| People in History A-Z #2 | 0 | - | 4.47 | 55,440 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,422 |
| Empires A-Z | 0 | - | 4.52 | 45,427 |
| People in History A-Z #5 | 0 | - | 4.09 | 32,114 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,063 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,577 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,866 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,845 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,878 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 181,191 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 73,424 |
| Name an Official Language A-Z | 0 | - | 4.91 | 176,862 |
| 20th Century A-Z | 0 | - | 4.50 | 53,960 |
| 19th Century A-Z | 0 | - | 4.77 | 47,448 |
| 18th Century A-Z | 0 | - | 4.54 | 43,303 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,175 |
| History by Letter - A | 0 | - | 4.51 | 153,828 |
| History by Letter - B | 0 | - | 4.45 | 173,208 |
| History by Letter - C | 0 | - | 4.70 | 172,552 |
| History by Letter - E | 0 | - | 4.51 | 141,422 |
| History by Letter - G | 0 | - | 4.46 | 122,841 |
| History by Letter - H | 0 | - | 4.45 | 137,507 |
| History by Letter - J | 0 | - | 4.51 | 154,926 |
| History by Letter - N | 0 | - | 4.45 | 104,751 |
| History by Letter - S | 0 | - | 4.47 | 94,922 |
| History by Letter - W | 0 | - | 4.45 | 110,162 |
| History by Letter - M | 0 | - | 4.54 | 120,638 |
| History by Letter - K | 0 | - | 4.50 | 101,950 |
| History by Letter - L | 0 | - | 4.50 | 112,768 |
| History by Letter - I | 0 | - | 4.46 | 104,978 |
| Religion A-Z #2 | 0 | - | 4.41 | 37,113 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,549 |
| Geography A-Z #2 | 0 | - | 4.46 | 53,123 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,499 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,795 |
| 16th Century A-Z | 0 | - | 4.58 | 25,005 |
| 15th Century A-Z | 0 | - | 4.49 | 24,004 |
| 14th Century A-Z | 0 | - | 4.41 | 24,489 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 155,184 |
| Geography by Letter - T | 0 | - | 4.84 | 155,013 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,465 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,561 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,758 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 75,562 |
| Islands A-Z | 0 | - | 4.46 | 127,260 |
| World Cities A-Z by Clue #2 | 0 | - | 4.41 | 60,059 |
| Human Body A-Z | 0 | - | 4.51 | 129,605 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 42,939 |
| Africa A-Z | 0 | - | 4.57 | 46,756 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.70 | 58,194 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,486 |
| History by Letter - D | 0 | - | 4.40 | 138,528 |
| History by Letter - F | 0 | - | 4.19 | 115,045 |
| History by Letter - O | 0 | - | 4.32 | 100,245 |
| History by Letter - P | 0 | - | 4.36 | 108,425 |
| History by Letter - Q | 0 | - | 4.34 | 80,765 |
| History by Letter - R | 0 | - | 4.26 | 122,769 |
| History by Letter - T | 0 | - | 4.39 | 105,773 |
| History by Letter - U | 0 | - | 4.19 | 101,280 |
| History by Letter - V | 0 | - | 4.27 | 81,185 |
| History by Letter - Y | 0 | - | 4.27 | 87,695 |
| History by Letter - Z | 0 | - | 4.20 | 77,427 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,333 |
| History Containing the Letter X | 0 | - | 4.47 | 27,141 |
| Disney A-Z | 0 | - | 4.37 | 87,463 |
| Companies A-Z | 0 | - | 4.30 | 42,765 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,734 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 82,943 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 108,774 |
| Video Games A-Z | 0 | - | 4.05 | 39,224 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,390 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.46 | 44,538 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,401 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,823 |
| Military History A-Z | 0 | - | 4.20 | 21,236 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.41 | 30,793 |
| Double Letters A-Z | 0 | - | 4.51 | 27,218 |
| Animals A-Z #1 | 0 | - | 4.40 | 93,891 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,510 |
| Canada A-Z | 0 | - | 4.73 | 32,952 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 238,482 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,646 |
| Territory Changes in World War I | 0 | - | 4.88 | 47,139 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,799 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,778 |
| History Ending in Z | 0 | - | 4.35 | 13,591 |
| A to Z: Musical Terms #2 | 0 | - | 4.08 | 11,121 |
| Geography A-Z #4 | 0 | - | 4.36 | 25,998 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,579 |
| People Depicted in Paintings | 0 | - | 4.55 | 44,809 |
| 17th Century A-Z | 0 | - | 4.78 | 34,741 |
| Brand Logos That Start with A | 0 | - | 4.52 | 71,082 |
| NATO Military Alphabet | 0 | - | 4.98 | 563,884 |
| Geography by Letter - A | 0 | - | 4.74 | 212,677 |
| Geography by Letter - B | 0 | - | 4.56 | 185,658 |
| Geography by Letter - H | 0 | - | 4.69 | 151,159 |
| Geography by Letter - C | 0 | - | 4.48 | 159,601 |
| Geography by Letter - D | 0 | - | 4.50 | 151,580 |
| Geography by Letter - E | 0 | - | 4.42 | 148,413 |
| Geography by Letter - I | 0 | - | 4.42 | 122,661 |
| Geography by Letter - K | 0 | - | 4.54 | 119,005 |
| Geography by Letter - L | 0 | - | 4.44 | 149,495 |
| Geography by Letter - M | 0 | - | 4.49 | 119,499 |
| Geography by Letter - N | 0 | - | 4.51 | 127,866 |
| Geography by Letter - P | 0 | - | 4.47 | 176,812 |
| Geography by Letter - R | 0 | - | 4.43 | 132,539 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 141,359 |
| Geography by Letter - U | 0 | - | 4.52 | 143,846 |
| Asian Geography By Letter - K | 0 | - | 4.75 | 58,328 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,759 |
| Movies that Start with G | 0 | - | 4.49 | 68,791 |
| Movies that Start with I | 0 | - | 4.41 | 65,394 |
| WWII A-Z #1 | 0 | - | 4.73 | 103,321 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,860 |
| Famous Battles Quiz | 0 | - | 4.21 | 49,118 |
| Name the War | 0 | - | 4.37 | 202,773 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,630 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,426 |
| Famous Families #1 | 0 | - | 4.20 | 83,721 |
| Names for Warriors | 0 | - | 4.40 | 37,047 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,408 |
| American Football A-Z | 0 | - | 4.26 | 14,552 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,144 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,701 |
| Empires by Maps | 0 | - | 4.98 | 121,803 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,766 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,825 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,939 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 54,091 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,583 |
| Countries by Military Spending | 0 | - | 4.93 | 178,918 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,324,607 |
| Classic Novels by Plot #2 | 0 | - | 4.86 | 38,536 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 121,641 |
| Animals that Start with L | 0 | - | 4.47 | 102,402 |
| Animals that Start with P | 0 | - | 4.45 | 86,450 |
| Animals that Start with S | 0 | - | 4.49 | 87,644 |
| Geography by Letter on the World Map - B | 0 | - | 4.49 | 91,040 |
| Geography by Letter on the World Map - C | 0 | - | 4.77 | 118,469 |
| Metals of Antiquity | 0 | - | 4.95 | 93,867 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,092 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,469 |
| WWI... or WWII? | 0 | - | 4.85 | 143,249 |
| Oldest Things | 0 | - | 3.92 | 65,707 |
| 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 | 15,228 |
| Years in History #1 - Multiple Choice | 0 | - | 4.82 | 70,591 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,574 |
| Brand Logos That Start With D | 0 | - | 4.36 | 62,132 |
| Brand Logos That Start With C | 0 | - | 4.20 | 50,076 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,835 |
| Brand Logos That Start With M | 0 | - | 4.38 | 63,453 |
| Brand Logos That Start With S | 0 | - | 4.37 | 58,211 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 158,407 |
| Literature by Letter - A | 0 | - | 4.24 | 32,333 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,398 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,424 |
| Geography by Letter - G | 0 | - | 4.33 | 126,974 |
| Geography by Letter - F | 0 | - | 4.28 | 138,694 |
| Geography by Letter - J | 0 | - | 4.35 | 123,582 |
| Geography by Letter - O | 0 | - | 4.37 | 130,388 |
| Geography by Letter - V | 0 | - | 4.39 | 122,490 |
| Geography by Letter - W | 0 | - | 4.39 | 115,404 |
| Geography by Letter - Y | 0 | - | 4.39 | 112,099 |
| Geography by Letter - Z | 0 | - | 4.11 | 82,112 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,995 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,367 |
| Middle East A-Z | 0 | - | 4.47 | 46,228 |
| South America A-Z | 0 | - | 4.15 | 10,942 |
| Movies that Start with A | 0 | - | 4.13 | 62,115 |
| Movies that Start with C | 0 | - | 4.30 | 62,104 |
| Movies that Start with B | 0 | - | 4.36 | 85,678 |
| Movies that Start with D | 0 | - | 4.34 | 68,640 |
| Movies that Start with E | 0 | - | 4.13 | 68,579 |
| Movies that Start with J | 0 | - | 4.18 | 76,400 |
| Movies that Start with L | 0 | - | 4.16 | 60,581 |
| Movies that Start with M | 0 | - | 4.28 | 48,380 |
| Movies that Start with N | 0 | - | 4.02 | 41,377 |
| Movies that Start with P | 0 | - | 4.25 | 54,276 |
| Movies that Start with R | 0 | - | 4.17 | 46,796 |
| Movies that Start with W | 0 | - | 4.07 | 44,364 |
| Movies that Start with T | 0 | - | 4.34 | 49,444 |
| Movies that Start with S | 0 | - | 4.35 | 56,621 |
| Movies that Start with F | 0 | - | 4.13 | 69,062 |
| Music by Letter - F | 0 | - | 4.47 | 27,123 |
| Music by Letter - A | 0 | - | 4.61 | 31,515 |
| Influential Women in History | 0 | - | 4.42 | 36,368 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,358 |
| Cradles of Civilization | 0 | - | 4.46 | 40,306 |
| Materials From History #1 | 0 | - | 4.56 | 52,018 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 709,913 |
| Notable People of WWII | 0 | - | 4.53 | 86,187 |
| WWII Trivia #2 | 0 | - | 4.52 | 104,529 |
| World War I Quiz | 0 | - | 4.78 | 102,013 |
| WWI A-Z | 0 | - | 4.51 | 38,581 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 146,537 |
| Famous Explorers | 0 | - | 4.58 | 36,341 |
| Famous Empires by Description | 0 | - | 4.73 | 118,935 |
| Answers by Time Period | 0 | - | 4.64 | 55,838 |
