| 19th Century A-Z | 0 | - | 4.77 | 47,160 |
| 18th Century A-Z | 0 | - | 4.54 | 43,049 |
| 16th Century A-Z | 0 | - | 4.58 | 24,799 |
| 15th Century A-Z | 0 | - | 4.49 | 23,841 |
| 14th Century A-Z | 0 | - | 4.41 | 24,260 |
| 17th Century A-Z | 0 | - | 4.78 | 34,542 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,151 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,020 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,820 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,626 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,132 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 179,913 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,565 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 236,139 |
| Name an Official Language A-Z | 0 | - | 4.91 | 175,591 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,114 |
| Empires A-Z | 0 | - | 4.51 | 45,071 |
| History by Letter - A | 0 | - | 4.51 | 152,740 |
| History by Letter - B | 0 | - | 4.45 | 171,972 |
| History by Letter - C | 0 | - | 4.70 | 171,251 |
| History by Letter - E | 0 | - | 4.51 | 140,433 |
| History by Letter - G | 0 | - | 4.46 | 121,938 |
| History by Letter - H | 0 | - | 4.45 | 136,400 |
| History by Letter - J | 0 | - | 4.51 | 153,846 |
| History by Letter - N | 0 | - | 4.45 | 103,963 |
| History by Letter - S | 0 | - | 4.47 | 94,258 |
| History by Letter - W | 0 | - | 4.45 | 109,193 |
| History by Letter - M | 0 | - | 4.54 | 119,717 |
| History by Letter - K | 0 | - | 4.50 | 101,250 |
| History by Letter - L | 0 | - | 4.50 | 111,970 |
| History by Letter - I | 0 | - | 4.46 | 104,094 |
| Countries that Start with a Vowel | 0 | - | 4.99 | 129,834 |
| Geography by Letter - T | 0 | - | 4.84 | 153,516 |
| People in History A-Z #1 | 0 | - | 4.61 | 98,902 |
| People in History A-Z #2 | 0 | - | 4.47 | 55,026 |
| People in History A-Z #3 | 0 | - | 4.44 | 46,118 |
| World Cities A-Z by Clue #1 | 0 | - | 4.50 | 67,818 |
| Islands A-Z | 0 | - | 4.46 | 117,310 |
| Human Body A-Z | 0 | - | 4.51 | 128,984 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 35,340 |
| Animals A-Z #1 | 0 | - | 4.41 | 93,130 |
| Africa A-Z | 0 | - | 4.57 | 46,549 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.68 | 57,486 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,939 |
| History by Letter - D | 0 | - | 4.39 | 137,411 |
| History by Letter - F | 0 | - | 4.18 | 114,115 |
| History by Letter - O | 0 | - | 4.32 | 99,410 |
| History by Letter - P | 0 | - | 4.39 | 107,748 |
| History by Letter - Q | 0 | - | 4.34 | 80,257 |
| History by Letter - R | 0 | - | 4.26 | 122,072 |
| History by Letter - T | 0 | - | 4.39 | 105,184 |
| History by Letter - U | 0 | - | 4.19 | 100,704 |
| History by Letter - V | 0 | - | 4.27 | 80,690 |
| History by Letter - Y | 0 | - | 4.27 | 87,196 |
| History by Letter - Z | 0 | - | 4.20 | 76,975 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,206 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 81,960 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 107,659 |
| Middle East A-Z | 0 | - | 4.47 | 45,953 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,281 |
| Military History A-Z | 0 | - | 4.20 | 21,123 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,921 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,266 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,902 |
| Double Letters A-Z | 0 | - | 4.51 | 27,126 |
| World Cities A-Z by Clue #2 | 0 | - | 4.40 | 58,784 |
| Animals A-Z #2 | 0 | - | 4.12 | 66,218 |
| Canada A-Z | 0 | - | 4.73 | 32,755 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,340 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,608 |
| Same Start and End Letter - History #1 | 0 | - | 4.17 | 24,721 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,634 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,554 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,796 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,557 |
| People in History A-Z #4 | 0 | - | 4.10 | 22,998 |
| NATO Military Alphabet | 0 | - | 4.98 | 557,798 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 800,931 |
| Religion A-Z #2 | 0 | - | 4.41 | 36,958 |
| Geography by Letter - A | 0 | - | 4.74 | 211,300 |
| Geography by Letter - B | 0 | - | 4.56 | 184,346 |
| Geography by Letter - H | 0 | - | 4.69 | 150,105 |
| Geography by Letter - C | 0 | - | 4.47 | 158,454 |
| Geography by Letter - D | 0 | - | 4.50 | 150,310 |
| Geography by Letter - E | 0 | - | 4.42 | 147,401 |
| Geography by Letter - I | 0 | - | 4.42 | 121,835 |
| Geography by Letter - K | 0 | - | 4.53 | 117,942 |
| Geography by Letter - L | 0 | - | 4.43 | 148,312 |
| Geography by Letter - M | 0 | - | 4.49 | 118,460 |
| Geography by Letter - N | 0 | - | 4.51 | 126,867 |
| Geography by Letter - P | 0 | - | 4.47 | 175,833 |
| Geography by Letter - R | 0 | - | 4.43 | 131,387 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 140,341 |
| Geography by Letter - U | 0 | - | 4.53 | 142,833 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 58,095 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,595 |
| American Football A-Z | 0 | - | 4.26 | 14,500 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 17,077 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,257 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,841 |
| Switzerland A-Z | 0 | - | 4.45 | 25,607 |
| Geography A-Z #5 | 0 | - | 4.47 | 37,309 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,505 |
| Movies that Start with G | 0 | - | 4.49 | 68,452 |
| Movies that Start with I | 0 | - | 4.41 | 65,093 |
| Brand Logos That Start with A | 0 | - | 4.52 | 69,969 |
| Brand Logos That Start With M | 0 | - | 4.45 | 62,443 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,426 |
| Empires by Maps | 0 | - | 4.98 | 119,799 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,871 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 105,086 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,662 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,548 |
| WWI... or WWII? | 0 | - | 4.85 | 141,738 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,944 |
| Name the War | 0 | - | 4.37 | 201,369 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,498 |
| Famous Firsts #1 | 0 | - | 4.40 | 68,991 |
| Famous Families #1 | 0 | - | 4.20 | 83,543 |
| Names for Warriors | 0 | - | 4.40 | 36,892 |
| Famous Firsts #2 | 0 | - | 4.01 | 80,981 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,300 |
| 2010s Decade Quiz | 0 | - | 4.53 | 102,132 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,323 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,440 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,661 |
| Countries by Military Spending | 0 | - | 4.93 | 177,226 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,835 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 120,305 |
| Animals that Start with L | 0 | - | 4.47 | 101,755 |
| Animals that Start with P | 0 | - | 4.45 | 85,996 |
| Animals that Start with S | 0 | - | 4.49 | 87,198 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 90,172 |
| Geography by Letter on the World Map - C | 0 | - | 4.78 | 117,244 |
| Ethnic Groups A-Z | 0 | - | 4.51 | 42,210 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,306 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 15,106 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,312,687 |
| Disney A-Z | 0 | - | 4.37 | 86,919 |
| Literature by Letter - A | 0 | - | 4.23 | 31,872 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,125 |
| Companies A-Z | 0 | - | 4.30 | 42,673 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,591 |
| Geography by Letter - G | 0 | - | 4.35 | 126,111 |
| Geography by Letter - F | 0 | - | 4.27 | 137,680 |
| Geography by Letter - J | 0 | - | 4.34 | 122,740 |
| Geography by Letter - O | 0 | - | 4.37 | 129,581 |
| Geography by Letter - V | 0 | - | 4.39 | 121,549 |
| Geography by Letter - W | 0 | - | 4.39 | 114,692 |
| Geography by Letter - Y | 0 | - | 4.39 | 111,175 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,501 |
| Geography by Letter - Q | 0 | - | 4.38 | 69,340 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.15 | 35,217 |
| Video Games A-Z | 0 | - | 4.08 | 38,898 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,195 |
| South America A-Z | 0 | - | 4.13 | 10,886 |
| Movies that Start with A | 0 | - | 4.13 | 61,809 |
| Movies that Start with C | 0 | - | 4.30 | 61,769 |
| Movies that Start with B | 0 | - | 4.36 | 85,128 |
| Movies that Start with D | 0 | - | 4.34 | 68,377 |
| Movies that Start with E | 0 | - | 4.13 | 68,309 |
| Movies that Start with J | 0 | - | 4.18 | 76,092 |
| Movies that Start with L | 0 | - | 4.16 | 60,364 |
| Movies that Start with M | 0 | - | 4.28 | 48,179 |
| Movies that Start with N | 0 | - | 4.02 | 41,216 |
| Movies that Start with P | 0 | - | 4.25 | 54,116 |
| Movies that Start with R | 0 | - | 4.17 | 46,588 |
| Movies that Start with W | 0 | - | 4.07 | 44,225 |
| Movies that Start with T | 0 | - | 4.34 | 49,244 |
| Movies that Start with S | 0 | - | 4.35 | 56,413 |
| Movies that Start with F | 0 | - | 4.13 | 68,786 |
| Music by Letter - F | 0 | - | 4.48 | 26,957 |
| Music by Letter - A | 0 | - | 4.61 | 31,318 |
| Brand Logos That Start With B | 0 | - | 4.38 | 59,757 |
| Brand Logos That Start With D | 0 | - | 4.37 | 61,281 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,457 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,848 |
| Brand Logos That Start With S | 0 | - | 4.37 | 57,326 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,177 |
| Metals of Antiquity | 0 | - | 4.94 | 93,246 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,535 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,353 |
| Notable People of WWII | 0 | - | 4.53 | 85,555 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,827 |
| World War I Quiz | 0 | - | 4.78 | 101,095 |
| WWI A-Z | 0 | - | 4.50 | 38,235 |
| Oldest Things | 0 | - | 3.92 | 65,638 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,808 |
| Famous Firsts #3 - The United States | 0 | - | 4.19 | 14,621 |
| 1970s Decade Quiz | 0 | - | 4.20 | 52,811 |
| 2000s Decade Quiz | 0 | - | 4.23 | 121,274 |
| 1980s Decade Quiz | 0 | - | 4.38 | 77,039 |
| 1850s Decade Quiz | 0 | - | 4.42 | 35,137 |
| 1790s Decade Quiz | 0 | - | 4.55 | 33,582 |
| 1800s Decade Quiz | 0 | - | 4.47 | 31,878 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,143 |
| Star Wars A-Z | 0 | - | 4.46 | 87,939 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 156,670 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 67,040 |
| Musical Acts by Letter - J | 0 | - | 4.17 | 77,375 |
