| 19th Century A-Z | 0 | - | 4.82 | 33,999 |
| 18th Century A-Z | 0 | - | 4.60 | 31,334 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 139,408 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 179,847 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 160,924 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 174,732 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 285,451 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 165,984 |
| 17th Century A-Z | 0 | - | 4.62 | 23,904 |
| 15th Century A-Z | 0 | - | 4.35 | 14,898 |
| 14th Century A-Z | 0 | - | 4.32 | 15,233 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 211,840 |
| Name an Official Language A-Z | 0 | - | 4.91 | 133,020 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 108,578 |
| Empires A-Z | 0 | - | 4.47 | 39,342 |
| History by Letter - A | 0 | - | 4.50 | 137,142 |
| History by Letter - B | 0 | - | 4.50 | 154,443 |
| History by Letter - C | 0 | - | 4.76 | 151,832 |
| History by Letter - E | 0 | - | 4.50 | 126,000 |
| History by Letter - G | 0 | - | 4.51 | 109,369 |
| History by Letter - H | 0 | - | 4.42 | 122,034 |
| History by Letter - J | 0 | - | 4.49 | 138,459 |
| History by Letter - N | 0 | - | 4.47 | 93,032 |
| History by Letter - S | 0 | - | 4.46 | 83,831 |
| History by Letter - W | 0 | - | 4.44 | 97,139 |
| History by Letter - M | 0 | - | 4.55 | 107,860 |
| History by Letter - K | 0 | - | 4.48 | 91,185 |
| History by Letter - L | 0 | - | 4.47 | 100,981 |
| History by Letter - I | 0 | - | 4.51 | 94,007 |
| WWII A-Z #1 | 0 | - | 4.81 | 92,397 |
| Geography by Letter - T | 0 | - | 4.81 | 119,236 |
| People in History A-Z #1 | 0 | - | 4.64 | 90,123 |
| People in History A-Z #2 | 0 | - | 4.46 | 49,780 |
| People in History A-Z #3 | 0 | - | 4.47 | 42,051 |
| World Cities A-Z #1 | 0 | - | 4.53 | 58,662 |
| Islands A-Z | 0 | - | 4.45 | 103,608 |
| World Cities A-Z #2 | 0 | - | 4.46 | 51,376 |
| Human Body A-Z | 0 | - | 4.48 | 107,588 |
| Africa A-Z | 0 | - | 4.54 | 43,499 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.70 | 53,432 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.66 | 42,001 |
| Name a Valid Year in History | 0 | - | 4.92 | 51,679 |
| History by Letter - D | 0 | - | 4.34 | 124,622 |
| History by Letter - F | 0 | - | 4.17 | 103,138 |
| History by Letter - O | 0 | - | 4.28 | 90,230 |
| History by Letter - P | 0 | - | 4.37 | 97,318 |
| History by Letter - Q | 0 | - | 4.35 | 73,335 |
| History by Letter - R | 0 | - | 4.24 | 111,584 |
| History by Letter - T | 0 | - | 4.40 | 95,536 |
| History by Letter - U | 0 | - | 4.19 | 91,162 |
| History by Letter - V | 0 | - | 4.27 | 73,943 |
| History by Letter - Y | 0 | - | 4.28 | 80,247 |
| History by Letter - Z | 0 | - | 4.20 | 71,116 |
| The 3rd and 4th Century | 0 | - | 4.53 | 19,626 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 67,474 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 90,085 |
| Geography by Letter on the World Map - C | 0 | - | 4.84 | 101,163 |
| Middle East A-Z | 0 | - | 4.45 | 42,793 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.43 | 41,043 |
| Military History A-Z | 0 | - | 4.19 | 19,381 |
| Famous Firsts #1 | 0 | - | 4.42 | 65,549 |
| Time Magazine Person of the Year | 0 | - | 4.52 | 65,559 |
| Invasions | 0 | - | 4.70 | 88,662 |
| Double Letters A-Z | 0 | - | 4.49 | 25,775 |
| Asian Cities A-Z | 0 | - | 4.51 | 30,068 |
| Animals A-Z #1 | 0 | - | 4.36 | 85,904 |
| Animals A-Z #2 | 0 | - | 4.12 | 62,740 |
| Normandy D-Day Beaches | 0 | - | 4.82 | 36,275 |
| Territory Changes in World War I | 0 | - | 4.87 | 39,724 |
| Same Start and End Letter - History #1 | 0 | - | 4.12 | 23,277 |
| Same Start and End Letter - History #2 | 0 | - | 4.08 | 22,884 |
| People Depicted in Paintings | 0 | - | 4.55 | 40,814 |
| WWII A-Z #2 | 0 | - | 4.48 | 49,554 |
| Famous Empires in History | 0 | - | 4.82 | 101,787 |
| People in History A-Z #5 | 0 | - | 4.10 | 29,837 |
| People in History A-Z #4 | 0 | - | 4.12 | 21,255 |
| Brand Logos That Start with A | 0 | - | 4.52 | 54,595 |
| Brand Logos That Start With B | 0 | - | 4.46 | 46,918 |
| Brand Logos That Start With M | 0 | - | 4.41 | 46,778 |
| NATO Military Alphabet | 0 | - | 4.98 | 482,490 |
| Disney A-Z | 0 | - | 4.41 | 77,195 |
| Geography by Letter - A | 0 | - | 4.66 | 189,616 |
| Geography by Letter - B | 0 | - | 4.56 | 162,361 |
| Geography by Letter - H | 0 | - | 4.73 | 131,547 |
| Geography by Letter - C | 0 | - | 4.49 | 139,603 |
| Geography by Letter - D | 0 | - | 4.47 | 133,379 |
| Geography by Letter - I | 0 | - | 4.43 | 108,313 |
| Geography by Letter - K | 0 | - | 4.53 | 104,039 |
| Geography by Letter - L | 0 | - | 4.45 | 132,138 |
| Geography by Letter - M | 0 | - | 4.46 | 95,328 |
| Geography by Letter - N | 0 | - | 4.52 | 103,440 |
| Geography by Letter - P | 0 | - | 4.43 | 149,632 |
| Geography by Letter - S #1 | 0 | - | 4.78 | 112,881 |
| Geography by Letter - U | 0 | - | 4.55 | 115,423 |
| Geography by Letter - W | 0 | - | 4.43 | 94,527 |
| Asian Geography By Letter - K | 0 | - | 4.76 | 54,331 |
| American Football A-Z | 0 | - | 4.27 | 13,696 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 16,053 |
| A to Z: Musical Terms | 0 | - | 4.42 | 37,310 |
| Geography A-Z #2 | 0 | - | 4.46 | 48,965 |
| Canada A-Z | 0 | - | 4.66 | 30,399 |
| Geography A-Z #5 | 0 | - | 4.41 | 34,502 |
| Geography A-Z #1 | 0 | - | 4.55 | 65,494 |
| Movies that Start with G | 0 | - | 4.50 | 64,013 |
| Former Countries by Territory Map | 0 | - | 4.96 | 84,641 |
| Empires by Maps | 0 | - | 4.98 | 92,420 |
| Art Works Picture Quiz #1 | 0 | - | 4.49 | 96,268 |
| Art Works Picture Quiz #2 | 0 | - | 4.45 | 85,774 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 45,673 |
| Famous Battles Quiz | 0 | - | 4.24 | 46,495 |
| Name the War Quiz | 0 | - | 4.39 | 188,994 |
| Famous U.S. Generals | 0 | - | 4.24 | 36,867 |
| Religions by Country of Origin Quiz | 0 | - | 4.28 | 72,234 |
| Famous Families #1 | 0 | - | 4.25 | 78,919 |
| Names for Warriors | 0 | - | 4.39 | 34,425 |
| Famous Firsts #2 | 0 | - | 4.01 | 78,447 |
| Countries by Military Spending | 0 | - | 4.93 | 157,531 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.90 | 95,983 |
| Animals that Start with L | 0 | - | 4.43 | 93,328 |
| Animals that Start with P | 0 | - | 4.41 | 79,209 |
| Animals that Start with S | 0 | - | 4.49 | 79,853 |
| Geography by Letter on the World Map - B | 0 | - | 4.50 | 77,315 |
| Ethnic Groups A-Z | 0 | - | 4.57 | 37,827 |
| Space Exploration Trivia | 0 | - | 4.36 | 33,339 |
| Brand Logos That Start With D | 0 | - | 4.31 | 48,096 |
| Brand Logos That Start With C | 0 | - | 4.12 | 39,418 |
| Brand Logos That Start With L | 0 | - | 4.38 | 45,815 |
| Brand Logos That Start With S | 0 | - | 4.34 | 43,220 |
| 100 Most Common English Words | 0 | - | 4.91 | 1,157,028 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.41 | 13,848 |
| Companies A-Z | 0 | - | 4.30 | 41,286 |
| Religion A-Z #1 | 0 | - | 4.25 | 44,272 |
| Religion A-Z #2 | 0 | - | 4.48 | 24,537 |
| Geography by Letter - E | 0 | - | 4.39 | 131,101 |
| Geography by Letter - G | 0 | - | 4.35 | 111,542 |
| Geography by Letter - F | 0 | - | 4.26 | 122,280 |
| Geography by Letter - J | 0 | - | 4.36 | 109,037 |
| Geography by Letter - O | 0 | - | 4.37 | 106,734 |
| Geography by Letter - R | 0 | - | 4.40 | 101,728 |
| Geography by Letter - V | 0 | - | 4.37 | 93,453 |
| Geography by Letter - Y | 0 | - | 4.37 | 89,721 |
| Geography by Letter - Z | 0 | - | 4.04 | 61,362 |
| Geography by Letter - Q | 0 | - | 4.33 | 50,459 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.19 | 33,029 |
| The Americas Geography by Letter - B | 0 | - | 4.50 | 48,706 |
| The Americas Geography by Letter - S | 0 | - | 4.55 | 41,411 |
| Video Games A-Z | 0 | - | 4.04 | 34,935 |
| Geography A-Z #3 | 0 | - | 4.21 | 36,470 |
| Switzerland A-Z | 0 | - | 4.40 | 18,310 |
| South America A-Z | 0 | - | 4.10 | 9,960 |
| Movies that Start with A | 0 | - | 4.09 | 57,910 |
| Movies that Start with C | 0 | - | 4.29 | 57,131 |
| Movies that Start with B | 0 | - | 4.35 | 79,627 |
| Movies that Start with D | 0 | - | 4.35 | 64,968 |
| Movies that Start with E | 0 | - | 4.19 | 64,820 |
| Movies that Start with I | 0 | - | 4.40 | 61,064 |
| Movies that Start with J | 0 | - | 4.21 | 71,987 |
| Movies that Start with L | 0 | - | 4.16 | 57,325 |
| Movies that Start with M | 0 | - | 4.26 | 45,699 |
| Movies that Start with N | 0 | - | 4.05 | 38,911 |
| Movies that Start with P | 0 | - | 4.24 | 51,645 |
| Movies that Start with R | 0 | - | 4.13 | 43,339 |
| Movies that Start with W | 0 | - | 4.04 | 42,248 |
| Movies that Start with T | 0 | - | 4.36 | 46,477 |
| Movies that Start with S | 0 | - | 4.37 | 53,357 |
| Movies that Start with F | 0 | - | 4.15 | 65,431 |
| Music by Letter - F | 0 | - | 4.44 | 24,583 |
| Music by Letter - A | 0 | - | 4.60 | 28,595 |
| Google What's the Difference? - History | 0 | - | 4.21 | 42,916 |
| Metals of Antiquity | 0 | - | 4.94 | 84,734 |
| Mythical Creatures Quiz #1 | 0 | - | 4.91 | 651,257 |
| Art Works Picture Quiz #3 | 0 | - | 4.38 | 40,928 |
| Notable People of WWII | 0 | - | 4.52 | 79,590 |
| WWII Trivia #2 | 0 | - | 4.50 | 85,511 |
| World War I Quiz | 0 | - | 4.77 | 91,645 |
| WWI A-Z | 0 | - | 4.47 | 35,062 |
| Oldest Things | 0 | - | 3.96 | 64,460 |
| Famous Homes - Who Lived There? | 0 | - | 4.06 | 26,133 |
| Famous Firsts #3 - The United States | 0 | - | 4.17 | 13,243 |
| 2012 Year in Review | 0 | - | 4.03 | 45,127 |
| 2011 Year in Review | 0 | - | 4.16 | 41,049 |
| 2013 Year in Review | 0 | - | 4.32 | 39,489 |
| 1970s Decade Quiz | 0 | - | 4.16 | 48,778 |
| 2000s Decade Quiz | 0 | - | 4.19 | 101,049 |
| 1980s Decade Quiz | 0 | - | 4.34 | 70,535 |
| 1990s Decade Quiz | 0 | - | 4.02 | 49,771 |
| Years in History #1 - Multiple Choice | 0 | - | 4.83 | 62,355 |
| Most Common English Verbs - Extreme | 0 | - | 4.95 | 134,802 |
| Top Five Exporting Partners by Country | 0 | - | 4.84 | 61,438 |
| Musical Acts by Letter - J | 0 | - | 4.16 | 63,738 |
| Musical Acts by Letter - M | 0 | - | 4.14 | 75,861 |
| Musical Acts by Letter - N | 0 | - | 4.03 | 55,628 |
| Musical Acts by Letter - P | 0 | - | 4.16 | 52,426 |
| Musical Acts by Letter - R | 0 | - | 4.26 | 69,008 |
| Musical Acts by Letter - A | 0 | - | 4.27 | 71,135 |
| Musical Acts by Letter - B | 0 | - | 4.28 | 62,660 |
| Musical Acts by Letter - C | 0 | - | 4.38 | 51,408 |
| Musical Acts by Letter - D | 0 | - | 4.09 | 45,231 |
| Musical Acts by Letter - E | 0 | - | 4.39 | 53,327 |
| Animals that Start with A | 0 | - | 4.21 | 103,508 |
