| 19th Century A-Z | 0 | - | 4.77 | 47,235 |
| 18th Century A-Z | 0 | - | 4.54 | 43,120 |
| 16th Century A-Z | 0 | - | 4.58 | 24,862 |
| 14th Century A-Z | 0 | - | 4.41 | 24,335 |
| 17th Century A-Z | 0 | - | 4.78 | 34,600 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,232 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,170 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,931 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,812 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,288 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 180,244 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,636 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 236,381 |
| Name an Official Language A-Z | 0 | - | 4.91 | 175,744 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,164 |
| Empires A-Z | 0 | - | 4.52 | 45,101 |
| History by Letter - A | 0 | - | 4.51 | 152,842 |
| History by Letter - B | 0 | - | 4.45 | 172,081 |
| History by Letter - C | 0 | - | 4.70 | 171,360 |
| History by Letter - E | 0 | - | 4.51 | 140,509 |
| History by Letter - G | 0 | - | 4.46 | 122,032 |
| History by Letter - H | 0 | - | 4.45 | 136,490 |
| History by Letter - J | 0 | - | 4.51 | 153,934 |
| History by Letter - N | 0 | - | 4.45 | 104,027 |
| History by Letter - S | 0 | - | 4.47 | 94,319 |
| History by Letter - W | 0 | - | 4.45 | 109,338 |
| History by Letter - M | 0 | - | 4.54 | 119,784 |
| History by Letter - K | 0 | - | 4.50 | 101,305 |
| History by Letter - L | 0 | - | 4.50 | 112,026 |
| History by Letter - I | 0 | - | 4.46 | 104,165 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 130,021 |
| Geography by Letter - T | 0 | - | 4.84 | 153,737 |
| People in History A-Z #1 | 0 | - | 4.63 | 98,945 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,065 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,151 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 67,948 |
| Islands A-Z | 0 | - | 4.46 | 122,682 |
| Human Body A-Z | 0 | - | 4.51 | 129,053 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 35,425 |
| Animals A-Z #1 | 0 | - | 4.41 | 93,261 |
| Africa A-Z | 0 | - | 4.57 | 46,570 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.69 | 57,594 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,037 |
| History by Letter - D | 0 | - | 4.39 | 137,538 |
| History by Letter - F | 0 | - | 4.18 | 114,184 |
| History by Letter - O | 0 | - | 4.32 | 99,462 |
| History by Letter - P | 0 | - | 4.39 | 107,809 |
| History by Letter - Q | 0 | - | 4.34 | 80,303 |
| History by Letter - R | 0 | - | 4.26 | 122,143 |
| History by Letter - T | 0 | - | 4.39 | 105,234 |
| History by Letter - U | 0 | - | 4.19 | 100,754 |
| History by Letter - V | 0 | - | 4.27 | 80,731 |
| History by Letter - Y | 0 | - | 4.27 | 87,246 |
| History by Letter - Z | 0 | - | 4.20 | 77,015 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,222 |
| History Containing the Letter X | 0 | - | 4.47 | 27,025 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 82,082 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 107,777 |
| Middle East A-Z | 0 | - | 4.47 | 45,976 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,316 |
| Military History A-Z | 0 | - | 4.20 | 21,139 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,997 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,324 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,925 |
| Double Letters A-Z | 0 | - | 4.51 | 27,136 |
| World Cities A-Z by Clue #2 | 0 | - | 4.40 | 58,902 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,269 |
| Canada A-Z | 0 | - | 4.73 | 32,776 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,373 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,663 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,731 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,649 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,588 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,859 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,599 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,013 |
| NATO Military Alphabet | 0 | - | 4.98 | 558,539 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 801,371 |
| Religion A-Z #2 | 0 | - | 4.41 | 36,970 |
| Geography by Letter - A | 0 | - | 4.74 | 211,480 |
| Geography by Letter - B | 0 | - | 4.56 | 184,534 |
| Geography by Letter - H | 0 | - | 4.69 | 150,235 |
| Geography by Letter - C | 0 | - | 4.47 | 158,620 |
| Geography by Letter - D | 0 | - | 4.50 | 150,457 |
| Geography by Letter - E | 0 | - | 4.42 | 147,540 |
| Geography by Letter - I | 0 | - | 4.42 | 121,966 |
| Geography by Letter - K | 0 | - | 4.53 | 118,133 |
| Geography by Letter - L | 0 | - | 4.43 | 148,468 |
| Geography by Letter - M | 0 | - | 4.49 | 118,593 |
| Geography by Letter - N | 0 | - | 4.51 | 127,153 |
| Geography by Letter - P | 0 | - | 4.47 | 175,965 |
| Geography by Letter - R | 0 | - | 4.43 | 131,553 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 140,483 |
| Geography by Letter - U | 0 | - | 4.53 | 143,002 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 58,126 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,615 |
| American Football A-Z | 0 | - | 4.26 | 14,502 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,080 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,286 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,878 |
| Switzerland A-Z | 0 | - | 4.45 | 25,621 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,340 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,549 |
| Movies that Start with G | 0 | - | 4.49 | 68,472 |
| Movies that Start with I | 0 | - | 4.41 | 65,118 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,085 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,572 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,563 |
| Empires by Maps | 0 | - | 4.98 | 119,988 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,965 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,174 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,702 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,612 |
| WWI... or WWII? | 0 | - | 4.85 | 141,910 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,960 |
| Name the War | 0 | - | 4.37 | 201,465 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,521 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,013 |
| Famous Families #1 | 0 | - | 4.20 | 83,565 |
| Names for Warriors | 0 | - | 4.40 | 36,903 |
| Famous Firsts #2 | 0 | - | 4.01 | 80,999 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,331 |
| 2010s Decade Quiz | 0 | - | 4.53 | 102,224 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,334 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,449 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,669 |
| Countries by Military Spending | 0 | - | 4.93 | 177,378 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,909 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 120,427 |
| Animals that Start with L | 0 | - | 4.47 | 101,784 |
| Animals that Start with P | 0 | - | 4.45 | 86,024 |
| Animals that Start with S | 0 | - | 4.49 | 87,226 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,280 |
| Geography by Letter on the World Map - C | 0 | - | 4.79 | 117,358 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,235 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,330 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,123 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,313,978 |
| Disney A-Z | 0 | - | 4.37 | 86,975 |
| Literature by Letter - A | 0 | - | 4.23 | 31,945 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,182 |
| Companies A-Z | 0 | - | 4.30 | 42,683 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,610 |
| Geography by Letter - G | 0 | - | 4.35 | 126,227 |
| Geography by Letter - F | 0 | - | 4.27 | 137,794 |
| Geography by Letter - J | 0 | - | 4.34 | 122,858 |
| Geography by Letter - O | 0 | - | 4.37 | 129,696 |
| Geography by Letter - V | 0 | - | 4.39 | 121,688 |
| Geography by Letter - W | 0 | - | 4.39 | 114,809 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,459 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,624 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,438 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,232 |
| Video Games A-Z | 0 | - | 4.08 | 38,924 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,222 |
| South America A-Z | 0 | - | 4.13 | 10,894 |
| Movies that Start with A | 0 | - | 4.13 | 61,830 |
| Movies that Start with C | 0 | - | 4.30 | 61,798 |
| Movies that Start with B | 0 | - | 4.36 | 85,158 |
| Movies that Start with D | 0 | - | 4.34 | 68,396 |
| Movies that Start with E | 0 | - | 4.13 | 68,328 |
| Movies that Start with J | 0 | - | 4.18 | 76,115 |
| Movies that Start with L | 0 | - | 4.16 | 60,382 |
| Movies that Start with M | 0 | - | 4.28 | 48,199 |
| Movies that Start with N | 0 | - | 4.02 | 41,229 |
| Movies that Start with P | 0 | - | 4.25 | 54,130 |
| Movies that Start with R | 0 | - | 4.17 | 46,609 |
| Movies that Start with W | 0 | - | 4.07 | 44,243 |
| Movies that Start with T | 0 | - | 4.34 | 49,264 |
| Movies that Start with S | 0 | - | 4.35 | 56,436 |
| Movies that Start with F | 0 | - | 4.13 | 68,809 |
| Music by Letter - F | 0 | - | 4.48 | 26,972 |
| Music by Letter - A | 0 | - | 4.61 | 31,342 |
| Brand Logos That Start With B | 0 | - | 4.38 | 59,839 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,373 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,537 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,944 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,420 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,194 |
| Metals of Antiquity | 0 | - | 4.95 | 93,319 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,590 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,686 |
| Notable People of WWII | 0 | - | 4.53 | 85,844 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,870 |
| World War I Quiz | 0 | - | 4.78 | 101,145 |
| WWI A-Z | 0 | - | 4.50 | 38,272 |
| Oldest Things | 0 | - | 3.92 | 65,644 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,811 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,632 |
| 1970s Decade Quiz | 0 | - | 4.20 | 52,847 |
| 2000s Decade Quiz | 0 | - | 4.23 | 121,424 |
| 1980s Decade Quiz | 0 | - | 4.38 | 77,086 |
| 1850s Decade Quiz | 0 | - | 4.42 | 35,155 |
| 1790s Decade Quiz | 0 | - | 4.55 | 33,603 |
| 1800s Decade Quiz | 0 | - | 4.47 | 31,895 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,195 |
| Star Wars A-Z | 0 | - | 4.46 | 88,045 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,867 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,075 |
| Musical Acts by Letter - J | 0 | - | 4.17 | 77,414 |
