| 16th Century A-Z | 0 | - | 4.53 | 15,801 |
| 18th Century A-Z | 0 | - | 4.60 | 31,376 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 139,498 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 180,221 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 161,057 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 175,035 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 285,674 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 166,238 |
| 17th Century A-Z | 0 | - | 4.62 | 23,949 |
| 15th Century A-Z | 0 | - | 4.35 | 14,929 |
| 14th Century A-Z | 0 | - | 4.32 | 15,259 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 212,497 |
| Name an Official Language A-Z | 0 | - | 4.91 | 133,406 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 108,654 |
| Empires A-Z | 0 | - | 4.47 | 39,436 |
| History by Letter - A | 0 | - | 4.50 | 137,393 |
| History by Letter - B | 0 | - | 4.48 | 154,771 |
| History by Letter - C | 0 | - | 4.76 | 152,212 |
| History by Letter - E | 0 | - | 4.50 | 126,266 |
| History by Letter - G | 0 | - | 4.48 | 109,586 |
| History by Letter - H | 0 | - | 4.42 | 122,312 |
| History by Letter - J | 0 | - | 4.49 | 138,764 |
| History by Letter - N | 0 | - | 4.47 | 93,258 |
| History by Letter - S | 0 | - | 4.46 | 84,013 |
| History by Letter - W | 0 | - | 4.44 | 97,404 |
| History by Letter - M | 0 | - | 4.55 | 108,297 |
| History by Letter - K | 0 | - | 4.48 | 91,366 |
| History by Letter - L | 0 | - | 4.47 | 101,210 |
| History by Letter - I | 0 | - | 4.51 | 94,195 |
| WWII A-Z #1 | 0 | - | 4.81 | 92,608 |
| Geography by Letter - T | 0 | - | 4.82 | 120,196 |
| People in History A-Z #1 | 0 | - | 4.64 | 90,270 |
| People in History A-Z #2 | 0 | - | 4.46 | 49,855 |
| People in History A-Z #3 | 0 | - | 4.47 | 42,108 |
| World Cities A-Z #1 | 0 | - | 4.53 | 58,722 |
| Islands A-Z | 0 | - | 4.45 | 104,166 |
| World Cities A-Z #2 | 0 | - | 4.46 | 51,437 |
| Human Body A-Z | 0 | - | 4.48 | 107,713 |
| Africa A-Z | 0 | - | 4.54 | 43,553 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.70 | 53,539 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.66 | 42,120 |
| History by Letter - D | 0 | - | 4.34 | 124,859 |
| History by Letter - F | 0 | - | 4.17 | 103,327 |
| History by Letter - O | 0 | - | 4.28 | 90,400 |
| History by Letter - P | 0 | - | 4.37 | 97,510 |
| History by Letter - Q | 0 | - | 4.35 | 73,469 |
| History by Letter - R | 0 | - | 4.22 | 111,785 |
| History by Letter - T | 0 | - | 4.40 | 95,699 |
| History by Letter - U | 0 | - | 4.19 | 91,357 |
| History by Letter - V | 0 | - | 4.27 | 74,079 |
| History by Letter - Y | 0 | - | 4.28 | 80,373 |
| History by Letter - Z | 0 | - | 4.20 | 71,227 |
| The 3rd and 4th Century | 0 | - | 4.53 | 19,658 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 67,761 |
| Geography by Letter on the World Map - A | 0 | - | 4.80 | 90,462 |
| Geography by Letter on the World Map - C | 0 | - | 4.84 | 101,515 |
| Middle East A-Z | 0 | - | 4.45 | 42,864 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.43 | 41,110 |
| Military History A-Z | 0 | - | 4.19 | 19,418 |
| Famous Firsts #1 | 0 | - | 4.42 | 65,609 |
| Time Magazine Person of the Year | 0 | - | 4.52 | 65,743 |
| Invasions | 0 | - | 4.70 | 88,826 |
| Double Letters A-Z | 0 | - | 4.49 | 25,792 |
| Asian Cities A-Z | 0 | - | 4.51 | 30,098 |
| Animals A-Z #1 | 0 | - | 4.36 | 86,021 |
| Animals A-Z #2 | 0 | - | 4.12 | 62,793 |
| Normandy D-Day Beaches | 0 | - | 4.82 | 36,347 |
| Territory Changes in World War I | 0 | - | 4.87 | 39,849 |
| Same Start and End Letter - History #1 | 0 | - | 4.12 | 23,303 |
| Same Start and End Letter - History #2 | 0 | - | 4.08 | 22,964 |
| People Depicted in Paintings | 0 | - | 4.55 | 40,898 |
| WWII A-Z #2 | 0 | - | 4.48 | 49,648 |
| Famous Empires in History | 0 | - | 4.82 | 102,136 |
| People in History A-Z #5 | 0 | - | 4.10 | 29,862 |
| People in History A-Z #4 | 0 | - | 4.12 | 21,273 |
| Brand Logos That Start with A | 0 | - | 4.52 | 54,978 |
| Brand Logos That Start With B | 0 | - | 4.46 | 47,224 |
| Brand Logos That Start With M | 0 | - | 4.41 | 47,211 |
| NATO Military Alphabet | 0 | - | 4.98 | 483,413 |
| Disney A-Z | 0 | - | 4.41 | 77,384 |
| Geography by Letter - A | 0 | - | 4.66 | 190,213 |
| Geography by Letter - B | 0 | - | 4.56 | 162,972 |
| Geography by Letter - H | 0 | - | 4.73 | 131,997 |
| Geography by Letter - C | 0 | - | 4.49 | 140,099 |
| Geography by Letter - D | 0 | - | 4.47 | 133,826 |
| Geography by Letter - I | 0 | - | 4.43 | 108,653 |
| Geography by Letter - K | 0 | - | 4.53 | 104,480 |
| Geography by Letter - L | 0 | - | 4.45 | 132,791 |
| Geography by Letter - M | 0 | - | 4.47 | 102,291 |
| Geography by Letter - N | 0 | - | 4.52 | 103,956 |
| Geography by Letter - P | 0 | - | 4.43 | 150,124 |
| Geography by Letter - S #1 | 0 | - | 4.78 | 113,428 |
| Geography by Letter - U | 0 | - | 4.55 | 115,964 |
| Geography by Letter - W | 0 | - | 4.43 | 94,909 |
| Asian Geography By Letter - K | 0 | - | 4.76 | 54,493 |
| American Football A-Z | 0 | - | 4.27 | 13,707 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 16,088 |
| A to Z: Musical Terms | 0 | - | 4.42 | 37,395 |
| Geography A-Z #2 | 0 | - | 4.46 | 49,028 |
| Canada A-Z | 0 | - | 4.66 | 30,437 |
| Geography A-Z #5 | 0 | - | 4.41 | 34,554 |
| Geography A-Z #1 | 0 | - | 4.55 | 65,575 |
| Movies that Start with G | 0 | - | 4.50 | 64,131 |
| Former Countries by Territory Map | 0 | - | 4.96 | 84,918 |
| Empires by Maps | 0 | - | 4.98 | 92,922 |
| Art Works Picture Quiz #1 | 0 | - | 4.49 | 96,375 |
| Art Works Picture Quiz #2 | 0 | - | 4.45 | 85,863 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 45,860 |
| Famous Battles Quiz | 0 | - | 4.24 | 46,529 |
| Name the War Quiz | 0 | - | 4.39 | 189,236 |
| Famous U.S. Generals | 0 | - | 4.24 | 36,891 |
| Religions by Country of Origin Quiz | 0 | - | 4.28 | 72,330 |
| Famous Families #1 | 0 | - | 4.25 | 79,171 |
| Names for Warriors | 0 | - | 4.39 | 34,446 |
| Famous Firsts #2 | 0 | - | 4.01 | 78,480 |
| Countries by Military Spending | 0 | - | 4.93 | 157,880 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.90 | 96,551 |
| Animals that Start with L | 0 | - | 4.43 | 93,462 |
| Animals that Start with P | 0 | - | 4.41 | 79,330 |
| Animals that Start with S | 0 | - | 4.49 | 79,983 |
| Geography by Letter on the World Map - B | 0 | - | 4.50 | 77,554 |
| Ethnic Groups A-Z | 0 | - | 4.56 | 37,912 |
| Space Exploration Trivia | 0 | - | 4.36 | 33,389 |
| Brand Logos That Start With D | 0 | - | 4.31 | 48,436 |
| Brand Logos That Start With C | 0 | - | 4.12 | 39,651 |
| Brand Logos That Start With L | 0 | - | 4.38 | 46,211 |
| Brand Logos That Start With S | 0 | - | 4.34 | 43,610 |
| 100 Most Common English Words | 0 | - | 4.91 | 1,160,502 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.41 | 13,866 |
| Companies A-Z | 0 | - | 4.30 | 41,309 |
| Religion A-Z #1 | 0 | - | 4.25 | 44,296 |
| Religion A-Z #2 | 0 | - | 4.48 | 24,598 |
| Geography by Letter - E | 0 | - | 4.39 | 131,539 |
| Geography by Letter - G | 0 | - | 4.35 | 111,917 |
| Geography by Letter - F | 0 | - | 4.26 | 122,686 |
| Geography by Letter - J | 0 | - | 4.36 | 109,495 |
| Geography by Letter - O | 0 | - | 4.37 | 107,170 |
| Geography by Letter - R | 0 | - | 4.41 | 102,352 |
| Geography by Letter - V | 0 | - | 4.37 | 94,215 |
| Geography by Letter - Y | 0 | - | 4.37 | 90,350 |
| Geography by Letter - Z | 0 | - | 4.04 | 61,778 |
| Geography by Letter - Q | 0 | - | 4.33 | 50,783 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.19 | 33,072 |
| The Americas Geography by Letter - B | 0 | - | 4.50 | 48,750 |
| The Americas Geography by Letter - S | 0 | - | 4.56 | 41,442 |
| Video Games A-Z | 0 | - | 4.04 | 35,010 |
| Geography A-Z #3 | 0 | - | 4.21 | 36,523 |
| Switzerland A-Z | 0 | - | 4.40 | 18,345 |
| South America A-Z | 0 | - | 4.10 | 9,979 |
| Movies that Start with A | 0 | - | 4.09 | 57,996 |
| Movies that Start with C | 0 | - | 4.29 | 57,234 |
| Movies that Start with B | 0 | - | 4.35 | 79,739 |
| Movies that Start with D | 0 | - | 4.35 | 65,045 |
| Movies that Start with E | 0 | - | 4.19 | 64,909 |
| Movies that Start with I | 0 | - | 4.40 | 61,150 |
| Movies that Start with J | 0 | - | 4.21 | 72,069 |
| Movies that Start with L | 0 | - | 4.16 | 57,405 |
| Movies that Start with M | 0 | - | 4.26 | 45,755 |
| Movies that Start with N | 0 | - | 4.05 | 38,961 |
| Movies that Start with P | 0 | - | 4.24 | 51,690 |
| Movies that Start with R | 0 | - | 4.13 | 43,417 |
| Movies that Start with W | 0 | - | 4.04 | 42,285 |
| Movies that Start with T | 0 | - | 4.36 | 46,534 |
| Movies that Start with S | 0 | - | 4.37 | 53,425 |
| Movies that Start with F | 0 | - | 4.15 | 65,504 |
| Music by Letter - F | 0 | - | 4.44 | 24,623 |
| Music by Letter - A | 0 | - | 4.60 | 28,644 |
| Google What's the Difference? - History | 0 | - | 4.21 | 42,993 |
| Metals of Antiquity | 0 | - | 4.94 | 84,959 |
| Mythical Creatures Quiz #1 | 0 | - | 4.91 | 652,473 |
| Art Works Picture Quiz #3 | 0 | - | 4.38 | 40,984 |
| Notable People of WWII | 0 | - | 4.52 | 79,696 |
| WWII Trivia #2 | 0 | - | 4.50 | 85,933 |
| World War I Quiz | 0 | - | 4.79 | 91,801 |
| WWI A-Z | 0 | - | 4.47 | 35,139 |
| Oldest Things | 0 | - | 3.96 | 64,493 |
| Famous Homes - Who Lived There? | 0 | - | 4.06 | 26,147 |
| Famous Firsts #3 - The United States | 0 | - | 4.17 | 13,257 |
| 2012 Year in Review | 0 | - | 4.03 | 45,144 |
| 2011 Year in Review | 0 | - | 4.16 | 41,063 |
| 2013 Year in Review | 0 | - | 4.32 | 39,510 |
| 1970s Decade Quiz | 0 | - | 4.16 | 48,863 |
| 2000s Decade Quiz | 0 | - | 4.19 | 101,234 |
| 1980s Decade Quiz | 0 | - | 4.34 | 70,682 |
| 1990s Decade Quiz | 0 | - | 4.02 | 49,872 |
| Years in History #1 - Multiple Choice | 0 | - | 4.83 | 62,498 |
| Most Common English Verbs - Extreme | 0 | - | 4.95 | 135,246 |
| Top Five Exporting Partners by Country | 0 | - | 4.84 | 61,575 |
| Musical Acts by Letter - J | 0 | - | 4.16 | 63,937 |
| Musical Acts by Letter - M | 0 | - | 4.14 | 76,162 |
| Musical Acts by Letter - N | 0 | - | 4.03 | 55,806 |
| Musical Acts by Letter - P | 0 | - | 4.16 | 52,609 |
| Musical Acts by Letter - R | 0 | - | 4.26 | 69,223 |
| Musical Acts by Letter - A | 0 | - | 4.27 | 71,426 |
| Musical Acts by Letter - B | 0 | - | 4.28 | 62,934 |
| Musical Acts by Letter - C | 0 | - | 4.38 | 51,660 |
| Musical Acts by Letter - D | 0 | - | 4.09 | 45,446 |
| Musical Acts by Letter - E | 0 | - | 4.39 | 53,600 |
| Animals that Start with A | 0 | - | 4.22 | 103,625 |
| Animals that Start with B | 0 | - | 4.31 | 104,769 |
