| Classic Novels by Plot #2 | 0 | - | 4.86 | 38,312 |
| Literature by Letter - A | 0 | - | 4.24 | 32,243 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,347 |
| Literature by Letter - D | 0 | - | 4.29 | 20,867 |
| Literature by Letter - C | 0 | - | 4.34 | 26,819 |
| Literature by Letter - F | 0 | - | 4.26 | 17,460 |
| Literature by Letter - E | 0 | - | 4.05 | 15,350 |
| Literature by Letter - H | 0 | - | 4.29 | 20,316 |
| Literature by Letter - I | 0 | - | 4.25 | 17,526 |
| Literature by Letter - L | 0 | - | 4.32 | 23,432 |
| Literature by Letter - M | 0 | - | 4.18 | 18,849 |
| Literature by Letter - O | 0 | - | 4.30 | 13,739 |
| Literature by Letter - J | 0 | - | 4.23 | 15,086 |
| Literature by Letter - N | 0 | - | 4.24 | 14,529 |
| Literature by Letter - K | 0 | - | 4.13 | 12,530 |
| Literature by Letter - R | 0 | - | 4.06 | 12,114 |
| Literature by Letter - T | 0 | - | 4.34 | 18,748 |
| Literature by Letter - U | 0 | - | 4.20 | 13,291 |
| Literature by Letter - V | 0 | - | 4.06 | 11,940 |
| Literature by Letter - W | 0 | - | 4.15 | 13,685 |
| Geography by Letter - T | 0 | - | 4.84 | 154,481 |
| Authors with Books Turned into Movies | 0 | - | 4.45 | 63,038 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 82,594 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 108,403 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,815 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,126 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,586 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,864 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,395 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 180,805 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 73,163 |
| Famous Literary Characters | 0 | - | 4.38 | 36,664 |
| Charlie and the Chocolate Factory | 0 | - | 4.45 | 16,332 |
| Literature Multiple Choice #1 | 0 | - | 4.51 | 40,959 |
| Literature Multiple Choice #2 | 0 | - | 4.45 | 34,637 |
| Classic Novels by Plot #1 | 0 | - | 4.40 | 73,699 |
| Who Wrote That Book #2 | 0 | - | 4.47 | 48,097 |
| 100 Books You Can't Do Without | 0 | - | 4.49 | 64,322 |
| Who Wrote That Book #1 | 0 | - | 4.47 | 103,611 |
| Literature by Letter - G | 0 | - | 3.91 | 14,801 |
| Literature by Letter - S | 0 | - | 3.94 | 12,118 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 237,804 |
| Name an Official Language A-Z | 0 | - | 4.91 | 176,376 |
| Book Titles by Synonyms #1 | 0 | - | 4.54 | 75,985 |
| Ultimate Percy Jackson Characters Quiz | 0 | - | 4.49 | 45,323 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,707 |
| NATO Military Alphabet | 0 | - | 4.98 | 561,879 |
| Religion A-Z #2 | 0 | - | 4.41 | 37,054 |
| Geography by Letter - A | 0 | - | 4.74 | 212,177 |
| Geography by Letter - B | 0 | - | 4.56 | 185,180 |
| Geography by Letter - H | 0 | - | 4.69 | 150,767 |
| Geography by Letter - C | 0 | - | 4.47 | 159,183 |
| Geography by Letter - D | 0 | - | 4.50 | 151,205 |
| Geography by Letter - E | 0 | - | 4.42 | 148,049 |
| Geography by Letter - I | 0 | - | 4.42 | 122,352 |
| Geography by Letter - K | 0 | - | 4.53 | 118,709 |
| Geography by Letter - L | 0 | - | 4.43 | 148,917 |
| Geography by Letter - M | 0 | - | 4.49 | 118,990 |
| Geography by Letter - N | 0 | - | 4.51 | 127,543 |
| Geography by Letter - P | 0 | - | 4.47 | 176,444 |
| Geography by Letter - R | 0 | - | 4.43 | 132,134 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 140,978 |
| Geography by Letter - U | 0 | - | 4.53 | 143,514 |
| Asian Geography By Letter - K | 0 | - | 4.75 | 58,243 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,428 |
| Geography A-Z #2 | 0 | - | 4.46 | 53,007 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,429 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,687 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,461 |
| Movies that Start with G | 0 | - | 4.49 | 68,647 |
| Movies that Start with I | 0 | - | 4.41 | 65,253 |
| History by Letter - A | 0 | - | 4.51 | 153,480 |
| History by Letter - B | 0 | - | 4.45 | 172,792 |
| History by Letter - C | 0 | - | 4.70 | 172,081 |
| History by Letter - E | 0 | - | 4.51 | 141,081 |
| History by Letter - G | 0 | - | 4.46 | 122,532 |
| History by Letter - H | 0 | - | 4.45 | 137,167 |
| History by Letter - J | 0 | - | 4.51 | 154,546 |
| History by Letter - N | 0 | - | 4.45 | 104,403 |
| History by Letter - S | 0 | - | 4.47 | 94,707 |
| History by Letter - W | 0 | - | 4.45 | 109,908 |
| History by Letter - M | 0 | - | 4.54 | 120,213 |
| History by Letter - K | 0 | - | 4.50 | 101,694 |
| History by Letter - L | 0 | - | 4.50 | 112,466 |
| History by Letter - I | 0 | - | 4.46 | 104,736 |
| Authors of Children's Books | 0 | - | 4.23 | 20,020 |
| Books by City | 0 | - | 4.04 | 14,295 |
| Word Puzzles - Book Titles #1 | 0 | - | 4.41 | 27,590 |
| Dewey Decimal System | 0 | - | 4.28 | 13,597 |
| Authors by Country | 0 | - | 4.40 | 32,231 |
| Nonfiction Books Quiz | 0 | - | 4.44 | 22,637 |
| 1984 the Book | 0 | - | 4.61 | 21,071 |
| Winnie-the-Pooh Characters | 0 | - | 4.46 | 28,646 |
| Nursery Rhymes Fill in the Blank | 0 | - | 4.14 | 40,512 |
| Countries by Military Spending | 0 | - | 4.93 | 178,474 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 121,228 |
| "Of Something" Book Titles | 0 | - | 4.45 | 48,173 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,320,487 |
| Animals that Start with L | 0 | - | 4.47 | 102,275 |
| Animals that Start with P | 0 | - | 4.45 | 86,329 |
| Animals that Start with S | 0 | - | 4.49 | 87,530 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,750 |
| Geography by Letter on the World Map - C | 0 | - | 4.77 | 118,137 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 68,464 |
| Islands A-Z | 0 | - | 4.46 | 125,953 |
| World Cities A-Z by Clue #2 | 0 | - | 4.41 | 59,327 |
| Human Body A-Z | 0 | - | 4.51 | 129,412 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 42,528 |
| Africa A-Z | 0 | - | 4.57 | 46,692 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,385 |
| People in History A-Z #1 | 0 | - | 4.63 | 99,214 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,234 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,274 |
| Books by Clue #2 | 0 | - | 4.43 | 26,726 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,287 |
| Brand Logos That Start With D | 0 | - | 4.35 | 61,832 |
| Brand Logos That Start With C | 0 | - | 4.20 | 49,878 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,480 |
| Brand Logos That Start With M | 0 | - | 4.40 | 63,148 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,926 |
| Disney A-Z | 0 | - | 4.37 | 87,298 |
| Companies A-Z | 0 | - | 4.30 | 42,727 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,684 |
| Geography by Letter - G | 0 | - | 4.33 | 126,660 |
| Geography by Letter - F | 0 | - | 4.27 | 138,222 |
| Geography by Letter - J | 0 | - | 4.34 | 123,269 |
| Geography by Letter - O | 0 | - | 4.37 | 130,098 |
| Geography by Letter - V | 0 | - | 4.39 | 122,148 |
| Geography by Letter - W | 0 | - | 4.39 | 115,151 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,852 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,898 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,762 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,316 |
| Video Games A-Z | 0 | - | 4.05 | 39,112 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,324 |
| Movies that Start with A | 0 | - | 4.13 | 61,955 |
| Movies that Start with C | 0 | - | 4.30 | 61,947 |
| Movies that Start with B | 0 | - | 4.36 | 85,337 |
| Movies that Start with D | 0 | - | 4.34 | 68,518 |
| Movies that Start with E | 0 | - | 4.13 | 68,451 |
| Movies that Start with J | 0 | - | 4.18 | 76,266 |
| Movies that Start with L | 0 | - | 4.16 | 60,491 |
| Movies that Start with M | 0 | - | 4.28 | 48,300 |
| Movies that Start with N | 0 | - | 4.02 | 41,308 |
| Movies that Start with P | 0 | - | 4.25 | 54,202 |
| Movies that Start with R | 0 | - | 4.17 | 46,708 |
| Movies that Start with W | 0 | - | 4.07 | 44,302 |
| Movies that Start with T | 0 | - | 4.34 | 49,371 |
| Movies that Start with S | 0 | - | 4.35 | 56,544 |
| Movies that Start with F | 0 | - | 4.13 | 68,944 |
| History by Letter - D | 0 | - | 4.40 | 138,206 |
| History by Letter - F | 0 | - | 4.18 | 114,794 |
| History by Letter - O | 0 | - | 4.32 | 99,799 |
| History by Letter - P | 0 | - | 4.36 | 108,166 |
| History by Letter - Q | 0 | - | 4.34 | 80,565 |
| History by Letter - R | 0 | - | 4.26 | 122,510 |
| History by Letter - T | 0 | - | 4.39 | 105,561 |
| History by Letter - U | 0 | - | 4.19 | 101,076 |
| History by Letter - V | 0 | - | 4.27 | 81,008 |
| History by Letter - Y | 0 | - | 4.27 | 87,523 |
| History by Letter - Z | 0 | - | 4.20 | 77,265 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,293 |
| Music by Letter - F | 0 | - | 4.48 | 27,056 |
| Music by Letter - A | 0 | - | 4.61 | 31,448 |
| Word Puzzles - Book Titles #2 | 0 | - | 4.38 | 21,896 |
| Famous Literature Fractured | 0 | - | 4.05 | 9,762 |
| The 100 Greatest Novels | 0 | - | 3.72 | 41,850 |
| Bestselling Authors | 0 | - | 4.10 | 18,962 |
| Characters from Books #2 | 0 | - | 4.42 | 79,996 |
| Nursery Rhymes #2 | 0 | - | 4.22 | 15,476 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,751 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,264 |
| Middle East A-Z | 0 | - | 4.47 | 46,161 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,439 |
| 20th Century A-Z | 0 | - | 4.50 | 53,848 |
| 19th Century A-Z | 0 | - | 4.77 | 47,376 |
| 18th Century A-Z | 0 | - | 4.54 | 43,245 |
| Modern Library's 100 Best Novels | 0 | - | 3.93 | 11,480 |
| Books by Clue #1 | 0 | - | 4.36 | 25,808 |
| Literary Groups of Things | 0 | - | 4.26 | 30,665 |
| 5-Letter Literature Chain | 0 | - | 4.29 | 54,888 |
| 4-Letter Literature Chain | 0 | - | 4.39 | 42,440 |
| Sci-Fi and Fantasy Authors | 0 | - | 4.37 | 15,885 |
| Hunger Games Trivia | 0 | - | 4.22 | 53,411 |
| The Hunger Games Districts Quiz | 0 | - | 4.21 | 31,893 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 92,217 |
| Ultimate Car Logos Quiz | 0 | - | 4.81 | 182,043 |
| Star Wars A-Z | 0 | - | 4.46 | 88,477 |
| Monarchies of the World | 0 | - | 4.94 | 169,376 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,367 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 112,653 |
| Countries where the Sea Freezes | 0 | - | 4.93 | 114,812 |
| Largest Countries Without Deserts | 0 | - | 4.89 | 75,379 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.80 | 803,632 |
| Astronomy Quiz | 0 | - | 4.90 | 82,882 |
| Google What's the Difference? - Animals | 0 | - | 4.93 | 92,927 |
| Countries with the Longest High Speed Rail Networks | 0 | - | 4.91 | 65,956 |
| Cities with the Most Metro Rail Stations | 0 | - | 4.89 | 102,626 |
| Musical Acts by Letter - J | 0 | - | 4.17 | 77,563 |
| Musical Acts by Letter - M | 0 | - | 4.15 | 93,550 |
