| 17th Century A-Z | 0 | - | 4.78 | 34,636 |
| WWII A-Z #1 | 0 | - | 4.73 | 102,985 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,664 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 237,130 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,301 |
| Empires A-Z | 0 | - | 4.52 | 45,171 |
| History by Letter - A | 0 | - | 4.51 | 153,194 |
| History by Letter - B | 0 | - | 4.45 | 172,482 |
| History by Letter - C | 0 | - | 4.70 | 171,749 |
| History by Letter - E | 0 | - | 4.51 | 140,827 |
| History by Letter - G | 0 | - | 4.46 | 122,314 |
| History by Letter - H | 0 | - | 4.45 | 136,932 |
| History by Letter - J | 0 | - | 4.51 | 154,258 |
| History by Letter - N | 0 | - | 4.45 | 104,216 |
| History by Letter - S | 0 | - | 4.47 | 94,515 |
| History by Letter - W | 0 | - | 4.45 | 109,686 |
| History by Letter - M | 0 | - | 4.54 | 120,012 |
| History by Letter - K | 0 | - | 4.50 | 101,507 |
| History by Letter - L | 0 | - | 4.50 | 112,248 |
| History by Letter - I | 0 | - | 4.46 | 104,525 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 149,749 |
| Geography by Letter - T | 0 | - | 4.84 | 154,039 |
| People in History A-Z #1 | 0 | - | 4.63 | 99,042 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,120 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,198 |
| 20th Century A-Z | 0 | - | 4.50 | 53,730 |
| 19th Century A-Z | 0 | - | 4.77 | 47,291 |
| 18th Century A-Z | 0 | - | 4.54 | 43,172 |
| History by Letter - D | 0 | - | 4.40 | 137,967 |
| History by Letter - F | 0 | - | 4.18 | 114,604 |
| History by Letter - O | 0 | - | 4.32 | 99,645 |
| History by Letter - P | 0 | - | 4.36 | 107,983 |
| History by Letter - Q | 0 | - | 4.34 | 80,442 |
| History by Letter - R | 0 | - | 4.26 | 122,341 |
| History by Letter - T | 0 | - | 4.39 | 105,408 |
| History by Letter - U | 0 | - | 4.19 | 100,922 |
| History by Letter - V | 0 | - | 4.27 | 80,876 |
| History by Letter - Y | 0 | - | 4.27 | 87,394 |
| History by Letter - Z | 0 | - | 4.20 | 77,162 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,247 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 82,269 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 107,981 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,547 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,639 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,243 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,308 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,859 |
| Middle East A-Z | 0 | - | 4.47 | 46,015 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 180,495 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,862 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,957 |
| Star Wars A-Z | 0 | - | 4.46 | 88,245 |
| Name an Official Language A-Z | 0 | - | 4.91 | 175,987 |
| WWII Geography | 0 | - | 4.81 | 120,330 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,436 |
| WWII Figures by Picture | 0 | - | 4.89 | 65,488 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,774 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,079 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,417 |
| 16th Century A-Z | 0 | - | 4.58 | 24,900 |
| 15th Century A-Z | 0 | - | 4.49 | 23,927 |
| 14th Century A-Z | 0 | - | 4.41 | 24,385 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,747 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,678 |
| Name the English Monarchs | 0 | - | 4.91 | 502,582 |
| The Trojan War | 0 | - | 4.83 | 39,723 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,830 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,645 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,522 |
| Roman Emperors | 0 | - | 4.95 | 120,022 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,039 |
| Religion A-Z #2 | 0 | - | 4.41 | 36,993 |
| Geography by Letter - A | 0 | - | 4.74 | 211,760 |
| Geography by Letter - B | 0 | - | 4.56 | 184,782 |
| Geography by Letter - H | 0 | - | 4.69 | 150,452 |
| Geography by Letter - C | 0 | - | 4.47 | 158,844 |
| Geography by Letter - D | 0 | - | 4.50 | 150,665 |
| Geography by Letter - E | 0 | - | 4.42 | 147,743 |
| Geography by Letter - I | 0 | - | 4.42 | 122,127 |
| Geography by Letter - K | 0 | - | 4.53 | 118,469 |
| Geography by Letter - L | 0 | - | 4.43 | 148,646 |
| Geography by Letter - M | 0 | - | 4.49 | 118,754 |
| Geography by Letter - N | 0 | - | 4.51 | 127,321 |
| Geography by Letter - P | 0 | - | 4.47 | 176,161 |
| Geography by Letter - R | 0 | - | 4.43 | 131,806 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 140,697 |
| Geography by Letter - U | 0 | - | 4.53 | 143,234 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 58,168 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,339 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,923 |
| Switzerland A-Z | 0 | - | 4.45 | 25,644 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,363 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,596 |
| Movies that Start with G | 0 | - | 4.49 | 68,552 |
| Movies that Start with I | 0 | - | 4.41 | 65,169 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,332 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,859 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,120 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,316 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,743 |
| World War II Multiple Choice | 0 | - | 4.38 | 104,171 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,993 |
| Name the War | 0 | - | 4.37 | 201,652 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,542 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,061 |
| Famous Families #1 | 0 | - | 4.20 | 83,607 |
| Names for Warriors | 0 | - | 4.40 | 36,934 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,032 |
| Military History A-Z | 0 | - | 4.20 | 21,161 |
| Ye Olde Professions | 0 | - | 4.67 | 156,755 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,362 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,475 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,686 |
| NATO Military Alphabet | 0 | - | 4.98 | 560,001 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 802,500 |
| Animals that Start with L | 0 | - | 4.47 | 101,903 |
| Animals that Start with P | 0 | - | 4.45 | 86,129 |
| Animals that Start with S | 0 | - | 4.49 | 87,347 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,459 |
| Geography by Letter on the World Map - C | 0 | - | 4.79 | 117,556 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 68,150 |
| Islands A-Z | 0 | - | 4.46 | 124,508 |
| Human Body A-Z | 0 | - | 4.51 | 129,172 |
| Asian Cities A-Z by Clue | 0 | - | 4.49 | 35,557 |
| Animals A-Z #1 | 0 | - | 4.41 | 93,611 |
| Africa A-Z | 0 | - | 4.57 | 46,604 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.69 | 57,764 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,304 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,784 |
| Empires by Maps | 0 | - | 4.98 | 120,439 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,716 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,361 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,380 |
| Countries by Military Spending | 0 | - | 4.93 | 177,721 |
| 100 Most Common English Words | 0 | - | 4.89 | 1,316,540 |
| Disney A-Z | 0 | - | 4.37 | 87,118 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 38,107 |
| Literature by Letter - A | 0 | - | 4.24 | 32,123 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,280 |
| Companies A-Z | 0 | - | 4.30 | 42,701 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 120,801 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,628 |
| Geography by Letter - G | 0 | - | 4.33 | 126,403 |
| Geography by Letter - F | 0 | - | 4.27 | 137,963 |
| Geography by Letter - J | 0 | - | 4.34 | 123,028 |
| Geography by Letter - O | 0 | - | 4.37 | 129,856 |
| Geography by Letter - V | 0 | - | 4.39 | 121,871 |
| Geography by Letter - W | 0 | - | 4.39 | 114,938 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,627 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,730 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,568 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,267 |
| Video Games A-Z | 0 | - | 4.08 | 38,993 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,258 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,366 |
| Turkey A-Z | 0 | - | 4.04 | 11,847 |
| Movies that Start with A | 0 | - | 4.13 | 61,886 |
| Movies that Start with C | 0 | - | 4.30 | 61,866 |
| Movies that Start with B | 0 | - | 4.36 | 85,238 |
| Movies that Start with D | 0 | - | 4.34 | 68,451 |
| Movies that Start with E | 0 | - | 4.13 | 68,383 |
| Movies that Start with J | 0 | - | 4.18 | 76,178 |
| Movies that Start with L | 0 | - | 4.16 | 60,440 |
| Movies that Start with M | 0 | - | 4.28 | 48,243 |
| Movies that Start with N | 0 | - | 4.02 | 41,264 |
| Movies that Start with P | 0 | - | 4.25 | 54,160 |
| Movies that Start with R | 0 | - | 4.17 | 46,662 |
| Movies that Start with W | 0 | - | 4.07 | 44,275 |
| Movies that Start with T | 0 | - | 4.34 | 49,315 |
| Movies that Start with S | 0 | - | 4.35 | 56,481 |
| Movies that Start with F | 0 | - | 4.13 | 68,868 |
| Music by Letter - F | 0 | - | 4.48 | 27,008 |
| Music by Letter - A | 0 | - | 4.61 | 31,394 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,013 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,569 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,676 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,173 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,635 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,238 |
| Metals of Antiquity | 0 | - | 4.95 | 93,430 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,702 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 707,618 |
| Notable People of WWII | 0 | - | 4.53 | 85,917 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,975 |
| 1950s Decade Quiz | 0 | - | 4.41 | 49,228 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,919 |
| World War I Quiz | 0 | - | 4.78 | 101,273 |
| WWI A-Z | 0 | - | 4.50 | 38,339 |
| Oldest Things | 0 | - | 3.92 | 65,657 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,821 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,648 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,993 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,913 |
| NBA Basketball by Year, 1970–1999 | 0 | - | 4.28 | 44,981 |
| NBA Basketball by Year, 2000–Present | 0 | - | 4.34 | 60,898 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,296 |
| Medieval English History | 0 | - | 4.53 | 43,506 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.41 | 30,742 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,183 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,147 |
