| People in History A-Z #2 | 0 | - | 4.47 | 55,056 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,147 |
| Empires A-Z | 0 | - | 4.52 | 45,092 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,922 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,218 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,135 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,905 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,777 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,249 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 180,226 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,617 |
| Name an Official Language A-Z | 0 | - | 4.91 | 175,715 |
| 20th Century A-Z | 0 | - | 4.50 | 53,649 |
| 19th Century A-Z | 0 | - | 4.77 | 47,227 |
| 18th Century A-Z | 0 | - | 4.54 | 43,115 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,011 |
| History by Letter - A | 0 | - | 4.51 | 152,816 |
| History by Letter - B | 0 | - | 4.45 | 172,049 |
| History by Letter - C | 0 | - | 4.70 | 171,329 |
| History by Letter - E | 0 | - | 4.51 | 140,486 |
| History by Letter - G | 0 | - | 4.46 | 122,006 |
| History by Letter - H | 0 | - | 4.45 | 136,461 |
| History by Letter - J | 0 | - | 4.51 | 153,912 |
| History by Letter - N | 0 | - | 4.45 | 104,004 |
| History by Letter - S | 0 | - | 4.47 | 94,301 |
| History by Letter - W | 0 | - | 4.45 | 109,255 |
| History by Letter - M | 0 | - | 4.54 | 119,767 |
| History by Letter - K | 0 | - | 4.50 | 101,286 |
| History by Letter - L | 0 | - | 4.50 | 112,010 |
| History by Letter - I | 0 | - | 4.46 | 104,142 |
| Religion A-Z #2 | 0 | - | 4.41 | 36,968 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,284 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,872 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,333 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,540 |
| 16th Century A-Z | 0 | - | 4.58 | 24,853 |
| 15th Century A-Z | 0 | - | 4.49 | 23,892 |
| 14th Century A-Z | 0 | - | 4.41 | 24,329 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 129,997 |
| Geography by Letter - T | 0 | - | 4.84 | 153,698 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,333 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,448 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,667 |
| World Cities A-Z by Clue #1 | 0 | - | 4.50 | 67,929 |
| Islands A-Z | 0 | - | 4.46 | 122,022 |
| Human Body A-Z | 0 | - | 4.51 | 129,041 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 35,413 |
| Animals A-Z #1 | 0 | - | 4.41 | 93,170 |
| Africa A-Z | 0 | - | 4.57 | 46,565 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.69 | 57,566 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,229 |
| History by Letter - D | 0 | - | 4.39 | 137,458 |
| History by Letter - F | 0 | - | 4.18 | 114,166 |
| History by Letter - O | 0 | - | 4.32 | 99,447 |
| History by Letter - P | 0 | - | 4.39 | 107,792 |
| History by Letter - Q | 0 | - | 4.34 | 80,287 |
| History by Letter - R | 0 | - | 4.26 | 122,126 |
| History by Letter - T | 0 | - | 4.39 | 105,221 |
| History by Letter - U | 0 | - | 4.19 | 100,739 |
| History by Letter - V | 0 | - | 4.27 | 80,715 |
| History by Letter - Y | 0 | - | 4.27 | 87,231 |
| History by Letter - Z | 0 | - | 4.20 | 77,000 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,221 |
| History Containing the Letter X | 0 | - | 4.47 | 27,023 |
| Disney A-Z | 0 | - | 4.37 | 86,967 |
| Companies A-Z | 0 | - | 4.30 | 42,682 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,607 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 82,057 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 107,757 |
| Video Games A-Z | 0 | - | 4.08 | 38,919 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,218 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,307 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,988 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,312 |
| Military History A-Z | 0 | - | 4.20 | 21,136 |
| Double Letters A-Z | 0 | - | 4.51 | 27,136 |
| World Cities A-Z by Clue #2 | 0 | - | 4.40 | 58,881 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,239 |
| Canada A-Z | 0 | - | 4.73 | 32,773 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 236,344 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,365 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,650 |
| Same Start and End Letter - History #1 | 0 | - | 4.17 | 24,728 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,642 |
| History Ending in Z | 0 | - | 4.35 | 13,516 |
| A to Z: Musical Terms #2 | 0 | - | 4.05 | 11,016 |
| Geography A-Z #4 | 0 | - | 4.36 | 25,868 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,157 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,583 |
| 17th Century A-Z | 0 | - | 4.78 | 34,595 |
| NATO Military Alphabet | 0 | - | 4.98 | 558,395 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 801,276 |
| Geography by Letter - A | 0 | - | 4.74 | 211,445 |
| Geography by Letter - B | 0 | - | 4.56 | 184,496 |
| Geography by Letter - H | 0 | - | 4.69 | 150,203 |
| Geography by Letter - C | 0 | - | 4.47 | 158,578 |
| Geography by Letter - D | 0 | - | 4.50 | 150,430 |
| Geography by Letter - E | 0 | - | 4.42 | 147,509 |
| Geography by Letter - I | 0 | - | 4.42 | 121,942 |
| Geography by Letter - K | 0 | - | 4.53 | 118,033 |
| Geography by Letter - L | 0 | - | 4.43 | 148,435 |
| Geography by Letter - M | 0 | - | 4.49 | 118,560 |
| Geography by Letter - N | 0 | - | 4.51 | 127,090 |
| Geography by Letter - P | 0 | - | 4.47 | 175,937 |
| Geography by Letter - R | 0 | - | 4.43 | 131,524 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 140,460 |
| Geography by Letter - U | 0 | - | 4.53 | 142,976 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 58,122 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,612 |
| Movies that Start with G | 0 | - | 4.49 | 68,469 |
| Movies that Start with I | 0 | - | 4.41 | 65,109 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,059 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,548 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,845 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,588 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,956 |
| Name the War | 0 | - | 4.37 | 201,447 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,519 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,006 |
| Famous Families #1 | 0 | - | 4.20 | 83,562 |
| Names for Warriors | 0 | - | 4.40 | 36,898 |
| Famous Firsts #2 | 0 | - | 4.01 | 80,993 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.40 | 30,717 |
| American Football A-Z | 0 | - | 4.26 | 14,502 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,080 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,533 |
| Empires by Maps | 0 | - | 4.98 | 119,944 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,954 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,164 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,698 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,606 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,321 |
| Countries by Military Spending | 0 | - | 4.93 | 177,354 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,313,764 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,900 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 120,403 |
| Animals that Start with L | 0 | - | 4.47 | 101,781 |
| Animals that Start with P | 0 | - | 4.45 | 86,018 |
| Animals that Start with S | 0 | - | 4.49 | 87,220 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,259 |
| Geography by Letter on the World Map - C | 0 | - | 4.79 | 117,334 |
| Metals of Antiquity | 0 | - | 4.94 | 93,299 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,578 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,325 |
| WWI... or WWII? | 0 | - | 4.85 | 141,872 |
| Oldest Things | 0 | - | 3.92 | 65,643 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,811 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,626 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,115 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,185 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,833 |
| Literature by Letter - A | 0 | - | 4.23 | 31,940 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,178 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,071 |
| Geography by Letter - G | 0 | - | 4.35 | 126,205 |
| Geography by Letter - F | 0 | - | 4.27 | 137,771 |
| Geography by Letter - J | 0 | - | 4.34 | 122,834 |
| Geography by Letter - O | 0 | - | 4.37 | 129,676 |
| Geography by Letter - V | 0 | - | 4.39 | 121,667 |
| Geography by Letter - W | 0 | - | 4.39 | 114,789 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,442 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,604 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,421 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,229 |
| Middle East A-Z | 0 | - | 4.47 | 45,973 |
| South America A-Z | 0 | - | 4.13 | 10,893 |
| Movies that Start with A | 0 | - | 4.13 | 61,821 |
| Movies that Start with C | 0 | - | 4.30 | 61,793 |
| Movies that Start with B | 0 | - | 4.36 | 85,152 |
| Movies that Start with D | 0 | - | 4.34 | 68,390 |
| Movies that Start with E | 0 | - | 4.13 | 68,322 |
| Movies that Start with J | 0 | - | 4.18 | 76,109 |
| Movies that Start with L | 0 | - | 4.16 | 60,376 |
| Movies that Start with M | 0 | - | 4.28 | 48,194 |
| Movies that Start with N | 0 | - | 4.02 | 41,225 |
| Movies that Start with P | 0 | - | 4.25 | 54,125 |
| Movies that Start with R | 0 | - | 4.17 | 46,603 |
| Movies that Start with W | 0 | - | 4.07 | 44,240 |
| Movies that Start with T | 0 | - | 4.34 | 49,259 |
| Movies that Start with S | 0 | - | 4.35 | 56,431 |
| Movies that Start with F | 0 | - | 4.13 | 68,804 |
| Music by Letter - F | 0 | - | 4.48 | 26,968 |
| Music by Letter - A | 0 | - | 4.61 | 31,337 |
| Brand Logos That Start With B | 0 | - | 4.38 | 59,817 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,354 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,515 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,924 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,404 |
| Influential Women in History | 0 | - | 4.42 | 35,499 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,191 |
| Cradles of Civilization | 0 | - | 4.46 | 39,549 |
| Materials From History #1 | 0 | - | 4.56 | 51,477 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,609 |
| Notable People of WWII | 0 | - | 4.53 | 85,789 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,859 |
| World War I Quiz | 0 | - | 4.78 | 101,132 |
| WWI A-Z | 0 | - | 4.50 | 38,264 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,728 |
| Famous Explorers | 0 | - | 4.58 | 36,118 |
| Famous Empires by Description | 0 | - | 4.73 | 118,323 |
