| 19th Century A-Z | 0 | - | 4.77 | 47,376 |
| 18th Century A-Z | 0 | - | 4.54 | 43,245 |
| 15th Century A-Z | 0 | - | 4.49 | 23,968 |
| 14th Century A-Z | 0 | - | 4.41 | 24,434 |
| 17th Century A-Z | 0 | - | 4.78 | 34,690 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,808 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,113 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,580 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,840 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,380 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 180,795 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 73,152 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 237,774 |
| Name an Official Language A-Z | 0 | - | 4.91 | 176,360 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,453 |
| Empires A-Z | 0 | - | 4.52 | 45,290 |
| History by Letter - A | 0 | - | 4.51 | 153,474 |
| History by Letter - B | 0 | - | 4.45 | 172,787 |
| History by Letter - C | 0 | - | 4.70 | 172,074 |
| History by Letter - E | 0 | - | 4.51 | 141,077 |
| History by Letter - G | 0 | - | 4.46 | 122,528 |
| History by Letter - H | 0 | - | 4.45 | 137,163 |
| History by Letter - J | 0 | - | 4.51 | 154,538 |
| History by Letter - N | 0 | - | 4.45 | 104,402 |
| History by Letter - S | 0 | - | 4.47 | 94,698 |
| History by Letter - W | 0 | - | 4.45 | 109,897 |
| History by Letter - M | 0 | - | 4.54 | 120,207 |
| History by Letter - K | 0 | - | 4.50 | 101,692 |
| History by Letter - L | 0 | - | 4.50 | 112,461 |
| History by Letter - I | 0 | - | 4.46 | 104,730 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 154,193 |
| Geography by Letter - T | 0 | - | 4.84 | 154,453 |
| People in History A-Z #1 | 0 | - | 4.63 | 99,207 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,230 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,269 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 68,459 |
| Islands A-Z | 0 | - | 4.46 | 125,915 |
| World Cities A-Z by Clue #2 | 0 | - | 4.41 | 59,318 |
| Human Body A-Z | 0 | - | 4.51 | 129,403 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 42,496 |
| Animals A-Z #1 | 0 | - | 4.40 | 93,769 |
| Africa A-Z | 0 | - | 4.57 | 46,688 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.70 | 57,986 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,518 |
| History by Letter - D | 0 | - | 4.40 | 138,201 |
| History by Letter - F | 0 | - | 4.18 | 114,787 |
| History by Letter - O | 0 | - | 4.32 | 99,799 |
| History by Letter - P | 0 | - | 4.36 | 108,161 |
| History by Letter - Q | 0 | - | 4.34 | 80,562 |
| History by Letter - R | 0 | - | 4.26 | 122,506 |
| History by Letter - T | 0 | - | 4.39 | 105,558 |
| History by Letter - U | 0 | - | 4.19 | 101,073 |
| History by Letter - V | 0 | - | 4.27 | 81,000 |
| History by Letter - Y | 0 | - | 4.27 | 87,513 |
| History by Letter - Z | 0 | - | 4.20 | 77,263 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,293 |
| History Containing the Letter X | 0 | - | 4.47 | 27,098 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 82,584 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 108,394 |
| Middle East A-Z | 0 | - | 4.47 | 46,158 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,435 |
| Military History A-Z | 0 | - | 4.20 | 21,196 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,234 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,587 |
| People in History A-Z #5 | 0 | - | 4.09 | 32,012 |
| Double Letters A-Z | 0 | - | 4.51 | 27,177 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,441 |
| Canada A-Z | 0 | - | 4.73 | 32,897 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,517 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,934 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,766 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,722 |
| History Ending in Z | 0 | - | 4.35 | 13,558 |
| People Depicted in Paintings | 0 | - | 4.55 | 44,727 |
| WWII A-Z #1 | 0 | - | 4.73 | 103,141 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,763 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,084 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,696 |
| NATO Military Alphabet | 0 | - | 4.98 | 561,795 |
| Religion A-Z #2 | 0 | - | 4.41 | 37,051 |
| Geography by Letter - A | 0 | - | 4.74 | 212,164 |
| Geography by Letter - B | 0 | - | 4.56 | 185,166 |
| Geography by Letter - H | 0 | - | 4.69 | 150,754 |
| Geography by Letter - C | 0 | - | 4.47 | 159,166 |
| Geography by Letter - D | 0 | - | 4.50 | 151,190 |
| Geography by Letter - E | 0 | - | 4.42 | 148,036 |
| Geography by Letter - I | 0 | - | 4.42 | 122,343 |
| Geography by Letter - K | 0 | - | 4.53 | 118,700 |
| Geography by Letter - L | 0 | - | 4.43 | 148,908 |
| Geography by Letter - M | 0 | - | 4.49 | 118,982 |
| Geography by Letter - N | 0 | - | 4.51 | 127,533 |
| Geography by Letter - P | 0 | - | 4.47 | 176,428 |
| Geography by Letter - R | 0 | - | 4.43 | 132,120 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 140,966 |
| Geography by Letter - U | 0 | - | 4.53 | 143,498 |
| Asian Geography By Letter - K | 0 | - | 4.75 | 58,240 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,711 |
| American Football A-Z | 0 | - | 4.26 | 14,539 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,125 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,426 |
| Geography A-Z #2 | 0 | - | 4.46 | 53,005 |
| Switzerland A-Z | 0 | - | 4.45 | 25,696 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,428 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,684 |
| Movies that Start with G | 0 | - | 4.49 | 68,637 |
| Movies that Start with I | 0 | - | 4.41 | 65,249 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,168 |
| Empires by Maps | 0 | - | 4.98 | 121,028 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,513 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,576 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,851 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 53,900 |
| WWI... or WWII? | 0 | - | 4.85 | 142,691 |
| Famous Battles Quiz | 0 | - | 4.21 | 49,045 |
| Name the War | 0 | - | 4.37 | 202,418 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,581 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,270 |
| Famous Families #1 | 0 | - | 4.20 | 83,665 |
| Names for Warriors | 0 | - | 4.40 | 36,988 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,254 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,482 |
| 2010s Decade Quiz | 0 | - | 4.53 | 103,124 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,413 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,511 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,723 |
| Countries by Military Spending | 0 | - | 4.93 | 178,454 |
| Classic Novels by Plot #2 | 0 | - | 4.86 | 38,288 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 121,210 |
| Animals that Start with L | 0 | - | 4.47 | 102,269 |
| Animals that Start with P | 0 | - | 4.45 | 86,323 |
| Animals that Start with S | 0 | - | 4.49 | 87,525 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,743 |
| Geography by Letter on the World Map - C | 0 | - | 4.77 | 118,128 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,380 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,417 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,176 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,281 |
| Brand Logos That Start With D | 0 | - | 4.35 | 61,827 |
| Brand Logos That Start With C | 0 | - | 4.20 | 49,875 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,466 |
| Brand Logos That Start With M | 0 | - | 4.40 | 63,139 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,922 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,320,332 |
| Disney A-Z | 0 | - | 4.37 | 87,294 |
| Literature by Letter - A | 0 | - | 4.24 | 32,240 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,343 |
| Companies A-Z | 0 | - | 4.30 | 42,724 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,681 |
| Geography by Letter - G | 0 | - | 4.33 | 126,650 |
| Geography by Letter - F | 0 | - | 4.27 | 138,209 |
| Geography by Letter - J | 0 | - | 4.34 | 123,257 |
| Geography by Letter - O | 0 | - | 4.37 | 130,087 |
| Geography by Letter - V | 0 | - | 4.39 | 122,137 |
| Geography by Letter - W | 0 | - | 4.39 | 115,143 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,840 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,892 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,754 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,313 |
| Video Games A-Z | 0 | - | 4.05 | 39,108 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,323 |
| South America A-Z | 0 | - | 4.13 | 10,926 |
| Movies that Start with A | 0 | - | 4.13 | 61,951 |
| Movies that Start with C | 0 | - | 4.30 | 61,943 |
| Movies that Start with B | 0 | - | 4.36 | 85,330 |
| Movies that Start with D | 0 | - | 4.34 | 68,513 |
| Movies that Start with E | 0 | - | 4.13 | 68,445 |
| Movies that Start with J | 0 | - | 4.18 | 76,260 |
| Movies that Start with L | 0 | - | 4.16 | 60,489 |
| Movies that Start with M | 0 | - | 4.28 | 48,297 |
| Movies that Start with N | 0 | - | 4.02 | 41,306 |
| Movies that Start with P | 0 | - | 4.25 | 54,200 |
| Movies that Start with R | 0 | - | 4.17 | 46,706 |
| Movies that Start with W | 0 | - | 4.07 | 44,300 |
| Movies that Start with T | 0 | - | 4.34 | 49,370 |
| Movies that Start with S | 0 | - | 4.35 | 56,543 |
| Movies that Start with F | 0 | - | 4.13 | 68,936 |
| Music by Letter - F | 0 | - | 4.48 | 27,056 |
| Music by Letter - A | 0 | - | 4.61 | 31,446 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,300 |
| Metals of Antiquity | 0 | - | 4.95 | 93,638 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,890 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 708,712 |
| Notable People of WWII | 0 | - | 4.53 | 86,044 |
| WWII Trivia #2 | 0 | - | 4.52 | 104,324 |
| World War I Quiz | 0 | - | 4.78 | 101,466 |
| WWI A-Z | 0 | - | 4.51 | 38,449 |
| Oldest Things | 0 | - | 3.92 | 65,679 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,835 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,823 |
| 1970s Decade Quiz | 0 | - | 4.20 | 53,424 |
| 2000s Decade Quiz | 0 | - | 4.23 | 122,416 |
| 1980s Decade Quiz | 0 | - | 4.37 | 85,335 |
| 1850s Decade Quiz | 0 | - | 4.42 | 35,301 |
| 1790s Decade Quiz | 0 | - | 4.55 | 33,747 |
| 1800s Decade Quiz | 0 | - | 4.47 | 32,018 |
| Years in History #1 - Multiple Choice | 0 | - | 4.82 | 70,426 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.41 | 30,756 |
| Star Wars A-Z | 0 | - | 4.46 | 88,468 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,726 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,261 |
