| People in History A-Z #2 | 0 | - | 4.47 | 54,776 |
| People in History A-Z #3 | 0 | - | 4.44 | 45,933 |
| Empires A-Z | 0 | - | 4.51 | 44,780 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,780 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,665 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 193,828 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,330 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 190,637 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,289 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 179,299 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,086 |
| Name an Official Language A-Z | 0 | - | 4.90 | 174,628 |
| 20th Century A-Z | 0 | - | 4.50 | 53,135 |
| 19th Century A-Z | 0 | - | 4.77 | 46,707 |
| 18th Century A-Z | 0 | - | 4.54 | 42,619 |
| People in History A-Z #4 | 0 | - | 4.10 | 22,903 |
| History by Letter - A | 0 | - | 4.51 | 152,030 |
| History by Letter - B | 0 | - | 4.45 | 171,173 |
| History by Letter - C | 0 | - | 4.69 | 170,195 |
| History by Letter - E | 0 | - | 4.51 | 139,765 |
| History by Letter - G | 0 | - | 4.45 | 121,377 |
| History by Letter - H | 0 | - | 4.45 | 135,807 |
| History by Letter - J | 0 | - | 4.51 | 153,157 |
| History by Letter - N | 0 | - | 4.44 | 103,344 |
| History by Letter - S | 0 | - | 4.47 | 93,629 |
| History by Letter - W | 0 | - | 4.45 | 108,672 |
| History by Letter - M | 0 | - | 4.54 | 119,039 |
| History by Letter - K | 0 | - | 4.50 | 100,781 |
| History by Letter - L | 0 | - | 4.49 | 111,452 |
| History by Letter - I | 0 | - | 4.46 | 103,629 |
| A to Z: Musical Terms | 0 | - | 4.43 | 40,986 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,665 |
| Geography A-Z #5 | 0 | - | 4.47 | 37,172 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,310 |
| 16th Century A-Z | 0 | - | 4.58 | 24,367 |
| 15th Century A-Z | 0 | - | 4.49 | 23,380 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 128,506 |
| Geography by Letter - T | 0 | - | 4.84 | 152,224 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,182 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,316 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,575 |
| World Cities A-Z by Clue #1 | 0 | - | 4.54 | 65,321 |
| Islands A-Z | 0 | - | 4.46 | 116,682 |
| World Cities A-Z by Clue #2 | 0 | - | 4.44 | 56,885 |
| Human Body A-Z | 0 | - | 4.51 | 128,214 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 33,738 |
| Animals A-Z #1 | 0 | - | 4.41 | 92,770 |
| Africa A-Z | 0 | - | 4.57 | 46,350 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.60 | 47,453 |
| Ethnic Groups A-Z | 0 | - | 4.50 | 42,024 |
| History by Letter - D | 0 | - | 4.39 | 136,825 |
| History by Letter - F | 0 | - | 4.18 | 113,641 |
| History by Letter - O | 0 | - | 4.31 | 99,005 |
| History by Letter - P | 0 | - | 4.38 | 107,288 |
| History by Letter - Q | 0 | - | 4.34 | 79,940 |
| History by Letter - R | 0 | - | 4.26 | 121,596 |
| History by Letter - T | 0 | - | 4.39 | 104,827 |
| History by Letter - U | 0 | - | 4.19 | 100,188 |
| History by Letter - V | 0 | - | 4.27 | 80,329 |
| History by Letter - Y | 0 | - | 4.27 | 86,902 |
| History by Letter - Z | 0 | - | 4.18 | 76,710 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,103 |
| Disney A-Z | 0 | - | 4.37 | 86,081 |
| Companies A-Z | 0 | - | 4.30 | 42,601 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,467 |
| Religion A-Z #2 | 0 | - | 4.40 | 36,793 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 81,189 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 106,817 |
| Video Games A-Z | 0 | - | 4.08 | 38,660 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,059 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,130 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,500 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,878 |
| 14th Century A-Z | 0 | - | 4.40 | 23,647 |
| Military History A-Z | 0 | - | 4.20 | 21,032 |
| Double Letters A-Z | 0 | - | 4.51 | 27,060 |
| Animals A-Z #2 | 0 | - | 4.11 | 66,024 |
| Canada A-Z | 0 | - | 4.73 | 32,634 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 234,632 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,083 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,189 |
| Same Start and End Letter - History #1 | 0 | - | 4.16 | 24,654 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,517 |
| A to Z: Musical Terms #2 | 0 | - | 4.05 | 10,934 |
| Geography A-Z #4 | 0 | - | 4.36 | 25,753 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 124,855 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,371 |
| 17th Century A-Z | 0 | - | 4.78 | 34,152 |
| NATO Military Alphabet | 0 | - | 4.98 | 553,676 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 797,563 |
| Geography by Letter - A | 0 | - | 4.74 | 209,952 |
| Geography by Letter - B | 0 | - | 4.56 | 183,123 |
| Geography by Letter - H | 0 | - | 4.69 | 149,170 |
| Geography by Letter - C | 0 | - | 4.47 | 157,444 |
| Geography by Letter - D | 0 | - | 4.50 | 149,377 |
| Geography by Letter - E | 0 | - | 4.42 | 146,549 |
| Geography by Letter - I | 0 | - | 4.42 | 121,105 |
| Geography by Letter - K | 0 | - | 4.53 | 117,237 |
| Geography by Letter - L | 0 | - | 4.43 | 147,515 |
| Geography by Letter - M | 0 | - | 4.49 | 117,525 |
| Geography by Letter - N | 0 | - | 4.51 | 126,146 |
| Geography by Letter - P | 0 | - | 4.47 | 175,034 |
| Geography by Letter - R | 0 | - | 4.43 | 130,205 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 139,287 |
| Geography by Letter - U | 0 | - | 4.54 | 141,944 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 57,948 |
| Movies that Start with G | 0 | - | 4.48 | 68,222 |
| Movies that Start with I | 0 | - | 4.41 | 64,863 |
| Brand Logos That Start with A | 0 | - | 4.51 | 69,164 |
| Brand Logos That Start With B | 0 | - | 4.41 | 59,118 |
| Brand Logos That Start With M | 0 | - | 4.45 | 61,674 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,324 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,291 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,789 |
| Name the War | 0 | - | 4.37 | 200,688 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,397 |
| Famous Firsts #1 | 0 | - | 4.40 | 68,811 |
| Famous Families #1 | 0 | - | 4.20 | 83,377 |
| Names for Warriors | 0 | - | 4.40 | 36,782 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.40 | 30,646 |
| American Football A-Z | 0 | - | 4.26 | 14,471 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 16,984 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,375 |
| Empires by Maps | 0 | - | 4.98 | 118,253 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,413 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,584 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,520 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,165 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,052 |
| Countries by Military Spending | 0 | - | 4.93 | 176,305 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,303,917 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,453 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 119,613 |
| Animals that Start with L | 0 | - | 4.47 | 101,212 |
| Animals that Start with P | 0 | - | 4.45 | 85,605 |
| Animals that Start with S | 0 | - | 4.49 | 86,771 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 89,567 |
| Geography by Letter on the World Map - C | 0 | - | 4.78 | 116,517 |
| Metals of Antiquity | 0 | - | 4.94 | 92,838 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,110 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,158 |
| WWI... or WWII? | 0 | - | 4.85 | 140,518 |
| Oldest Things | 0 | - | 3.92 | 65,585 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,757 |
| Famous Firsts #2 | 0 | - | 4.00 | 80,834 |
| Famous Firsts #3 - The United States | 0 | - | 4.17 | 14,484 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 15,003 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,623 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,697 |
| Literature by Letter - A | 0 | - | 4.23 | 31,746 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,062 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 66,819 |
| Geography by Letter - G | 0 | - | 4.35 | 125,381 |
| Geography by Letter - F | 0 | - | 4.27 | 136,954 |
| Geography by Letter - J | 0 | - | 4.34 | 122,073 |
| Geography by Letter - O | 0 | - | 4.37 | 128,895 |
| Geography by Letter - V | 0 | - | 4.39 | 120,506 |
| Geography by Letter - W | 0 | - | 4.39 | 114,097 |
| Geography by Letter - Y | 0 | - | 4.39 | 110,567 |
| Geography by Letter - Z | 0 | - | 4.11 | 80,948 |
| Geography by Letter - Q | 0 | - | 4.38 | 68,791 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.18 | 35,100 |
| Middle East A-Z | 0 | - | 4.47 | 45,754 |
| South America A-Z | 0 | - | 4.13 | 10,835 |
| Movies that Start with A | 0 | - | 4.13 | 61,612 |
| Movies that Start with C | 0 | - | 4.30 | 61,552 |
| Movies that Start with B | 0 | - | 4.35 | 84,879 |
| Movies that Start with D | 0 | - | 4.34 | 68,202 |
| Movies that Start with E | 0 | - | 4.13 | 68,147 |
| Movies that Start with J | 0 | - | 4.18 | 75,895 |
| Movies that Start with L | 0 | - | 4.16 | 60,202 |
| Movies that Start with M | 0 | - | 4.28 | 48,039 |
| Movies that Start with N | 0 | - | 4.02 | 41,091 |
| Movies that Start with P | 0 | - | 4.25 | 53,977 |
| Movies that Start with R | 0 | - | 4.17 | 46,421 |
| Movies that Start with W | 0 | - | 4.07 | 44,113 |
| Movies that Start with T | 0 | - | 4.33 | 49,090 |
| Movies that Start with S | 0 | - | 4.35 | 56,240 |
| Movies that Start with F | 0 | - | 4.13 | 68,618 |
| Music by Letter - F | 0 | - | 4.48 | 26,783 |
| Music by Letter - A | 0 | - | 4.61 | 31,157 |
| Brand Logos That Start With D | 0 | - | 4.37 | 60,588 |
| Brand Logos That Start With C | 0 | - | 4.17 | 48,967 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,118 |
| Brand Logos That Start With S | 0 | - | 4.37 | 56,604 |
| Influential Women in History | 0 | - | 4.42 | 34,913 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,001 |
| Cradles of Civilization | 0 | - | 4.46 | 38,975 |
| Materials From History #1 | 0 | - | 4.56 | 50,532 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,080 |
| Notable People of WWII | 0 | - | 4.53 | 85,298 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,381 |
| World War I Quiz | 0 | - | 4.78 | 100,195 |
| WWI A-Z | 0 | - | 4.50 | 38,004 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,085 |
| Famous Explorers | 0 | - | 4.58 | 35,921 |
| Famous Empires by Description | 0 | - | 4.70 | 117,481 |
| Answers by Time Period | 0 | - | 4.63 | 55,235 |
| Star Wars A-Z | 0 | - | 4.46 | 87,092 |
| Musical Acts by Letter - J | 0 | - | 4.20 | 77,133 |
