77 | 118,378 |
| Metals of Antiquity | 0 | - | 4.95 | 93,805 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,044 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,455 |
| WWI... or WWII? | 0 | - | 4.85 | 143,083 |
| Oldest Things | 0 | - | 3.92 | 65,701 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,850 |
| Famous Firsts #3 - The United States | 0 | - | 4.20 | 14,932 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,208 |
| Years in History #1 - Multiple Choice | 0 | - | 4.82 | 70,534 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,477 |
| Brand Logos That Start With D | 0 | - | 4.36 | 62,031 |
| Brand Logos That Start With C | 0 | - | 4.20 | 50,010 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,727 |
| Brand Logos That Start With M | 0 | - | 4.38 | 63,360 |
| Brand Logos That Start With S | 0 | - | 4.37 | 58,109 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,234 |
| Literature by Letter - A | 0 | - | 4.24 | 32,316 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,388 |
| Top Five Exporting Partners by Country | 0 | - | 4.86 | 67,362 |
| Geography by Letter - G | 0 | - | 4.33 | 126,914 |
| Geography by Letter - F | 0 | - | 4.28 | 138,637 |
| Geography by Letter - J | 0 | - | 4.35 | 123,512 |
| Geography by Letter - O | 0 | - | 4.37 | 130,326 |
| Geography by Letter - V | 0 | - | 4.39 | 122,400 |
| Geography by Letter - W | 0 | - | 4.39 | 115,346 |
| Geography by Letter - Y | 0 | - | 4.39 | 112,032 |
| Geography by Letter - Z | 0 | - | 4.11 | 82,064 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,951 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,358 |
| Middle East A-Z | 0 | - | 4.47 | 46,211 |
| South America A-Z | 0 | - | 4.15 | 10,938 |
| Movies that Start with A | 0 | - | 4.13 | 62,089 |
| Movies that Start with C | 0 | - | 4.30 | 62,077 |
| Movies that Start with B | 0 | - | 4.36 | 85,643 |
| Movies that Start with D | 0 | - | 4.34 | 68,615 |
| Movies that Start with E | 0 | - | 4.13 | 68,558 |
| Movies that Start with J | 0 | - | 4.18 | 76,372 |
| Movies that Start with L | 0 | - | 4.16 | 60,565 |
| Movies that Start with M | 0 | - | 4.28 | 48,368 |
| Movies that Start with N | 0 | - | 4.02 | 41,359 |
| Movies that Start with P | 0 | - | 4.25 | 54,258 |
| Movies that Start with R | 0 | - | 4.17 | 46,779 |
| Movies that Start with W | 0 | - | 4.07 | 44,355 |
| Movies that Start with T | 0 | - | 4.34 | 49,430 |
| Movies that Start with S | 0 | - | 4.35 | 56,606 |
| Movies that Start with F | 0 | - | 4.13 | 69,042 |
| Music by Letter - F | 0 | - | 4.47 | 27,109 |
| Music by Letter - A | 0 | - | 4.61 | 31,499 |
| Influential Women in History | 0 | - | 4.42 | 36,233 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,347 |
| Cradles of Civilization | 0 | - | 4.46 | 40,185 |
| Materials From History #1 | 0 | - | 4.56 | 51,963 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 709,629 |
| Notable People of WWII | 0 | - | 4.53 | 86,122 |
| WWII Trivia #2 | 0 | - | 4.52 | 104,441 |
| World War I Quiz | 0 | - | 4.78 | 101,667 |
| WWI A-Z | 0 | - | 4.51 | 38,535 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 146,443 |
| Famous Explorers | 0 | - | 4.58 | 36,301 |
| Famous Empires by Description | 0 | - | 4.73 | 118,867 |
| Answers by Time Period | 0 | - | 4.64 | 55,805 |
