| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.41 | 13,843 |
| Literature by Letter - A | 0 | - | 4.25 | 29,164 |
| Literature by Letter - D | 0 | - | 4.24 | 18,583 |
| Literature by Letter - C | 0 | - | 4.32 | 24,297 |
| Literature by Letter - F | 0 | - | 4.28 | 15,465 |
| Literature by Letter - E | 0 | - | 4.02 | 13,385 |
| Literature by Letter - H | 0 | - | 4.22 | 16,503 |
| Literature by Letter - I | 0 | - | 4.25 | 13,788 |
| Literature by Letter - L | 0 | - | 4.31 | 21,538 |
| Literature by Letter - M | 0 | - | 4.21 | 17,150 |
| Literature by Letter - P | 0 | - | 4.15 | 15,418 |
| Literature by Letter - O | 0 | - | 4.35 | 12,278 |
| Literature by Letter - J | 0 | - | 4.20 | 13,462 |
| Literature by Letter - N | 0 | - | 4.20 | 13,004 |
| Literature by Letter - K | 0 | - | 4.12 | 11,046 |
| Literature by Letter - R | 0 | - | 4.02 | 10,759 |
| Literature by Letter - U | 0 | - | 4.18 | 12,033 |
| Literature by Letter - V | 0 | - | 4.04 | 10,635 |
| Literature by Letter - W | 0 | - | 4.12 | 12,393 |
| Geography by Letter - T | 0 | - | 4.81 | 119,191 |
| Authors with Books Turned into Movies | 0 | - | 4.46 | 58,127 |
| Classic Novels by Plot #1 | 0 | - | 4.41 | 67,593 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 67,452 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 90,054 |
| Geography by Letter on the World Map - C | 0 | - | 4.84 | 101,137 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 139,404 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 179,793 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 160,903 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 174,707 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 285,423 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 165,955 |
| Famous Literary Characters | 0 | - | 4.36 | 33,141 |
| Charlie and the Chocolate Factory | 0 | - | 4.41 | 14,579 |
| Literature Multiple Choice #1 | 0 | - | 4.54 | 36,829 |
| Literature Multiple Choice #2 | 0 | - | 4.42 | 31,787 |
| Classic Novels by Plot #2 | 0 | - | 4.79 | 30,885 |
| Who Wrote That Book #2 | 0 | - | 4.42 | 43,317 |
| 100 Books You Can't Do Without | 0 | - | 4.47 | 51,252 |
| Literature by Letter - G | 0 | - | 3.89 | 13,058 |
| Literature by Letter - S | 0 | - | 4.00 | 10,719 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 211,800 |
| 19th Century A-Z | 0 | - | 4.82 | 33,989 |
| Book Titles by Synonyms #1 | 0 | - | 4.72 | 70,607 |
| Ultimate Percy Jackson Characters Quiz | 0 | - | 4.44 | 41,545 |
| Brand Logos That Start with A | 0 | - | 4.52 | 54,565 |
| NATO Military Alphabet | 0 | - | 4.98 | 482,337 |
| Disney A-Z | 0 | - | 4.41 | 77,173 |
| Geography by Letter - A | 0 | - | 4.66 | 189,580 |
| Geography by Letter - B | 0 | - | 4.56 | 162,328 |
| Geography by Letter - H | 0 | - | 4.73 | 131,523 |
| Geography by Letter - C | 0 | - | 4.49 | 139,588 |
| Geography by Letter - D | 0 | - | 4.47 | 133,355 |
| Geography by Letter - I | 0 | - | 4.43 | 108,297 |
| Geography by Letter - K | 0 | - | 4.53 | 104,019 |
| Geography by Letter - L | 0 | - | 4.45 | 132,071 |
| Geography by Letter - M | 0 | - | 4.46 | 95,306 |
| Geography by Letter - N | 0 | - | 4.52 | 103,413 |
| Geography by Letter - P | 0 | - | 4.43 | 149,614 |
| Geography by Letter - S #1 | 0 | - | 4.78 | 112,845 |
| Geography by Letter - U | 0 | - | 4.55 | 115,390 |
| Geography by Letter - W | 0 | - | 4.43 | 94,509 |
| Asian Geography By Letter - K | 0 | - | 4.76 | 54,324 |
| A to Z: Musical Terms | 0 | - | 4.42 | 37,302 |
| Geography A-Z #2 | 0 | - | 4.46 | 48,956 |
| Geography A-Z #5 | 0 | - | 4.41 | 34,497 |
| Geography A-Z #1 | 0 | - | 4.55 | 65,488 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 108,569 |
| Movies that Start with G | 0 | - | 4.50 | 64,000 |
| History by Letter - A | 0 | - | 4.50 | 137,112 |
| History by Letter - B | 0 | - | 4.50 | 154,404 |
| History by Letter - C | 0 | - | 4.76 | 151,788 |
| History by Letter - E | 0 | - | 4.50 | 125,965 |
| History by Letter - G | 0 | - | 4.51 | 109,337 |
| History by Letter - H | 0 | - | 4.42 | 121,998 |
| History by Letter - J | 0 | - | 4.49 | 138,427 |
| History by Letter - N | 0 | - | 4.47 | 93,009 |
| History by Letter - S | 0 | - | 4.46 | 83,804 |
| History by Letter - W | 0 | - | 4.44 | 97,097 |
| History by Letter - M | 0 | - | 4.55 | 107,828 |
| History by Letter - K | 0 | - | 4.48 | 91,161 |
| History by Letter - L | 0 | - | 4.47 | 100,946 |
| History by Letter - I | 0 | - | 4.51 | 93,982 |
| Authors of Children's Books | 0 | - | 4.21 | 19,333 |
| Dewey Decimal System | 0 | - | 4.28 | 13,088 |
| Nonfiction Books Quiz | 0 | - | 4.51 | 20,933 |
| Who Wrote That Book #1 | 0 | - | 4.39 | 84,828 |
| 1984 the Book | 0 | - | 4.62 | 19,924 |
| Winnie-the-Pooh Characters | 0 | - | 4.41 | 27,643 |
| Nursery Rhymes Quiz | 0 | - | 4.25 | 39,417 |
| Countries by Military Spending | 0 | - | 4.93 | 157,485 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.90 | 95,940 |
| "Of Something" Book Titles | 0 | - | 4.43 | 45,242 |
| 100 Most Common English Words | 0 | - | 4.91 | 1,156,631 |
| Animals that Start with L | 0 | - | 4.43 | 93,300 |
| Animals that Start with P | 0 | - | 4.41 | 79,174 |
| Animals that Start with S | 0 | - | 4.49 | 79,817 |
| Geography by Letter on the World Map - B | 0 | - | 4.50 | 77,293 |
| World Cities A-Z #1 | 0 | - | 4.53 | 58,655 |
| Islands A-Z | 0 | - | 4.45 | 103,576 |
| World Cities A-Z #2 | 0 | - | 4.46 | 51,367 |
| Human Body A-Z | 0 | - | 4.48 | 107,572 |
| Africa A-Z | 0 | - | 4.54 | 43,490 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.70 | 53,423 |
| People in History A-Z #1 | 0 | - | 4.64 | 90,105 |
| People in History A-Z #2 | 0 | - | 4.46 | 49,775 |
| People in History A-Z #3 | 0 | - | 4.47 | 42,045 |
| Brand Logos That Start With L | 0 | - | 4.38 | 45,784 |
| WWII A-Z #1 | 0 | - | 4.81 | 92,367 |
| Companies A-Z | 0 | - | 4.30 | 41,282 |
| Religion A-Z #1 | 0 | - | 4.25 | 44,268 |
| Religion A-Z #2 | 0 | - | 4.48 | 24,534 |
| Geography by Letter - E | 0 | - | 4.39 | 131,075 |
| Geography by Letter - G | 0 | - | 4.35 | 111,525 |
| Geography by Letter - F | 0 | - | 4.26 | 122,262 |
| Geography by Letter - J | 0 | - | 4.36 | 109,018 |
| Geography by Letter - O | 0 | - | 4.37 | 106,709 |
| Geography by Letter - R | 0 | - | 4.40 | 101,700 |
| Geography by Letter - V | 0 | - | 4.37 | 93,415 |
| Geography by Letter - Y | 0 | - | 4.37 | 89,701 |
| Geography by Letter - Z | 0 | - | 4.04 | 61,333 |
| Geography by Letter - Q | 0 | - | 4.33 | 50,438 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.19 | 33,022 |
| Video Games A-Z | 0 | - | 4.04 | 34,928 |
| Geography A-Z #3 | 0 | - | 4.21 | 36,466 |
| Movies that Start with A | 0 | - | 4.09 | 57,905 |
| Movies that Start with C | 0 | - | 4.29 | 57,119 |
| Movies that Start with B | 0 | - | 4.35 | 79,622 |
| Movies that Start with D | 0 | - | 4.35 | 64,962 |
| Movies that Start with E | 0 | - | 4.19 | 64,810 |
| Movies that Start with I | 0 | - | 4.40 | 61,055 |
| Movies that Start with J | 0 | - | 4.21 | 71,980 |
| Movies that Start with L | 0 | - | 4.16 | 57,317 |
| Movies that Start with M | 0 | - | 4.26 | 45,694 |
| Movies that Start with N | 0 | - | 4.05 | 38,906 |
| Movies that Start with P | 0 | - | 4.24 | 51,643 |
| Movies that Start with R | 0 | - | 4.13 | 43,332 |
| Movies that Start with W | 0 | - | 4.04 | 42,244 |
| Movies that Start with T | 0 | - | 4.36 | 46,470 |
| Movies that Start with S | 0 | - | 4.37 | 53,352 |
| Movies that Start with F | 0 | - | 4.15 | 65,421 |
| History by Letter - D | 0 | - | 4.34 | 124,586 |
| History by Letter - F | 0 | - | 4.17 | 103,109 |
| History by Letter - O | 0 | - | 4.28 | 90,206 |
| History by Letter - P | 0 | - | 4.37 | 97,286 |
| History by Letter - Q | 0 | - | 4.35 | 73,316 |
| History by Letter - R | 0 | - | 4.24 | 111,556 |
| History by Letter - T | 0 | - | 4.40 | 95,509 |
| History by Letter - U | 0 | - | 4.19 | 91,139 |
| History by Letter - V | 0 | - | 4.27 | 73,925 |
| History by Letter - Y | 0 | - | 4.28 | 80,223 |
| History by Letter - Z | 0 | - | 4.20 | 71,101 |
| The 3rd and 4th Century | 0 | - | 4.53 | 19,622 |
| Music by Letter - F | 0 | - | 4.44 | 24,580 |
| Music by Letter - A | 0 | - | 4.60 | 28,589 |
| Word Puzzles - Book Titles #1 | 0 | - | 4.39 | 26,099 |
| Word Puzzles - Book Titles #2 | 0 | - | 4.39 | 20,801 |
| Famous Literature Fractured | 0 | - | 4.05 | 8,844 |
| The 100 Greatest Novels | 0 | - | 3.76 | 39,642 |
| Authors by Country Quiz | 0 | - | 4.35 | 30,844 |
| Bestselling Authors Quiz | 0 | - | 4.07 | 17,314 |
| Nursery Rhymes #2 | 0 | - | 4.26 | 14,935 |
| Most Common English Verbs - Extreme | 0 | - | 4.95 | 134,749 |
| Top Five Exporting Partners by Country | 0 | - | 4.84 | 61,422 |
| The Americas Geography by Letter - B | 0 | - | 4.50 | 48,698 |
| The Americas Geography by Letter - S | 0 | - | 4.55 | 41,405 |
| Middle East A-Z | 0 | - | 4.45 | 42,785 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.43 | 41,034 |
| 20th Century A-Z | 0 | - | 4.48 | 38,330 |
| Modern Library's 100 Best Novels | 0 | - | 4.00 | 10,453 |
| Books by City | 0 | - | 3.98 | 13,396 |
| Books by Clue #1 | 0 | - | 4.40 | 24,411 |
| Books by Clue #2 | 0 | - | 4.39 | 25,134 |
| Literary Groups of Things | 0 | - | 4.22 | 29,061 |
| 5-Letter Literature Chain | 0 | - | 4.32 | 51,484 |
| 4-Letter Literature Chain | 0 | - | 4.38 | 39,621 |
| Sci-Fi and Fantasy Authors | 0 | - | 4.31 | 13,554 |
| Hunger Games Trivia | 0 | - | 4.31 | 48,683 |
| Top Arms Exporting Countries | 0 | - | 4.95 | 75,660 |
| Monarchies of the World | 0 | - | 4.93 | 152,046 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 80,968 |
| Countries where the Sea Freezes | 0 | - | 4.91 | 80,596 |
| Largest Countries Without Deserts | 0 | - | 4.85 | 65,506 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.79 | 691,809 |
| A Quiz About Buddhism | 0 | - | 4.81 | 16,623 |
| Astronomy Quiz | 0 | - | 4.87 | 63,695 |
| Google What's the Difference? - Animals | 0 | - | 4.89 | 74,836 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.90 | 57,208 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.87 | 90,468 |
| Musical Acts by Letter - J | 0 | - | 4.16 | 63,692 |
| Musical Acts by Letter - M | 0 | - | 4.12 | 75,798 |
| Musical Acts by Letter - N | 0 | - | 4.03 | 55,585 |
| Musical Acts by Letter - P | 0 | - | 4.16 | 52,379 |
| Musical Acts by Letter - R | 0 | - | 4.26 | 68,964 |
| Musical Acts by Letter - A | 0 | - | 4.27 | 71,071 |
| Musical Acts by Letter - B | 0 | - | 4.28 | 62,596 |
| Musical Acts by Letter - C | 0 | - | 4.38 | 51,341 |
| Musical Acts by Letter - D | 0 | - | 4.09 | 45,176 |
| Musical Acts by Letter - E | 0 | - | 4.38 | 53,271 |
| Animals that Start with A | 0 | - | 4.21 | 103,478 |
| Animals that Start with B | 0 | - | 4.31 | 104,620 |
