| People in History A-Z #2 | 0 | - | 4.47 | 52,328 |
| People in History A-Z #3 | 0 | - | 4.48 | 43,942 |
| Empires A-Z | 0 | - | 4.49 | 42,490 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 142,761 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 187,361 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 165,638 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 183,384 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 292,901 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 173,454 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 68,960 |
| Name an Official Language A-Z | 0 | - | 4.92 | 142,863 |
| 20th Century A-Z | 0 | - | 4.50 | 47,647 |
| 19th Century A-Z | 0 | - | 4.73 | 36,715 |
| 18th Century A-Z | 0 | - | 4.60 | 33,430 |
| People in History A-Z #5 | 0 | - | 4.04 | 30,636 |
| People in History A-Z #4 | 0 | - | 4.10 | 21,844 |
| History by Letter - A | 0 | - | 4.50 | 145,046 |
| History by Letter - B | 0 | - | 4.48 | 163,600 |
| History by Letter - C | 0 | - | 4.68 | 161,784 |
| History by Letter - E | 0 | - | 4.49 | 133,283 |
| History by Letter - G | 0 | - | 4.45 | 115,802 |
| History by Letter - H | 0 | - | 4.44 | 129,655 |
| History by Letter - J | 0 | - | 4.49 | 146,399 |
| History by Letter - N | 0 | - | 4.43 | 98,546 |
| History by Letter - S | 0 | - | 4.46 | 89,323 |
| History by Letter - T | 0 | - | 4.42 | 100,756 |
| History by Letter - W | 0 | - | 4.46 | 103,765 |
| History by Letter - M | 0 | - | 4.53 | 113,910 |
| History by Letter - K | 0 | - | 4.49 | 96,557 |
| History by Letter - L | 0 | - | 4.47 | 106,743 |
| History by Letter - I | 0 | - | 4.46 | 98,997 |
| Disney A-Z | 0 | - | 4.41 | 81,935 |
| Religion A-Z #2 | 0 | - | 4.44 | 35,519 |
| A to Z: Musical Terms | 0 | - | 4.43 | 39,166 |
| Geography A-Z #2 | 0 | - | 4.46 | 50,979 |
| Geography A-Z #5 | 0 | - | 4.46 | 35,959 |
| Geography A-Z #1 | 0 | - | 4.55 | 67,589 |
| 16th Century A-Z | 0 | - | 4.57 | 16,755 |
| 15th Century A-Z | 0 | - | 4.45 | 20,919 |
| Geography by Letter - T | 0 | - | 4.84 | 143,033 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.41 | 43,029 |
| World Cities A-Z #1 | 0 | - | 4.52 | 60,422 |
| Islands A-Z | 0 | - | 4.47 | 111,109 |
| World Cities A-Z #2 | 0 | - | 4.47 | 52,928 |
| Human Body A-Z | 0 | - | 4.50 | 124,045 |
| Africa A-Z | 0 | - | 4.57 | 44,986 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.65 | 45,008 |
| Ethnic Groups A-Z | 0 | - | 4.54 | 40,320 |
| History by Letter - D | 0 | - | 4.35 | 131,314 |
| History by Letter - F | 0 | - | 4.20 | 108,763 |
| History by Letter - O | 0 | - | 4.30 | 95,068 |
| History by Letter - P | 0 | - | 4.37 | 102,815 |
| History by Letter - Q | 0 | - | 4.34 | 76,942 |
| History by Letter - R | 0 | - | 4.22 | 117,079 |
| History by Letter - U | 0 | - | 4.18 | 96,130 |
| History by Letter - V | 0 | - | 4.28 | 77,443 |
| History by Letter - Y | 0 | - | 4.24 | 83,924 |
| History by Letter - Z | 0 | - | 4.20 | 74,179 |
| The 3rd and 4th Century | 0 | - | 4.59 | 25,461 |
| Companies A-Z | 0 | - | 4.30 | 41,989 |
| Religion A-Z #1 | 0 | - | 4.31 | 60,500 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.86 | 75,693 |
| Geography by Letter on the World Map - C | 0 | - | 4.81 | 110,381 |
| Video Games A-Z | 0 | - | 4.03 | 36,803 |
| Geography A-Z #3 | 0 | - | 4.22 | 37,875 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.44 | 42,764 |
| Famous Firsts #1 | 0 | - | 4.42 | 67,054 |
| Time Magazine Person of the Year | 0 | - | 4.55 | 69,643 |
| Invasions | 0 | - | 4.62 | 93,013 |
| Names for Warriors | 0 | - | 4.41 | 35,507 |
| 14th Century A-Z | 0 | - | 4.35 | 16,568 |
| Military History A-Z | 0 | - | 4.19 | 20,295 |
| Double Letters A-Z | 0 | - | 4.49 | 26,432 |
| Asian Cities A-Z | 0 | - | 4.51 | 30,794 |
| Animals A-Z #1 | 0 | - | 4.38 | 89,638 |
| Animals A-Z #2 | 0 | - | 4.12 | 64,445 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 223,861 |
| Normandy D-Day Beaches | 0 | - | 4.81 | 38,240 |
| Territory Changes in World War I | 0 | - | 4.88 | 42,971 |
| Famous Empires in History | 0 | - | 4.81 | 112,935 |
| Same Start and End Letter - History #1 | 0 | - | 4.15 | 24,079 |
| Same Start and End Letter - History #2 | 0 | - | 4.09 | 24,562 |
| A to Z: Musical Terms #2 | 0 | - | 4.11 | 10,286 |
| Geography A-Z #4 | 0 | - | 4.36 | 24,829 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 111,680 |
| People Depicted in Paintings | 0 | - | 4.55 | 42,811 |
| Brand Logos That Start with A | 0 | - | 4.54 | 63,023 |
| Brand Logos That Start With B | 0 | - | 4.45 | 54,109 |
| Brand Logos That Start With M | 0 | - | 4.42 | 55,499 |
| NATO Military Alphabet | 0 | - | 4.98 | 524,990 |
| Geography by Letter - A | 0 | - | 4.70 | 202,077 |
| Geography by Letter - B | 0 | - | 4.55 | 175,487 |
| Geography by Letter - H | 0 | - | 4.75 | 142,803 |
| Geography by Letter - C | 0 | - | 4.50 | 151,009 |
| Geography by Letter - D | 0 | - | 4.48 | 143,396 |
| Geography by Letter - E | 0 | - | 4.41 | 140,483 |
| Geography by Letter - I | 0 | - | 4.44 | 116,428 |
| Geography by Letter - K | 0 | - | 4.54 | 112,343 |
| Geography by Letter - L | 0 | - | 4.45 | 141,724 |
| Geography by Letter - M | 0 | - | 4.48 | 112,339 |
| Geography by Letter - N | 0 | - | 4.51 | 121,270 |
| Geography by Letter - P | 0 | - | 4.47 | 169,382 |
| Geography by Letter - R | 0 | - | 4.42 | 122,740 |
| Geography by Letter - S #1 | 0 | - | 4.75 | 132,495 |
| Geography by Letter - U | 0 | - | 4.52 | 135,132 |
| Geography by Letter - W | 0 | - | 4.41 | 109,844 |
| Asian Geography By Letter - K | 0 | - | 4.77 | 56,806 |
| Movies that Start with G | 0 | - | 4.49 | 66,447 |
| Movies that Start with I | 0 | - | 4.41 | 63,218 |
| WWII A-Z #1 | 0 | - | 4.79 | 97,967 |
| WWII A-Z #2 | 0 | - | 4.43 | 52,094 |
| Famous Battles Quiz | 0 | - | 4.26 | 47,538 |
| Name the War Quiz | 0 | - | 4.38 | 195,498 |
| Famous U.S. Generals | 0 | - | 4.26 | 37,596 |
| Religions by Country of Origin Quiz | 0 | - | 4.30 | 74,483 |
| Famous Families #1 | 0 | - | 4.27 | 81,591 |
| American Football A-Z | 0 | - | 4.21 | 14,108 |
| MLB Baseball A-Z #2 | 0 | - | 4.11 | 16,562 |
| Canada A-Z | 0 | - | 4.69 | 31,565 |
| Former Countries by Territory Map | 0 | - | 4.96 | 92,984 |
| Empires by Maps | 0 | - | 4.99 | 105,668 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 99,691 |
| Art Works Picture Quiz #2 | 0 | - | 4.48 | 88,879 |
| Art Works Picture Quiz #3 | 0 | - | 4.41 | 42,860 |
| Ultimate 20th Century History Quiz | 0 | - | 4.83 | 49,655 |
| The 7 Wonders of the Ancient World | 0 | - | 4.81 | 67,068 |
| 17th Century A-Z | 0 | - | 4.62 | 25,582 |
| Countries by Military Spending | 0 | - | 4.93 | 167,335 |
| 100 Most Common English Words | 0 | - | 4.89 | 1,236,827 |
| Classic Novels by Plot #2 | 0 | - | 4.83 | 33,819 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.91 | 104,127 |
| Animals that Start with L | 0 | - | 4.45 | 97,370 |
| Animals that Start with P | 0 | - | 4.45 | 82,696 |
| Animals that Start with S | 0 | - | 4.49 | 83,669 |
| Geography by Letter on the World Map - B | 0 | - | 4.50 | 84,400 |
| Geography by Letter on the World Map - A | 0 | - | 4.78 | 100,073 |
| Metals of Antiquity | 0 | - | 4.94 | 89,149 |
| Space Exploration Trivia | 0 | - | 4.37 | 34,212 |
| Oldest Things | 0 | - | 3.96 | 65,127 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,465 |
| Famous Firsts #2 | 0 | - | 4.00 | 79,596 |
| Famous Firsts #3 - The United States | 0 | - | 4.17 | 13,721 |
| Years in History #1 - Multiple Choice | 0 | - | 4.82 | 66,461 |
| Brand Logos That Start With D | 0 | - | 4.33 | 55,396 |
| Brand Logos That Start With C | 0 | - | 4.13 | 45,030 |
| Brand Logos That Start With L | 0 | - | 4.40 | 53,962 |
| Brand Logos That Start With S | 0 | - | 4.39 | 51,169 |
| Most Common English Verbs - Extreme | 0 | - | 4.95 | 146,725 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.41 | 14,453 |
| Top Five Exporting Partners by Country | 0 | - | 4.84 | 64,475 |
| Geography by Letter - G | 0 | - | 4.35 | 120,233 |
| Geography by Letter - F | 0 | - | 4.28 | 131,277 |
| Geography by Letter - J | 0 | - | 4.37 | 117,149 |
| Geography by Letter - O | 0 | - | 4.38 | 123,926 |
| Geography by Letter - V | 0 | - | 4.38 | 114,272 |
| Geography by Letter - Y | 0 | - | 4.37 | 105,975 |
| Geography by Letter - Z | 0 | - | 4.09 | 77,107 |
| Geography by Letter - Q | 0 | - | 4.38 | 65,105 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.17 | 34,245 |
| Middle East A-Z | 0 | - | 4.46 | 44,363 |
| South America A-Z | 0 | - | 4.13 | 10,429 |
| Movies that Start with A | 0 | - | 4.11 | 60,024 |
| Movies that Start with C | 0 | - | 4.29 | 59,712 |
| Movies that Start with B | 0 | - | 4.36 | 82,763 |
| Movies that Start with D | 0 | - | 4.35 | 66,848 |
| Movies that Start with E | 0 | - | 4.15 | 66,754 |
| Movies that Start with J | 0 | - | 4.22 | 74,228 |
| Movies that Start with L | 0 | - | 4.18 | 58,969 |
| Movies that Start with M | 0 | - | 4.28 | 47,042 |
| Movies that Start with N | 0 | - | 4.03 | 40,195 |
| Movies that Start with P | 0 | - | 4.25 | 52,958 |
| Movies that Start with R | 0 | - | 4.16 | 45,123 |
| Movies that Start with W | 0 | - | 4.06 | 43,294 |
| Movies that Start with T | 0 | - | 4.34 | 47,918 |
| Movies that Start with S | 0 | - | 4.36 | 55,047 |
| Movies that Start with F | 0 | - | 4.15 | 67,239 |
| Music by Letter - F | 0 | - | 4.47 | 25,770 |
| Music by Letter - P | 0 | - | 4.43 | 18,672 |
| Music by Letter - A | 0 | - | 4.61 | 29,990 |
| Google What's the Difference? - History | 0 | - | 4.21 | 44,781 |
| Cradles of Civilization | 0 | - | 4.43 | 35,554 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 684,114 |
| Notable People of WWII | 0 | - | 4.53 | 83,077 |
| WWII Trivia #2 | 0 | - | 4.51 | 99,135 |
| World War I Quiz | 0 | - | 4.78 | 96,168 |
| WWI A-Z | 0 | - | 4.49 | 36,723 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 140,006 |
| Famous Explorers | 0 | - | 4.64 | 34,314 |
| Answers by Time Period | 0 | - | 4.56 | 53,350 |
| Star Wars A-Z | 0 | - | 4.45 | 83,371 |
| Musical Acts by Letter - J | 0 | - | 4.22 | 75,272 |
| Musical Acts by Letter - M | 0 | - | 4.14 | 89,633 |
| Musical Acts by Letter - N | 0 | - | 4.17 | 66,445 |
| Musical Acts by Letter - P | 0 | - | 4.22 | 63,428 |
| Musical Acts by Letter - R | 0 | - | 4.32 | 80,811 |
| Musical Acts by Letter - T | 0 | - | 4.11 | 64,860 |
| Musical Acts by Letter - A | 0 | - | 4.27 | 79,329 |
| Musical Acts by Letter - B | 0 | - | 4.33 | 70,204 |
| Musical Acts by Letter - C | 0 | - | 4.36 | 57,785 |
| Musical Acts by Letter - D | 0 | - | 4.11 | 50,957 |
