| People in History A-Z #3 | 0 | - | 4.44 | 46,130 |
| Empires A-Z | 0 | - | 4.52 | 45,084 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,912 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,173 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,065 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,839 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,682 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,167 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 179,953 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,579 |
| Name an Official Language A-Z | 0 | - | 4.91 | 175,641 |
| 20th Century A-Z | 0 | - | 4.50 | 53,610 |
| 19th Century A-Z | 0 | - | 4.77 | 47,191 |
| 18th Century A-Z | 0 | - | 4.54 | 43,080 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,002 |
| History by Letter - A | 0 | - | 4.51 | 152,776 |
| History by Letter - B | 0 | - | 4.45 | 172,005 |
| History by Letter - C | 0 | - | 4.70 | 171,283 |
| History by Letter - E | 0 | - | 4.51 | 140,461 |
| History by Letter - G | 0 | - | 4.46 | 121,971 |
| History by Letter - H | 0 | - | 4.45 | 136,429 |
| History by Letter - J | 0 | - | 4.51 | 153,883 |
| History by Letter - N | 0 | - | 4.45 | 103,988 |
| History by Letter - S | 0 | - | 4.47 | 94,287 |
| History by Letter - W | 0 | - | 4.45 | 109,232 |
| History by Letter - M | 0 | - | 4.54 | 119,742 |
| History by Letter - K | 0 | - | 4.50 | 101,268 |
| History by Letter - L | 0 | - | 4.50 | 111,997 |
| History by Letter - I | 0 | - | 4.46 | 104,116 |
| Religion A-Z #2 | 0 | - | 4.41 | 36,963 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,272 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,854 |
| Geography A-Z #5 | 0 | - | 4.47 | 37,317 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,521 |
| 16th Century A-Z | 0 | - | 4.58 | 24,828 |
| 15th Century A-Z | 0 | - | 4.49 | 23,866 |
| 14th Century A-Z | 0 | - | 4.41 | 24,293 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 129,904 |
| Geography by Letter - T | 0 | - | 4.84 | 153,590 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,327 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,445 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,663 |
| World Cities A-Z by Clue #1 | 0 | - | 4.50 | 67,858 |
| Islands A-Z | 0 | - | 4.45 | 119,683 |
| Human Body A-Z | 0 | - | 4.51 | 129,009 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 35,368 |
| Animals A-Z #1 | 0 | - | 4.41 | 93,151 |
| Africa A-Z | 0 | - | 4.57 | 46,559 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.69 | 57,529 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,214 |
| History by Letter - D | 0 | - | 4.39 | 137,436 |
| History by Letter - F | 0 | - | 4.18 | 114,137 |
| History by Letter - O | 0 | - | 4.32 | 99,433 |
| History by Letter - P | 0 | - | 4.39 | 107,770 |
| History by Letter - Q | 0 | - | 4.34 | 80,273 |
| History by Letter - R | 0 | - | 4.26 | 122,104 |
| History by Letter - T | 0 | - | 4.39 | 105,207 |
| History by Letter - U | 0 | - | 4.19 | 100,725 |
| History by Letter - V | 0 | - | 4.27 | 80,704 |
| History by Letter - Y | 0 | - | 4.27 | 87,215 |
| History by Letter - Z | 0 | - | 4.20 | 76,990 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,212 |
| History Containing the Letter X | 0 | - | 4.47 | 27,014 |
| Disney A-Z | 0 | - | 4.37 | 86,943 |
| Companies A-Z | 0 | - | 4.30 | 42,678 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,596 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 82,005 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 107,703 |
| Video Games A-Z | 0 | - | 4.08 | 38,911 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,206 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,294 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,951 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,291 |
| Military History A-Z | 0 | - | 4.20 | 21,127 |
| Double Letters A-Z | 0 | - | 4.51 | 27,134 |
| World Cities A-Z by Clue #2 | 0 | - | 4.40 | 58,826 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,229 |
| Canada A-Z | 0 | - | 4.73 | 32,764 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 236,226 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,353 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,626 |
| Same Start and End Letter - History #1 | 0 | - | 4.17 | 24,724 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,638 |
| History Ending in Z | 0 | - | 4.35 | 13,513 |
| A to Z: Musical Terms #2 | 0 | - | 4.05 | 11,011 |
| Geography A-Z #4 | 0 | - | 4.36 | 25,863 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,126 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,571 |
| 17th Century A-Z | 0 | - | 4.78 | 34,567 |
| NATO Military Alphabet | 0 | - | 4.98 | 558,106 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 801,060 |
| Geography by Letter - A | 0 | - | 4.74 | 211,358 |
| Geography by Letter - B | 0 | - | 4.56 | 184,411 |
| Geography by Letter - H | 0 | - | 4.69 | 150,140 |
| Geography by Letter - C | 0 | - | 4.47 | 158,505 |
| Geography by Letter - D | 0 | - | 4.50 | 150,370 |
| Geography by Letter - E | 0 | - | 4.42 | 147,445 |
| Geography by Letter - I | 0 | - | 4.42 | 121,877 |
| Geography by Letter - K | 0 | - | 4.53 | 117,977 |
| Geography by Letter - L | 0 | - | 4.43 | 148,359 |
| Geography by Letter - M | 0 | - | 4.49 | 118,495 |
| Geography by Letter - N | 0 | - | 4.51 | 126,920 |
| Geography by Letter - P | 0 | - | 4.47 | 175,875 |
| Geography by Letter - R | 0 | - | 4.43 | 131,435 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 140,390 |
| Geography by Letter - U | 0 | - | 4.53 | 142,888 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 58,107 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,600 |
| Movies that Start with G | 0 | - | 4.49 | 68,460 |
| Movies that Start with I | 0 | - | 4.41 | 65,100 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,018 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,488 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,820 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,572 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,948 |
| Name the War | 0 | - | 4.37 | 201,411 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,509 |
| Famous Firsts #1 | 0 | - | 4.40 | 68,994 |
| Famous Families #1 | 0 | - | 4.20 | 83,550 |
| Names for Warriors | 0 | - | 4.40 | 36,895 |
| Famous Firsts #2 | 0 | - | 4.01 | 80,984 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.40 | 30,711 |
| Islam A-Z | 0 | - | 4.31 | 23,985 |
| American Football A-Z | 0 | - | 4.26 | 14,501 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,078 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,474 |
| Empires by Maps | 0 | - | 4.98 | 119,862 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,905 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,124 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,677 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,572 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,315 |
| Countries by Military Spending | 0 | - | 4.93 | 177,287 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,313,188 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,858 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 120,351 |
| Animals that Start with L | 0 | - | 4.47 | 101,766 |
| Animals that Start with P | 0 | - | 4.45 | 86,006 |
| Animals that Start with S | 0 | - | 4.49 | 87,210 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,212 |
| Geography by Letter on the World Map - C | 0 | - | 4.79 | 117,287 |
| Metals of Antiquity | 0 | - | 4.94 | 93,269 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,556 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,318 |
| WWI... or WWII? | 0 | - | 4.85 | 141,801 |
| Oldest Things | 0 | - | 3.92 | 65,638 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,808 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,622 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,114 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,161 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,747 |
| Literature by Letter - A | 0 | - | 4.23 | 31,905 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,154 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,056 |
| Geography by Letter - G | 0 | - | 4.35 | 126,151 |
| Geography by Letter - F | 0 | - | 4.27 | 137,714 |
| Geography by Letter - J | 0 | - | 4.34 | 122,775 |
| Geography by Letter - O | 0 | - | 4.37 | 129,614 |
| Geography by Letter - V | 0 | - | 4.39 | 121,592 |
| Geography by Letter - W | 0 | - | 4.39 | 114,727 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,229 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,533 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,377 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,220 |
| Middle East A-Z | 0 | - | 4.47 | 45,965 |
| South America A-Z | 0 | - | 4.13 | 10,888 |
| Movies that Start with A | 0 | - | 4.13 | 61,817 |
| Movies that Start with C | 0 | - | 4.30 | 61,783 |
| Movies that Start with B | 0 | - | 4.36 | 85,142 |
| Movies that Start with D | 0 | - | 4.34 | 68,386 |
| Movies that Start with E | 0 | - | 4.13 | 68,314 |
| Movies that Start with J | 0 | - | 4.18 | 76,097 |
| Movies that Start with L | 0 | - | 4.16 | 60,369 |
| Movies that Start with M | 0 | - | 4.28 | 48,183 |
| Movies that Start with N | 0 | - | 4.02 | 41,219 |
| Movies that Start with P | 0 | - | 4.25 | 54,118 |
| Movies that Start with R | 0 | - | 4.17 | 46,594 |
| Movies that Start with W | 0 | - | 4.07 | 44,230 |
| Movies that Start with T | 0 | - | 4.34 | 49,251 |
| Movies that Start with S | 0 | - | 4.35 | 56,421 |
| Movies that Start with F | 0 | - | 4.13 | 68,795 |
| Music by Letter - F | 0 | - | 4.48 | 26,960 |
| Music by Letter - A | 0 | - | 4.61 | 31,331 |
| Brand Logos That Start With B | 0 | - | 4.38 | 59,783 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,326 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,480 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,883 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,359 |
| Influential Women in History | 0 | - | 4.42 | 35,474 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,182 |
| Cradles of Civilization | 0 | - | 4.46 | 39,531 |
| Materials From History #1 | 0 | - | 4.56 | 51,458 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,481 |
| Notable People of WWII | 0 | - | 4.53 | 85,572 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,841 |
| World War I Quiz | 0 | - | 4.78 | 101,112 |
| WWI A-Z | 0 | - | 4.50 | 38,245 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,703 |
| Famous Explorers | 0 | - | 4.58 | 36,112 |
| Famous Empires by Description | 0 | - | 4.73 | 118,304 |
