| Empires A-Z | 0 | - | 4.52 | 45,106 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,242 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,188 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,941 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,827 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,301 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 180,262 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,646 |
| People in History A-Z #1 | 0 | - | 4.63 | 98,951 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,066 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,154 |
| Name an Official Language A-Z | 0 | - | 4.91 | 175,759 |
| 20th Century A-Z | 0 | - | 4.50 | 53,666 |
| 19th Century A-Z | 0 | - | 4.77 | 47,240 |
| 18th Century A-Z | 0 | - | 4.54 | 43,127 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,928 |
| History by Letter - A | 0 | - | 4.51 | 152,859 |
| History by Letter - B | 0 | - | 4.45 | 172,101 |
| History by Letter - C | 0 | - | 4.70 | 171,380 |
| History by Letter - E | 0 | - | 4.51 | 140,527 |
| History by Letter - G | 0 | - | 4.46 | 122,044 |
| History by Letter - H | 0 | - | 4.45 | 136,503 |
| History by Letter - J | 0 | - | 4.51 | 153,949 |
| History by Letter - N | 0 | - | 4.45 | 104,033 |
| History by Letter - S | 0 | - | 4.47 | 94,325 |
| History by Letter - W | 0 | - | 4.45 | 109,393 |
| History by Letter - M | 0 | - | 4.54 | 119,795 |
| History by Letter - K | 0 | - | 4.50 | 101,315 |
| History by Letter - L | 0 | - | 4.50 | 112,035 |
| History by Letter - I | 0 | - | 4.46 | 104,173 |
| Religion A-Z #2 | 0 | - | 4.41 | 36,970 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,288 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,881 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,341 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,553 |
| 16th Century A-Z | 0 | - | 4.58 | 24,864 |
| 15th Century A-Z | 0 | - | 4.49 | 23,898 |
| 14th Century A-Z | 0 | - | 4.41 | 24,337 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 130,042 |
| Geography by Letter - T | 0 | - | 4.84 | 153,762 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 67,966 |
| Islands A-Z | 0 | - | 4.46 | 122,945 |
| Human Body A-Z | 0 | - | 4.51 | 129,058 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 35,432 |
| Animals A-Z #1 | 0 | - | 4.41 | 93,357 |
| Africa A-Z | 0 | - | 4.57 | 46,573 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.69 | 57,602 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,236 |
| History by Letter - D | 0 | - | 4.39 | 137,592 |
| History by Letter - F | 0 | - | 4.18 | 114,196 |
| History by Letter - O | 0 | - | 4.32 | 99,473 |
| History by Letter - P | 0 | - | 4.39 | 107,815 |
| History by Letter - Q | 0 | - | 4.34 | 80,311 |
| History by Letter - R | 0 | - | 4.26 | 122,150 |
| History by Letter - T | 0 | - | 4.39 | 105,241 |
| History by Letter - U | 0 | - | 4.19 | 100,761 |
| History by Letter - V | 0 | - | 4.27 | 80,737 |
| History by Letter - Y | 0 | - | 4.27 | 87,254 |
| History by Letter - Z | 0 | - | 4.20 | 77,027 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,223 |
| History Containing the Letter X | 0 | - | 4.47 | 27,026 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,015 |
| Disney A-Z | 0 | - | 4.37 | 86,984 |
| Companies A-Z | 0 | - | 4.30 | 42,685 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,612 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 82,093 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 107,791 |
| Video Games A-Z | 0 | - | 4.08 | 38,930 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,225 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,319 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,001 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,329 |
| Military History A-Z | 0 | - | 4.20 | 21,140 |
| Double Letters A-Z | 0 | - | 4.51 | 27,136 |
| World Cities A-Z by Clue #2 | 0 | - | 4.40 | 58,914 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,288 |
| Canada A-Z | 0 | - | 4.73 | 32,779 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 236,403 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,799 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,373 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,668 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,731 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,649 |
| History Ending in Z | 0 | - | 4.35 | 13,518 |
| A to Z: Musical Terms #2 | 0 | - | 4.05 | 11,017 |
| Geography A-Z #4 | 0 | - | 4.36 | 25,875 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,169 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,588 |
| 17th Century A-Z | 0 | - | 4.78 | 34,602 |
| NATO Military Alphabet | 0 | - | 4.98 | 558,611 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 801,419 |
| Geography by Letter - A | 0 | - | 4.74 | 211,500 |
| Geography by Letter - B | 0 | - | 4.56 | 184,550 |
| Geography by Letter - H | 0 | - | 4.69 | 150,261 |
| Geography by Letter - C | 0 | - | 4.47 | 158,640 |
| Geography by Letter - D | 0 | - | 4.50 | 150,477 |
| Geography by Letter - E | 0 | - | 4.42 | 147,560 |
| Geography by Letter - I | 0 | - | 4.42 | 121,985 |
| Geography by Letter - K | 0 | - | 4.53 | 118,211 |
| Geography by Letter - L | 0 | - | 4.43 | 148,487 |
| Geography by Letter - M | 0 | - | 4.49 | 118,609 |
| Geography by Letter - N | 0 | - | 4.51 | 127,174 |
| Geography by Letter - P | 0 | - | 4.47 | 175,983 |
| Geography by Letter - R | 0 | - | 4.43 | 131,576 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 140,501 |
| Geography by Letter - U | 0 | - | 4.53 | 143,033 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 58,129 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,617 |
| Movies that Start with G | 0 | - | 4.49 | 68,477 |
| Movies that Start with I | 0 | - | 4.41 | 65,121 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,102 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,590 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,863 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,602 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,960 |
| Name the War | 0 | - | 4.37 | 201,474 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,521 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,019 |
| Famous Families #1 | 0 | - | 4.20 | 83,571 |
| Names for Warriors | 0 | - | 4.40 | 36,904 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,003 |
| Islam A-Z | 0 | - | 4.31 | 24,007 |
| American Football A-Z | 0 | - | 4.26 | 14,507 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,080 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,576 |
| Empires by Maps | 0 | - | 4.98 | 120,014 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,975 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,180 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,703 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,617 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,332 |
| The 15th Century | 0 | - | 4.43 | 51,199 |
| The 14th Century | 0 | - | 4.55 | 49,294 |
| The 13th Century | 0 | - | 4.48 | 43,258 |
| The 11th and 12th Century | 0 | - | 4.53 | 56,100 |
| Ye Olde Professions | 0 | - | 4.67 | 156,594 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,336 |
| 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 | 177,396 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,314,088 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,920 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 120,433 |
| Animals that Start with L | 0 | - | 4.47 | 101,789 |
| Animals that Start with P | 0 | - | 4.45 | 86,028 |
| Animals that Start with S | 0 | - | 4.49 | 87,229 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,292 |
| Geography by Letter on the World Map - C | 0 | - | 4.79 | 117,373 |
| Metals of Antiquity | 0 | - | 4.95 | 93,329 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,597 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,330 |
| WWI... or WWII? | 0 | - | 4.85 | 141,922 |
| Oldest Things | 0 | - | 3.92 | 65,646 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,811 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,632 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,124 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,201 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,882 |
| Literature by Letter - A | 0 | - | 4.23 | 31,959 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,190 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,079 |
| Geography by Letter - G | 0 | - | 4.35 | 126,252 |
| Geography by Letter - F | 0 | - | 4.27 | 137,806 |
| Geography by Letter - J | 0 | - | 4.34 | 122,874 |
| Geography by Letter - O | 0 | - | 4.37 | 129,710 |
| Geography by Letter - V | 0 | - | 4.39 | 121,703 |
| Geography by Letter - W | 0 | - | 4.39 | 114,820 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,464 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,630 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,448 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,233 |
| Middle East A-Z | 0 | - | 4.47 | 45,976 |
| South America A-Z | 0 | - | 4.13 | 10,896 |
| Movies that Start with A | 0 | - | 4.13 | 61,832 |
| Movies that Start with C | 0 | - | 4.30 | 61,802 |
| Movies that Start with B | 0 | - | 4.36 | 85,160 |
| Movies that Start with D | 0 | - | 4.34 | 68,399 |
| Movies that Start with E | 0 | - | 4.13 | 68,328 |
| Movies that Start with J | 0 | - | 4.18 | 76,120 |
| Movies that Start with L | 0 | - | 4.16 | 60,385 |
| Movies that Start with M | 0 | - | 4.28 | 48,200 |
| Movies that Start with N | 0 | - | 4.02 | 41,231 |
| Movies that Start with P | 0 | - | 4.25 | 54,130 |
| Movies that Start with R | 0 | - | 4.17 | 46,611 |
| Movies that Start with W | 0 | - | 4.07 | 44,244 |
| Movies that Start with T | 0 | - | 4.34 | 49,264 |
| Movies that Start with S | 0 | - | 4.35 | 56,437 |
| Movies that Start with F | 0 | - | 4.13 | 68,813 |
| Music by Letter - F | 0 | - | 4.48 | 26,974 |
| Music by Letter - A | 0 | - | 4.61 | 31,343 |
| Brand Logos That Start With B | 0 | - | 4.38 | 59,847 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,386 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,546 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,960 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,431 |
| Influential Women in History | 0 | - | 4.42 | 35,512 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,197 |
| Cradles of Civilization | 0 | - | 4.46 | 39,567 |
| Materials From History #1 | 0 | - | 4.56 | 51,486 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,724 |
