| People in History A-Z #2 | 0 | - | 4.47 | 55,246 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,282 |
| Empires A-Z | 0 | - | 4.52 | 45,311 |
| People in History A-Z #5 | 0 | - | 4.09 | 32,020 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,847 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,173 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,610 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,918 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,427 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 180,841 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 73,192 |
| Name an Official Language A-Z | 0 | - | 4.91 | 176,423 |
| 20th Century A-Z | 0 | - | 4.50 | 53,858 |
| 19th Century A-Z | 0 | - | 4.77 | 47,384 |
| 18th Century A-Z | 0 | - | 4.54 | 43,249 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,094 |
| History by Letter - A | 0 | - | 4.51 | 153,507 |
| History by Letter - B | 0 | - | 4.45 | 172,815 |
| History by Letter - C | 0 | - | 4.70 | 172,115 |
| History by Letter - E | 0 | - | 4.51 | 141,101 |
| History by Letter - G | 0 | - | 4.46 | 122,554 |
| History by Letter - H | 0 | - | 4.45 | 137,192 |
| History by Letter - J | 0 | - | 4.51 | 154,567 |
| History by Letter - N | 0 | - | 4.45 | 104,415 |
| History by Letter - S | 0 | - | 4.47 | 94,721 |
| History by Letter - W | 0 | - | 4.45 | 109,926 |
| History by Letter - M | 0 | - | 4.54 | 120,232 |
| History by Letter - K | 0 | - | 4.50 | 101,707 |
| History by Letter - L | 0 | - | 4.50 | 112,487 |
| History by Letter - I | 0 | - | 4.46 | 104,748 |
| Religion A-Z #2 | 0 | - | 4.41 | 37,057 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,440 |
| Geography A-Z #2 | 0 | - | 4.46 | 53,024 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,437 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,700 |
| 16th Century A-Z | 0 | - | 4.58 | 24,958 |
| 15th Century A-Z | 0 | - | 4.49 | 23,971 |
| 14th Century A-Z | 0 | - | 4.41 | 24,444 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 154,371 |
| Geography by Letter - T | 0 | - | 4.84 | 154,567 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,419 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,515 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,724 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 68,491 |
| Islands A-Z | 0 | - | 4.46 | 126,114 |
| World Cities A-Z by Clue #2 | 0 | - | 4.41 | 59,348 |
| Human Body A-Z | 0 | - | 4.51 | 129,437 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 42,621 |
| Africa A-Z | 0 | - | 4.57 | 46,709 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.70 | 58,035 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,397 |
| History by Letter - D | 0 | - | 4.40 | 138,234 |
| History by Letter - F | 0 | - | 4.18 | 114,811 |
| History by Letter - O | 0 | - | 4.32 | 99,816 |
| History by Letter - P | 0 | - | 4.36 | 108,180 |
| History by Letter - Q | 0 | - | 4.34 | 80,576 |
| History by Letter - R | 0 | - | 4.26 | 122,537 |
| History by Letter - T | 0 | - | 4.39 | 105,579 |
| History by Letter - U | 0 | - | 4.19 | 101,092 |
| History by Letter - V | 0 | - | 4.27 | 81,023 |
| History by Letter - Y | 0 | - | 4.27 | 87,541 |
| History by Letter - Z | 0 | - | 4.20 | 77,275 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,296 |
| History Containing the Letter X | 0 | - | 4.47 | 27,103 |
| Disney A-Z | 0 | - | 4.37 | 87,317 |
| Companies A-Z | 0 | - | 4.30 | 42,733 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,687 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 82,636 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 108,450 |
| Video Games A-Z | 0 | - | 4.05 | 39,122 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,331 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.46 | 44,451 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,256 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,621 |
| Military History A-Z | 0 | - | 4.20 | 21,199 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.41 | 30,761 |
| Double Letters A-Z | 0 | - | 4.51 | 27,182 |
| Animals A-Z #1 | 0 | - | 4.40 | 93,787 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,454 |
| Canada A-Z | 0 | - | 4.73 | 32,906 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 237,891 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,534 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,953 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,771 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,732 |
| History Ending in Z | 0 | - | 4.35 | 13,560 |
| A to Z: Musical Terms #2 | 0 | - | 4.08 | 11,074 |
| Geography A-Z #4 | 0 | - | 4.36 | 25,949 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,477 |
| People Depicted in Paintings | 0 | - | 4.55 | 44,737 |
| 17th Century A-Z | 0 | - | 4.78 | 34,697 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,745 |
| NATO Military Alphabet | 0 | - | 4.98 | 562,079 |
| Geography by Letter - A | 0 | - | 4.74 | 212,271 |
| Geography by Letter - B | 0 | - | 4.56 | 185,288 |
| Geography by Letter - H | 0 | - | 4.69 | 150,859 |
| Geography by Letter - C | 0 | - | 4.48 | 159,281 |
| Geography by Letter - D | 0 | - | 4.50 | 151,293 |
| Geography by Letter - E | 0 | - | 4.42 | 148,134 |
| Geography by Letter - I | 0 | - | 4.42 | 122,424 |
| Geography by Letter - K | 0 | - | 4.54 | 118,782 |
| Geography by Letter - L | 0 | - | 4.44 | 149,213 |
| Geography by Letter - M | 0 | - | 4.49 | 119,072 |
| Geography by Letter - N | 0 | - | 4.51 | 127,619 |
| Geography by Letter - P | 0 | - | 4.47 | 176,511 |
| Geography by Letter - R | 0 | - | 4.43 | 132,196 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 141,040 |
| Geography by Letter - U | 0 | - | 4.53 | 143,560 |
| Asian Geography By Letter - K | 0 | - | 4.75 | 58,256 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,720 |
| Movies that Start with G | 0 | - | 4.49 | 68,700 |
| Movies that Start with I | 0 | - | 4.41 | 65,296 |
| WWII A-Z #1 | 0 | - | 4.73 | 103,164 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,776 |
| Famous Battles Quiz | 0 | - | 4.21 | 49,054 |
| Name the War | 0 | - | 4.37 | 202,465 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,588 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,333 |
| Famous Families #1 | 0 | - | 4.20 | 83,670 |
| Names for Warriors | 0 | - | 4.40 | 36,995 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,326 |
| American Football A-Z | 0 | - | 4.26 | 14,543 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,129 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,243 |
| Empires by Maps | 0 | - | 4.98 | 121,121 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,551 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,617 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,867 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 53,930 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,495 |
| Countries by Military Spending | 0 | - | 4.93 | 178,541 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,320,991 |
| Classic Novels by Plot #2 | 0 | - | 4.86 | 38,373 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 121,282 |
| Animals that Start with L | 0 | - | 4.47 | 102,292 |
| Animals that Start with P | 0 | - | 4.45 | 86,339 |
| Animals that Start with S | 0 | - | 4.49 | 87,543 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,778 |
| Geography by Letter on the World Map - C | 0 | - | 4.77 | 118,170 |
| Metals of Antiquity | 0 | - | 4.95 | 93,664 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,911 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,422 |
| WWI... or WWII? | 0 | - | 4.85 | 142,754 |
| Oldest Things | 0 | - | 3.92 | 65,681 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,838 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,870 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,186 |
| Years in History #1 - Multiple Choice | 0 | - | 4.82 | 70,450 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,315 |
| Brand Logos That Start With D | 0 | - | 4.36 | 61,860 |
| Brand Logos That Start With C | 0 | - | 4.20 | 49,890 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,522 |
| Brand Logos That Start With M | 0 | - | 4.40 | 63,170 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,956 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,834 |
| Literature by Letter - A | 0 | - | 4.24 | 32,255 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,357 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,284 |
| Geography by Letter - G | 0 | - | 4.33 | 126,741 |
| Geography by Letter - F | 0 | - | 4.28 | 138,453 |
| Geography by Letter - J | 0 | - | 4.35 | 123,334 |
| Geography by Letter - O | 0 | - | 4.37 | 130,163 |
| Geography by Letter - V | 0 | - | 4.39 | 122,193 |
| Geography by Letter - W | 0 | - | 4.39 | 115,190 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,889 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,937 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,811 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,320 |
| Middle East A-Z | 0 | - | 4.47 | 46,173 |
| South America A-Z | 0 | - | 4.13 | 10,929 |
| Movies that Start with A | 0 | - | 4.13 | 62,035 |
| Movies that Start with C | 0 | - | 4.30 | 62,023 |
| Movies that Start with B | 0 | - | 4.36 | 85,587 |
| Movies that Start with D | 0 | - | 4.34 | 68,577 |
| Movies that Start with E | 0 | - | 4.13 | 68,510 |
| Movies that Start with J | 0 | - | 4.18 | 76,303 |
| Movies that Start with L | 0 | - | 4.16 | 60,524 |
| Movies that Start with M | 0 | - | 4.28 | 48,329 |
| Movies that Start with N | 0 | - | 4.02 | 41,330 |
| Movies that Start with P | 0 | - | 4.25 | 54,228 |
| Movies that Start with R | 0 | - | 4.17 | 46,737 |
| Movies that Start with W | 0 | - | 4.07 | 44,325 |
| Movies that Start with T | 0 | - | 4.34 | 49,394 |
| Movies that Start with S | 0 | - | 4.35 | 56,568 |
| Movies that Start with F | 0 | - | 4.13 | 68,993 |
| Music by Letter - F | 0 | - | 4.48 | 27,065 |
| Music by Letter - A | 0 | - | 4.61 | 31,459 |
| Influential Women in History | 0 | - | 4.42 | 36,153 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,309 |
| Cradles of Civilization | 0 | - | 4.46 | 40,112 |
| Materials From History #1 | 0 | - | 4.56 | 51,887 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 708,917 |
| Notable People of WWII | 0 | - | 4.53 | 86,055 |
| WWII Trivia #2 | 0 | - | 4.52 | 104,349 |
| World War I Quiz | 0 | - | 4.78 | 101,501 |
| WWI A-Z | 0 | - | 4.51 | 38,465 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 146,280 |
| Famous Explorers | 0 | - | 4.58 | 36,272 |
| Famous Empires by Description | 0 | - | 4.73 | 118,736 |
| Answers by Time Period | 0 | - | 4.64 | 55,734 |
