| 20th Century A-Z | 0 | - | 4.50 | 53,907 |
| 19th Century A-Z | 0 | - | 4.77 | 47,414 |
| 18th Century A-Z | 0 | - | 4.54 | 43,273 |
| 16th Century A-Z | 0 | - | 4.58 | 24,981 |
| 15th Century A-Z | 0 | - | 4.49 | 23,987 |
| 14th Century A-Z | 0 | - | 4.41 | 24,462 |
| 17th Century A-Z | 0 | - | 4.78 | 34,718 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,924 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,377 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,710 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,570 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,611 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 180,999 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 73,287 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 238,172 |
| Name an Official Language A-Z | 0 | - | 4.91 | 176,625 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,518 |
| Empires A-Z | 0 | - | 4.52 | 45,363 |
| History by Letter - A | 0 | - | 4.51 | 153,649 |
| History by Letter - B | 0 | - | 4.45 | 172,994 |
| History by Letter - C | 0 | - | 4.70 | 172,317 |
| History by Letter - E | 0 | - | 4.51 | 141,247 |
| History by Letter - G | 0 | - | 4.46 | 122,681 |
| History by Letter - H | 0 | - | 4.45 | 137,332 |
| History by Letter - J | 0 | - | 4.51 | 154,708 |
| History by Letter - N | 0 | - | 4.45 | 104,517 |
| History by Letter - S | 0 | - | 4.47 | 94,796 |
| History by Letter - W | 0 | - | 4.45 | 110,023 |
| History by Letter - M | 0 | - | 4.54 | 120,458 |
| History by Letter - K | 0 | - | 4.50 | 101,806 |
| History by Letter - L | 0 | - | 4.50 | 112,592 |
| History by Letter - I | 0 | - | 4.46 | 104,835 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 154,835 |
| Geography by Letter - T | 0 | - | 4.84 | 154,802 |
| People in History A-Z #1 | 0 | - | 4.63 | 99,562 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,379 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,383 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 68,581 |
| Islands A-Z | 0 | - | 4.46 | 126,676 |
| World Cities A-Z by Clue #2 | 0 | - | 4.41 | 59,426 |
| Human Body A-Z | 0 | - | 4.51 | 129,517 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 42,827 |
| Africa A-Z | 0 | - | 4.57 | 46,733 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.70 | 58,119 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,697 |
| History by Letter - D | 0 | - | 4.40 | 138,359 |
| History by Letter - F | 0 | - | 4.18 | 114,903 |
| History by Letter - O | 0 | - | 4.32 | 99,905 |
| History by Letter - P | 0 | - | 4.36 | 108,266 |
| History by Letter - Q | 0 | - | 4.34 | 80,650 |
| History by Letter - R | 0 | - | 4.26 | 122,626 |
| History by Letter - T | 0 | - | 4.39 | 105,645 |
| History by Letter - U | 0 | - | 4.19 | 101,165 |
| History by Letter - V | 0 | - | 4.27 | 81,089 |
| History by Letter - Y | 0 | - | 4.27 | 87,601 |
| History by Letter - Z | 0 | - | 4.20 | 77,340 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,315 |
| History Containing the Letter X | 0 | - | 4.47 | 27,120 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 82,782 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 108,607 |
| Middle East A-Z | 0 | - | 4.47 | 46,200 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.46 | 44,478 |
| Military History A-Z | 0 | - | 4.20 | 21,222 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,329 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,711 |
| People in History A-Z #5 | 0 | - | 4.09 | 32,080 |
| Double Letters A-Z | 0 | - | 4.51 | 27,204 |
| Animals A-Z #1 | 0 | - | 4.40 | 93,845 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,482 |
| Canada A-Z | 0 | - | 4.73 | 32,927 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,584 |
| Territory Changes in World War I | 0 | - | 4.87 | 47,033 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,785 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,755 |
| History Ending in Z | 0 | - | 4.35 | 13,573 |
| People Depicted in Paintings | 0 | - | 4.55 | 44,768 |
| WWII A-Z #1 | 0 | - | 4.73 | 103,236 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,810 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,152 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,908 |
| NATO Military Alphabet | 0 | - | 4.98 | 562,965 |
| Religion A-Z #2 | 0 | - | 4.41 | 37,089 |
| Geography by Letter - A | 0 | - | 4.74 | 212,492 |
| Geography by Letter - B | 0 | - | 4.56 | 185,481 |
| Geography by Letter - H | 0 | - | 4.69 | 151,025 |
| Geography by Letter - C | 0 | - | 4.48 | 159,455 |
| Geography by Letter - D | 0 | - | 4.50 | 151,447 |
| Geography by Letter - E | 0 | - | 4.42 | 148,279 |
| Geography by Letter - I | 0 | - | 4.42 | 122,556 |
| Geography by Letter - K | 0 | - | 4.54 | 118,908 |
| Geography by Letter - L | 0 | - | 4.44 | 149,379 |
| Geography by Letter - M | 0 | - | 4.49 | 119,392 |
| Geography by Letter - N | 0 | - | 4.51 | 127,756 |
| Geography by Letter - P | 0 | - | 4.47 | 176,678 |
| Geography by Letter - R | 0 | - | 4.43 | 132,382 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 141,215 |
| Geography by Letter - U | 0 | - | 4.53 | 143,705 |
| Asian Geography By Letter - K | 0 | - | 4.75 | 58,287 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,738 |
| American Football A-Z | 0 | - | 4.26 | 14,548 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,139 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,499 |
| Geography A-Z #2 | 0 | - | 4.46 | 53,071 |
| Switzerland A-Z | 0 | - | 4.45 | 25,736 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,468 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,737 |
| Movies that Start with G | 0 | - | 4.49 | 68,746 |
| Movies that Start with I | 0 | - | 4.41 | 65,351 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,427 |
| Empires by Maps | 0 | - | 4.98 | 121,419 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,649 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,701 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,900 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 53,996 |
| WWI... or WWII? | 0 | - | 4.85 | 142,985 |
| Famous Battles Quiz | 0 | - | 4.21 | 49,082 |
| Name the War | 0 | - | 4.37 | 202,600 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,608 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,397 |
| Famous Families #1 | 0 | - | 4.20 | 83,699 |
| Names for Warriors | 0 | - | 4.40 | 37,022 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,384 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,526 |
| 2010s Decade Quiz | 0 | - | 4.53 | 103,233 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,440 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,535 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,739 |
| Countries by Military Spending | 0 | - | 4.93 | 178,729 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 38,465 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 121,455 |
| Animals that Start with L | 0 | - | 4.47 | 102,338 |
| Animals that Start with P | 0 | - | 4.45 | 86,387 |
| Animals that Start with S | 0 | - | 4.49 | 87,584 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,901 |
| Geography by Letter on the World Map - C | 0 | - | 4.77 | 118,312 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,443 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,441 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,200 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,435 |
| Brand Logos That Start With D | 0 | - | 4.36 | 61,992 |
| Brand Logos That Start With C | 0 | - | 4.20 | 49,987 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,679 |
| Brand Logos That Start With M | 0 | - | 4.38 | 63,316 |
| Brand Logos That Start With S | 0 | - | 4.37 | 58,080 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,322,720 |
| Disney A-Z | 0 | - | 4.37 | 87,393 |
| Literature by Letter - A | 0 | - | 4.24 | 32,298 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,377 |
| Companies A-Z | 0 | - | 4.30 | 42,751 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,707 |
| Geography by Letter - G | 0 | - | 4.33 | 126,873 |
| Geography by Letter - F | 0 | - | 4.28 | 138,603 |
| Geography by Letter - J | 0 | - | 4.35 | 123,477 |
| Geography by Letter - O | 0 | - | 4.37 | 130,291 |
| Geography by Letter - V | 0 | - | 4.39 | 122,347 |
| Geography by Letter - W | 0 | - | 4.39 | 115,308 |
| Geography by Letter - Y | 0 | - | 4.39 | 112,005 |
| Geography by Letter - Z | 0 | - | 4.11 | 82,041 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,928 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,349 |
| Video Games A-Z | 0 | - | 4.05 | 39,167 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,356 |
| South America A-Z | 0 | - | 4.15 | 10,935 |
| Movies that Start with A | 0 | - | 4.13 | 62,071 |
| Movies that Start with C | 0 | - | 4.30 | 62,059 |
| Movies that Start with B | 0 | - | 4.36 | 85,631 |
| Movies that Start with D | 0 | - | 4.34 | 68,604 |
| Movies that Start with E | 0 | - | 4.13 | 68,547 |
| Movies that Start with J | 0 | - | 4.18 | 76,361 |
| Movies that Start with L | 0 | - | 4.16 | 60,557 |
| Movies that Start with M | 0 | - | 4.28 | 48,358 |
| Movies that Start with N | 0 | - | 4.02 | 41,355 |
| Movies that Start with P | 0 | - | 4.25 | 54,252 |
| Movies that Start with R | 0 | - | 4.17 | 46,770 |
| Movies that Start with W | 0 | - | 4.07 | 44,347 |
| Movies that Start with T | 0 | - | 4.34 | 49,422 |
| Movies that Start with S | 0 | - | 4.35 | 56,599 |
| Movies that Start with F | 0 | - | 4.13 | 69,030 |
| Music by Letter - F | 0 | - | 4.47 | 27,097 |
| Music by Letter - A | 0 | - | 4.61 | 31,488 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,334 |
| Metals of Antiquity | 0 | - | 4.95 | 93,762 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,985 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 709,463 |
| Notable People of WWII | 0 | - | 4.53 | 86,100 |
| WWII Trivia #2 | 0 | - | 4.52 | 104,408 |
| World War I Quiz | 0 | - | 4.78 | 101,590 |
| WWI A-Z | 0 | - | 4.51 | 38,514 |
| Oldest Things | 0 | - | 3.92 | 65,696 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,849 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,926 |
| 1970s Decade Quiz | 0 | - | 4.20 | 53,459 |
| 2000s Decade Quiz | 0 | - | 4.23 | 122,538 |
| 1980s Decade Quiz | 0 | - | 4.38 | 85,535 |
| 1850s Decade Quiz | 0 | - | 4.42 | 35,329 |
| 1790s Decade Quiz | 0 | - | 4.55 | 33,779 |
| 1800s Decade Quiz | 0 | - | 4.47 | 32,046 |
| Years in History #1 - Multiple Choice | 0 | - | 4.82 | 70,510 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.41 | 30,774 |
| Star Wars A-Z | 0 | - | 4.46 | 88,633 |
