| People in History A-Z #3 | 0 | - | 4.44 | 46,115 |
| Empires A-Z | 0 | - | 4.51 | 45,064 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,902 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,133 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,899 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,804 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,594 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,111 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 179,895 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,553 |
| Name an Official Language A-Z | 0 | - | 4.91 | 175,576 |
| 20th Century A-Z | 0 | - | 4.50 | 53,538 |
| 19th Century A-Z | 0 | - | 4.77 | 47,124 |
| 18th Century A-Z | 0 | - | 4.54 | 43,000 |
| People in History A-Z #4 | 0 | - | 4.10 | 22,996 |
| History by Letter - A | 0 | - | 4.51 | 152,686 |
| History by Letter - B | 0 | - | 4.45 | 171,922 |
| History by Letter - C | 0 | - | 4.70 | 171,139 |
| History by Letter - E | 0 | - | 4.51 | 140,395 |
| History by Letter - G | 0 | - | 4.46 | 121,905 |
| History by Letter - H | 0 | - | 4.45 | 136,368 |
| History by Letter - J | 0 | - | 4.51 | 153,815 |
| History by Letter - N | 0 | - | 4.45 | 103,889 |
| History by Letter - S | 0 | - | 4.47 | 94,242 |
| History by Letter - W | 0 | - | 4.45 | 109,174 |
| History by Letter - M | 0 | - | 4.54 | 119,693 |
| History by Letter - K | 0 | - | 4.50 | 101,215 |
| History by Letter - L | 0 | - | 4.50 | 111,936 |
| History by Letter - I | 0 | - | 4.46 | 104,071 |
| Religion A-Z #2 | 0 | - | 4.41 | 36,955 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,254 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,835 |
| Geography A-Z #5 | 0 | - | 4.47 | 37,306 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,501 |
| 16th Century A-Z | 0 | - | 4.58 | 24,749 |
| 15th Century A-Z | 0 | - | 4.49 | 23,795 |
| 14th Century A-Z | 0 | - | 4.41 | 24,210 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 129,806 |
| Geography by Letter - T | 0 | - | 4.84 | 153,492 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,322 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,436 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,658 |
| World Cities A-Z by Clue #1 | 0 | - | 4.50 | 67,766 |
| Islands A-Z | 0 | - | 4.46 | 117,301 |
| Human Body A-Z | 0 | - | 4.51 | 128,969 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 35,324 |
| Animals A-Z #1 | 0 | - | 4.41 | 93,121 |
| Africa A-Z | 0 | - | 4.57 | 46,545 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.68 | 57,476 |
| Ethnic Groups A-Z | 0 | - | 4.50 | 42,206 |
| History by Letter - D | 0 | - | 4.39 | 137,372 |
| History by Letter - F | 0 | - | 4.18 | 114,081 |
| History by Letter - O | 0 | - | 4.32 | 99,387 |
| History by Letter - P | 0 | - | 4.39 | 107,728 |
| History by Letter - Q | 0 | - | 4.34 | 80,242 |
| History by Letter - R | 0 | - | 4.26 | 122,050 |
| History by Letter - T | 0 | - | 4.39 | 105,171 |
| History by Letter - U | 0 | - | 4.19 | 100,690 |
| History by Letter - V | 0 | - | 4.27 | 80,671 |
| History by Letter - Y | 0 | - | 4.27 | 87,183 |
| History by Letter - Z | 0 | - | 4.19 | 76,962 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,205 |
| History Containing the Letter X | 0 | - | 4.47 | 27,005 |
| Disney A-Z | 0 | - | 4.37 | 86,909 |
| Companies A-Z | 0 | - | 4.30 | 42,672 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,587 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 81,943 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 107,643 |
| Video Games A-Z | 0 | - | 4.08 | 38,888 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,195 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,277 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,909 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,256 |
| Military History A-Z | 0 | - | 4.20 | 21,120 |
| Double Letters A-Z | 0 | - | 4.51 | 27,125 |
| World Cities A-Z by Clue #2 | 0 | - | 4.40 | 58,763 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,214 |
| Canada A-Z | 0 | - | 4.73 | 32,753 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 236,093 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,333 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,595 |
| Same Start and End Letter - History #1 | 0 | - | 4.17 | 24,720 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,629 |
| History Ending in Z | 0 | - | 4.35 | 13,509 |
| A to Z: Musical Terms #2 | 0 | - | 4.05 | 11,008 |
| Geography A-Z #4 | 0 | - | 4.36 | 25,855 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,110 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,552 |
| 17th Century A-Z | 0 | - | 4.78 | 34,497 |
| NATO Military Alphabet | 0 | - | 4.98 | 557,668 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 800,841 |
| Geography by Letter - A | 0 | - | 4.74 | 211,272 |
| Geography by Letter - B | 0 | - | 4.56 | 184,328 |
| Geography by Letter - H | 0 | - | 4.69 | 150,089 |
| Geography by Letter - C | 0 | - | 4.47 | 158,442 |
| Geography by Letter - D | 0 | - | 4.50 | 150,292 |
| Geography by Letter - E | 0 | - | 4.42 | 147,383 |
| Geography by Letter - I | 0 | - | 4.42 | 121,824 |
| Geography by Letter - K | 0 | - | 4.53 | 117,929 |
| Geography by Letter - L | 0 | - | 4.43 | 148,300 |
| Geography by Letter - M | 0 | - | 4.49 | 118,452 |
| Geography by Letter - N | 0 | - | 4.51 | 126,850 |
| Geography by Letter - P | 0 | - | 4.47 | 175,817 |
| Geography by Letter - R | 0 | - | 4.43 | 131,371 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 140,322 |
| Geography by Letter - U | 0 | - | 4.53 | 142,808 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 58,090 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,590 |
| Movies that Start with G | 0 | - | 4.49 | 68,449 |
| Movies that Start with I | 0 | - | 4.41 | 65,090 |
| Brand Logos That Start with A | 0 | - | 4.52 | 69,953 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,413 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,784 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,552 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,941 |
| Name the War | 0 | - | 4.37 | 201,351 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,496 |
| Famous Firsts #1 | 0 | - | 4.40 | 68,988 |
| Famous Families #1 | 0 | - | 4.20 | 83,538 |
| Names for Warriors | 0 | - | 4.40 | 36,889 |
| Famous Firsts #2 | 0 | - | 4.01 | 80,979 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.40 | 30,707 |
| Islam A-Z | 0 | - | 4.31 | 23,971 |
| American Football A-Z | 0 | - | 4.26 | 14,499 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,072 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,406 |
| Empires by Maps | 0 | - | 4.98 | 119,766 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,860 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,078 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,659 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,540 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,293 |
| Countries by Military Spending | 0 | - | 4.93 | 177,193 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,312,452 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,822 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 120,283 |
| Animals that Start with L | 0 | - | 4.47 | 101,748 |
| Animals that Start with P | 0 | - | 4.45 | 85,990 |
| Animals that Start with S | 0 | - | 4.49 | 87,191 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,161 |
| Geography by Letter on the World Map - C | 0 | - | 4.78 | 117,223 |
| Metals of Antiquity | 0 | - | 4.94 | 93,234 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,526 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,302 |
| WWI... or WWII? | 0 | - | 4.85 | 141,715 |
| Oldest Things | 0 | - | 3.92 | 65,638 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,807 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,620 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,102 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,130 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,647 |
| Literature by Letter - A | 0 | - | 4.23 | 31,864 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,123 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,034 |
| Geography by Letter - G | 0 | - | 4.35 | 126,093 |
| Geography by Letter - F | 0 | - | 4.27 | 137,664 |
| Geography by Letter - J | 0 | - | 4.34 | 122,727 |
| Geography by Letter - O | 0 | - | 4.37 | 129,570 |
| Geography by Letter - V | 0 | - | 4.39 | 121,531 |
| Geography by Letter - W | 0 | - | 4.39 | 114,679 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,163 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,487 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,330 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,215 |
| Middle East A-Z | 0 | - | 4.47 | 45,949 |
| South America A-Z | 0 | - | 4.13 | 10,885 |
| Movies that Start with A | 0 | - | 4.13 | 61,805 |
| Movies that Start with C | 0 | - | 4.30 | 61,765 |
| Movies that Start with B | 0 | - | 4.36 | 85,121 |
| Movies that Start with D | 0 | - | 4.34 | 68,372 |
| Movies that Start with E | 0 | - | 4.13 | 68,304 |
| Movies that Start with J | 0 | - | 4.18 | 76,085 |
| Movies that Start with L | 0 | - | 4.16 | 60,359 |
| Movies that Start with M | 0 | - | 4.28 | 48,176 |
| Movies that Start with N | 0 | - | 4.02 | 41,213 |
| Movies that Start with P | 0 | - | 4.25 | 54,112 |
| Movies that Start with R | 0 | - | 4.17 | 46,584 |
| Movies that Start with W | 0 | - | 4.07 | 44,222 |
| Movies that Start with T | 0 | - | 4.34 | 49,239 |
| Movies that Start with S | 0 | - | 4.35 | 56,404 |
| Movies that Start with F | 0 | - | 4.13 | 68,782 |
| Music by Letter - F | 0 | - | 4.48 | 26,954 |
| Music by Letter - A | 0 | - | 4.61 | 31,315 |
| Brand Logos That Start With B | 0 | - | 4.38 | 59,746 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,260 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,449 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,828 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,304 |
| Influential Women in History | 0 | - | 4.42 | 35,443 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,174 |
| Cradles of Civilization | 0 | - | 4.46 | 39,502 |
| Materials From History #1 | 0 | - | 4.56 | 51,424 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,294 |
| Notable People of WWII | 0 | - | 4.53 | 85,547 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,818 |
| World War I Quiz | 0 | - | 4.78 | 101,085 |
| WWI A-Z | 0 | - | 4.50 | 38,231 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,657 |
| Famous Explorers | 0 | - | 4.58 | 36,102 |
| Famous Empires by Description | 0 | - | 4.73 | 118,274 |
