| 19th Century A-Z | 0 | - | 4.77 | 47,348 |
| 18th Century A-Z | 0 | - | 4.54 | 43,227 |
| 16th Century A-Z | 0 | - | 4.58 | 24,937 |
| 15th Century A-Z | 0 | - | 4.49 | 23,957 |
| 17th Century A-Z | 0 | - | 4.78 | 34,674 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,738 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,991 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,493 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,703 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,234 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 180,709 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 73,076 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 237,594 |
| Name an Official Language A-Z | 0 | - | 4.91 | 176,242 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,402 |
| Empires A-Z | 0 | - | 4.52 | 45,258 |
| History by Letter - A | 0 | - | 4.51 | 153,389 |
| History by Letter - B | 0 | - | 4.45 | 172,692 |
| History by Letter - C | 0 | - | 4.70 | 171,975 |
| History by Letter - E | 0 | - | 4.51 | 141,001 |
| History by Letter - G | 0 | - | 4.46 | 122,470 |
| History by Letter - H | 0 | - | 4.45 | 137,082 |
| History by Letter - J | 0 | - | 4.51 | 154,463 |
| History by Letter - N | 0 | - | 4.45 | 104,345 |
| History by Letter - S | 0 | - | 4.47 | 94,639 |
| History by Letter - W | 0 | - | 4.45 | 109,830 |
| History by Letter - M | 0 | - | 4.54 | 120,154 |
| History by Letter - K | 0 | - | 4.50 | 101,636 |
| History by Letter - L | 0 | - | 4.50 | 112,398 |
| History by Letter - I | 0 | - | 4.46 | 104,670 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 153,662 |
| Geography by Letter - T | 0 | - | 4.84 | 154,307 |
| People in History A-Z #1 | 0 | - | 4.63 | 99,147 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,191 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,240 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 68,383 |
| Islands A-Z | 0 | - | 4.46 | 125,520 |
| World Cities A-Z by Clue #2 | 0 | - | 4.41 | 59,255 |
| Human Body A-Z | 0 | - | 4.51 | 129,331 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 41,762 |
| Animals A-Z #1 | 0 | - | 4.41 | 93,719 |
| Africa A-Z | 0 | - | 4.57 | 46,663 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.69 | 57,920 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,424 |
| History by Letter - D | 0 | - | 4.40 | 138,127 |
| History by Letter - F | 0 | - | 4.18 | 114,731 |
| History by Letter - O | 0 | - | 4.32 | 99,748 |
| History by Letter - P | 0 | - | 4.36 | 108,096 |
| History by Letter - Q | 0 | - | 4.34 | 80,519 |
| History by Letter - R | 0 | - | 4.26 | 122,457 |
| History by Letter - T | 0 | - | 4.39 | 105,509 |
| History by Letter - U | 0 | - | 4.19 | 101,027 |
| History by Letter - V | 0 | - | 4.27 | 80,957 |
| History by Letter - Y | 0 | - | 4.27 | 87,474 |
| History by Letter - Z | 0 | - | 4.20 | 77,224 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,282 |
| History Containing the Letter X | 0 | - | 4.47 | 27,076 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 82,440 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 108,211 |
| Middle East A-Z | 0 | - | 4.47 | 46,124 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,412 |
| Military History A-Z | 0 | - | 4.20 | 21,189 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 74,182 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,519 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,991 |
| Double Letters A-Z | 0 | - | 4.51 | 27,171 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,421 |
| Canada A-Z | 0 | - | 4.73 | 32,879 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,490 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,877 |
| Same Start and End Letter - History #1 | 0 | - | 4.18 | 24,757 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,710 |
| People Depicted in Paintings | 0 | - | 4.55 | 44,696 |
| WWII A-Z #1 | 0 | - | 4.73 | 103,104 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,739 |
| People in History A-Z #4 | 0 | - | 4.11 | 23,060 |
| NATO Military Alphabet | 0 | - | 4.98 | 561,152 |
| Religion A-Z #2 | 0 | - | 4.41 | 37,032 |
| Geography by Letter - A | 0 | - | 4.74 | 212,014 |
| Geography by Letter - B | 0 | - | 4.56 | 185,008 |
| Geography by Letter - H | 0 | - | 4.69 | 150,646 |
| Geography by Letter - C | 0 | - | 4.47 | 159,036 |
| Geography by Letter - D | 0 | - | 4.50 | 150,853 |
| Geography by Letter - E | 0 | - | 4.42 | 147,912 |
| Geography by Letter - I | 0 | - | 4.42 | 122,262 |
| Geography by Letter - K | 0 | - | 4.53 | 118,624 |
| Geography by Letter - L | 0 | - | 4.43 | 148,814 |
| Geography by Letter - M | 0 | - | 4.49 | 118,887 |
| Geography by Letter - N | 0 | - | 4.51 | 127,450 |
| Geography by Letter - P | 0 | - | 4.47 | 176,343 |
| Geography by Letter - R | 0 | - | 4.43 | 132,002 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 140,875 |
| Geography by Letter - U | 0 | - | 4.53 | 143,406 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 58,207 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,688 |
| American Football A-Z | 0 | - | 4.26 | 14,533 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,116 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,400 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,980 |
| Switzerland A-Z | 0 | - | 4.45 | 25,678 |
| Geography A-Z #5 | 0 | - | 4.44 | 37,403 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,659 |
| Movies that Start with G | 0 | - | 4.49 | 68,609 |
| Movies that Start with I | 0 | - | 4.41 | 65,225 |
| Brand Logos That Start with A | 0 | - | 4.52 | 70,586 |
| Former Countries by Territory Map | 0 | - | 4.96 | 103,048 |
| Empires by Maps | 0 | - | 4.98 | 120,860 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 119,435 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,504 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,820 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 53,841 |
| WWI... or WWII? | 0 | - | 4.85 | 142,528 |
| Famous Battles Quiz | 0 | - | 4.21 | 49,023 |
| Name the War | 0 | - | 4.37 | 201,835 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,566 |
| Famous Firsts #1 | 0 | - | 4.40 | 69,109 |
| Famous Families #1 | 0 | - | 4.20 | 83,647 |
| Names for Warriors | 0 | - | 4.40 | 36,964 |
| Famous Firsts #2 | 0 | - | 4.01 | 81,079 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,459 |
| 2010s Decade Quiz | 0 | - | 4.53 | 103,045 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,401 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,499 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,710 |
| Countries by Military Spending | 0 | - | 4.93 | 178,301 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 38,226 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 121,067 |
| Animals that Start with L | 0 | - | 4.47 | 102,215 |
| Animals that Start with P | 0 | - | 4.45 | 86,247 |
| Animals that Start with S | 0 | - | 4.49 | 87,456 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,607 |
| Geography by Letter on the World Map - C | 0 | - | 4.77 | 117,774 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,354 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,393 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,169 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,319,098 |
| Disney A-Z | 0 | - | 4.37 | 87,232 |
| Literature by Letter - A | 0 | - | 4.24 | 32,199 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,324 |
| Companies A-Z | 0 | - | 4.30 | 42,721 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,662 |
| Geography by Letter - G | 0 | - | 4.33 | 126,554 |
| Geography by Letter - F | 0 | - | 4.27 | 138,113 |
| Geography by Letter - J | 0 | - | 4.34 | 123,178 |
| Geography by Letter - O | 0 | - | 4.37 | 130,002 |
| Geography by Letter - V | 0 | - | 4.39 | 122,036 |
| Geography by Letter - W | 0 | - | 4.39 | 115,061 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,768 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,814 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,683 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,303 |
| Video Games A-Z | 0 | - | 4.08 | 39,061 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,306 |
| South America A-Z | 0 | - | 4.13 | 10,919 |
| Movies that Start with A | 0 | - | 4.13 | 61,935 |
| Movies that Start with C | 0 | - | 4.30 | 61,926 |
| Movies that Start with B | 0 | - | 4.36 | 85,296 |
| Movies that Start with D | 0 | - | 4.34 | 68,495 |
| Movies that Start with E | 0 | - | 4.13 | 68,427 |
| Movies that Start with J | 0 | - | 4.18 | 76,234 |
| Movies that Start with L | 0 | - | 4.16 | 60,472 |
| Movies that Start with M | 0 | - | 4.28 | 48,278 |
| Movies that Start with N | 0 | - | 4.02 | 41,292 |
| Movies that Start with P | 0 | - | 4.25 | 54,189 |
| Movies that Start with R | 0 | - | 4.17 | 46,690 |
| Movies that Start with W | 0 | - | 4.07 | 44,288 |
| Movies that Start with T | 0 | - | 4.34 | 49,354 |
| Movies that Start with S | 0 | - | 4.35 | 56,520 |
| Movies that Start with F | 0 | - | 4.13 | 68,919 |
| Music by Letter - F | 0 | - | 4.48 | 27,044 |
| Music by Letter - A | 0 | - | 4.61 | 31,427 |
| Brand Logos That Start With B | 0 | - | 4.38 | 60,174 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,743 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,818 |
| Brand Logos That Start With L | 0 | - | 4.39 | 61,387 |
| Brand Logos That Start With M | 0 | - | 4.40 | 63,045 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,840 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,284 |
| Metals of Antiquity | 0 | - | 4.95 | 93,571 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,829 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 708,315 |
| Notable People of WWII | 0 | - | 4.53 | 85,999 |
| WWII Trivia #2 | 0 | - | 4.52 | 104,275 |
| World War I Quiz | 0 | - | 4.78 | 101,422 |
| WWI A-Z | 0 | - | 4.51 | 38,414 |
| Oldest Things | 0 | - | 3.92 | 65,669 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,830 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,668 |
| 1970s Decade Quiz | 0 | - | 4.20 | 53,390 |
| 2000s Decade Quiz | 0 | - | 4.23 | 122,327 |
| 1980s Decade Quiz | 0 | - | 4.37 | 85,078 |
| 1850s Decade Quiz | 0 | - | 4.42 | 35,291 |
| 1790s Decade Quiz | 0 | - | 4.55 | 33,733 |
| 1800s Decade Quiz | 0 | - | 4.47 | 32,010 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,378 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.41 | 30,754 |
| Star Wars A-Z | 0 | - | 4.46 | 88,401 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,540 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,223 |
| Musical Acts by Letter - J | 0 | - | 4.17 | 77,525 |
