| History by Letter - B | 0 | - | 4.45 | 171,349 |
| History by Letter - C | 0 | - | 4.70 | 170,419 |
| History by Letter - E | 0 | - | 4.51 | 139,921 |
| History by Letter - G | 0 | - | 4.45 | 121,515 |
| History by Letter - H | 0 | - | 4.45 | 135,944 |
| History by Letter - J | 0 | - | 4.51 | 153,315 |
| History by Letter - N | 0 | - | 4.44 | 103,442 |
| History by Letter - S | 0 | - | 4.47 | 93,723 |
| History by Letter - W | 0 | - | 4.45 | 108,800 |
| History by Letter - M | 0 | - | 4.54 | 119,154 |
| History by Letter - K | 0 | - | 4.50 | 100,872 |
| History by Letter - L | 0 | - | 4.49 | 111,559 |
| History by Letter - I | 0 | - | 4.46 | 103,736 |
| History by Letter - D | 0 | - | 4.39 | 136,944 |
| History by Letter - F | 0 | - | 4.18 | 113,739 |
| History by Letter - O | 0 | - | 4.31 | 99,097 |
| History by Letter - P | 0 | - | 4.38 | 107,394 |
| History by Letter - Q | 0 | - | 4.34 | 80,006 |
| History by Letter - R | 0 | - | 4.26 | 121,711 |
| History by Letter - T | 0 | - | 4.39 | 104,917 |
| History by Letter - U | 0 | - | 4.19 | 100,311 |
| History by Letter - V | 0 | - | 4.27 | 80,405 |
| History by Letter - Y | 0 | - | 4.27 | 86,961 |
| History by Letter - Z | 0 | - | 4.18 | 76,766 |
| The 3rd and 4th Century | 0 | - | 4.60 | 27,126 |
| History Containing the Letter X | 0 | - | 4.47 | 26,943 |
| History Containing the Letter Z | 0 | - | 4.53 | 23,354 |
| Empires A-Z | 0 | - | 4.51 | 44,857 |
| Same Start and End Letter - History #1 | 0 | - | 4.16 | 24,673 |
| Same Start and End Letter - History #2 | 0 | - | 4.13 | 25,551 |
| History Ending in Z | 0 | - | 4.35 | 13,460 |
| Countries that Start with a Vowel | 0 | - | 4.98 | 128,833 |
| Geography by Letter - T | 0 | - | 4.84 | 152,569 |
| People in History A-Z #1 | 0 | - | 4.63 | 98,654 |
| People in History A-Z #2 | 0 | - | 4.47 | 54,851 |
| People in History A-Z #3 | 0 | - | 4.44 | 45,982 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.89 | 81,340 |
| Geography by Letter on the World Map - A | 0 | - | 4.81 | 107,004 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,789 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,060 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,447 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 190,878 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,477 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 179,459 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.83 | 72,212 |
| 20th Century A-Z | 0 | - | 4.50 | 53,195 |
| 19th Century A-Z | 0 | - | 4.77 | 46,757 |
| 18th Century A-Z | 0 | - | 4.54 | 42,665 |
| "Second Best" History Edition | 0 | - | 4.93 | 61,989 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,601 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,961 |
| People in History A-Z #5 | 0 | - | 4.09 | 31,818 |
| Shortest Country Name A-Z | 0 | - | 5.00 | 235,044 |
| Name an Official Language A-Z | 0 | - | 4.91 | 174,890 |
| People Depicted in Paintings | 0 | - | 4.54 | 44,399 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,140 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,264 |
| 16th Century A-Z | 0 | - | 4.58 | 24,398 |
| 15th Century A-Z | 0 | - | 4.49 | 23,408 |
| 14th Century A-Z | 0 | - | 4.41 | 23,783 |
| 17th Century A-Z | 0 | - | 4.78 | 34,184 |
| NATO Military Alphabet | 0 | - | 4.98 | 554,804 |
| 12 x 12 Multiplication Table in 2 Minutes | 0 | - | 4.81 | 798,312 |
| Geography by Letter - A | 0 | - | 4.74 | 210,244 |
| Geography by Letter - B | 0 | - | 4.56 | 183,397 |
| Geography by Letter - H | 0 | - | 4.69 | 149,369 |
| Geography by Letter - C | 0 | - | 4.47 | 157,670 |
| Geography by Letter - D | 0 | - | 4.50 | 149,597 |
| Geography by Letter - E | 0 | - | 4.42 | 146,743 |
| Geography by Letter - I | 0 | - | 4.42 | 121,276 |
| Geography by Letter - K | 0 | - | 4.53 | 117,405 |
| Geography by Letter - L | 0 | - | 4.43 | 147,700 |
| Geography by Letter - M | 0 | - | 4.49 | 117,715 |
| Geography by Letter - N | 0 | - | 4.51 | 126,326 |
| Geography by Letter - P | 0 | - | 4.47 | 175,253 |
| Geography by Letter - R | 0 | - | 4.43 | 130,461 |
| Geography by Letter - S #1 | 0 | - | 4.74 | 139,698 |
| Geography by Letter - U | 0 | - | 4.54 | 142,179 |
| Asian Geography By Letter - K | 0 | - | 4.74 | 57,997 |
| Geography Containing the Letter X | 0 | - | 4.42 | 34,477 |
| Geography Containing the Letter Q | 0 | - | 4.55 | 32,812 |
| A to Z: Musical Terms | 0 | - | 4.43 | 41,103 |
| Geography A-Z #2 | 0 | - | 4.46 | 52,706 |
| Geography A-Z #5 | 0 | - | 4.47 | 37,200 |
| Geography A-Z #1 | 0 | - | 4.56 | 69,357 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 124,940 |
| Movies that Start with G | 0 | - | 4.48 | 68,272 |
| Movies that Start with I | 0 | - | 4.41 | 64,915 |
| Brand Logos That Start with A | 0 | - | 4.51 | 69,381 |
| Brand Logos That Start With B | 0 | - | 4.41 | 59,287 |
| Brand Logos That Start With M | 0 | - | 4.45 | 61,875 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,726 |
| Empires by Maps | 0 | - | 4.98 | 118,693 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,298 |
| Famous Battles Quiz | 0 | - | 4.21 | 48,827 |
| Name the War | 0 | - | 4.37 | 200,853 |
| Famous U.S. Generals | 0 | - | 4.27 | 38,416 |
| Famous Firsts #1 | 0 | - | 4.40 | 68,834 |
| Famous Families #1 | 0 | - | 4.20 | 83,420 |
| Names for Warriors | 0 | - | 4.40 | 36,801 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,129 |
| People in History A-Z #4 | 0 | - | 4.10 | 22,934 |
| Countries by Military Spending | 0 | - | 4.93 | 176,523 |
| Classic Novels by Plot #2 | 0 | - | 4.87 | 37,566 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.92 | 119,801 |
| Art Works Picture Quiz #1 | 0 | - | 4.51 | 118,535 |
| Art Works Picture Quiz #2 | 0 | - | 4.49 | 104,747 |
| Art Works Picture Quiz #3 | 0 | - | 4.45 | 48,554 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,445 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,358 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.42 | 44,223 |
| People in History by Wikipedia Descriptions #2 | 0 | - | 4.42 | 39,348 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.50 | 36,602 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,306,063 |
| Animals that Start with L | 0 | - | 4.47 | 101,372 |
| Animals that Start with P | 0 | - | 4.45 | 85,735 |
| Animals that Start with S | 0 | - | 4.49 | 86,926 |
| Geography by Letter on the World Map - B | 0 | - | 4.52 | 89,695 |
| Geography by Letter on the World Map - C | 0 | - | 4.78 | 116,680 |
| World Cities A-Z by Clue #1 | 0 | - | 4.51 | 66,406 |
| Islands A-Z | 0 | - | 4.46 | 116,845 |
| World Cities A-Z by Clue #2 | 0 | - | 4.41 | 57,842 |
| Human Body A-Z | 0 | - | 4.51 | 128,514 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 34,510 |
| Animals A-Z #1 | 0 | - | 4.41 | 92,859 |
| Africa A-Z | 0 | - | 4.57 | 46,395 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.60 | 49,043 |
| Ethnic Groups A-Z | 0 | - | 4.50 | 42,067 |
| Space Exploration Trivia | 0 | - | 4.38 | 35,198 |
| Military History A-Z | 0 | - | 4.20 | 21,050 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 15,019 |
| Disney A-Z | 0 | - | 4.37 | 86,605 |
| Literature by Letter - A | 0 | - | 4.23 | 31,772 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.42 | 15,074 |
| Companies A-Z | 0 | - | 4.30 | 42,620 |
| Religion A-Z #1 | 0 | - | 4.32 | 61,498 |
| Religion A-Z #2 | 0 | - | 4.41 | 36,836 |
| Geography by Letter - G | 0 | - | 4.35 | 125,548 |
| Geography by Letter - F | 0 | - | 4.27 | 137,135 |
| Geography by Letter - J | 0 | - | 4.34 | 122,222 |
| Geography by Letter - O | 0 | - | 4.37 | 129,069 |
| Geography by Letter - V | 0 | - | 4.39 | 120,967 |
| Geography by Letter - W | 0 | - | 4.39 | 114,261 |
| Geography by Letter - Y | 0 | - | 4.39 | 110,730 |
| Geography by Letter - Z | 0 | - | 4.11 | 81,090 |
| Geography by Letter - Q | 0 | - | 4.38 | 68,936 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.18 | 35,125 |
| Geography Containing the Letter Z | 0 | - | 4.48 | 27,679 |
| Video Games A-Z | 0 | - | 4.08 | 38,727 |
| Geography A-Z #3 | 0 | - | 4.22 | 39,089 |
| Movies that Start with A | 0 | - | 4.13 | 61,657 |
| Movies that Start with C | 0 | - | 4.30 | 61,605 |
| Movies that Start with B | 0 | - | 4.35 | 84,937 |
| Movies that Start with D | 0 | - | 4.34 | 68,239 |
| Movies that Start with E | 0 | - | 4.13 | 68,184 |
| Movies that Start with J | 0 | - | 4.18 | 75,938 |
| Movies that Start with L | 0 | - | 4.16 | 60,234 |
| Movies that Start with M | 0 | - | 4.28 | 48,078 |
| Movies that Start with N | 0 | - | 4.02 | 41,118 |
| Movies that Start with P | 0 | - | 4.25 | 54,013 |
| Movies that Start with R | 0 | - | 4.17 | 46,466 |
| Movies that Start with W | 0 | - | 4.07 | 44,142 |
| Movies that Start with T | 0 | - | 4.33 | 49,130 |
| Movies that Start with S | 0 | - | 4.35 | 56,280 |
| Movies that Start with F | 0 | - | 4.13 | 68,656 |
| Music by Letter - F | 0 | - | 4.48 | 26,847 |
| Music by Letter - A | 0 | - | 4.61 | 31,216 |
| Brand Logos That Start With D | 0 | - | 4.37 | 60,784 |
| Brand Logos That Start With C | 0 | - | 4.17 | 49,087 |
| Brand Logos That Start With L | 0 | - | 4.39 | 60,296 |
| Brand Logos That Start With S | 0 | - | 4.37 | 56,816 |
| Influential Women in History | 0 | - | 4.42 | 35,142 |
| Metals of Antiquity | 0 | - | 4.94 | 92,970 |
| Cradles of Civilization | 0 | - | 4.46 | 39,203 |
| Materials From History #1 | 0 | - | 4.56 | 50,989 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,229 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,275 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,680 |
| WWI... or WWII? | 0 | - | 4.85 | 140,800 |
| Oldest Things | 0 | - | 3.92 | 65,597 |
| Famous Homes - Who Lived There? | 0 | - | 4.09 | 26,773 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,299 |
| Famous Explorers | 0 | - | 4.58 | 35,992 |
| Famous Empires by Description | 0 | - | 4.73 | 117,992 |
| Answers by Time Period | 0 | - | 4.63 | 55,310 |
| Famous Firsts #2 | 0 | - | 4.00 | 80,855 |
| Famous Firsts #3 - The United States | 0 | - | 4.17 | 14,495 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,699 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,917 |
| Top Five Exporting Partners by Country | 0 | - | 4.87 | 66,876 |
| Middle East A-Z | 0 | - | 4.47 | 45,822 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.45 | 44,173 |
| Google What's the Difference? - History | 0 | - | 4.20 | 46,047 |
| Notable People of WWII | 0 | - | 4.53 | 85,344 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,468 |
| World War I Quiz | 0 | - | 4.78 | 100,321 |
| WWI A-Z | 0 | - | 4.50 | 38,048 |
| Most Important People in History | 0 | - | 3.98 | 50,429 |
| Top Arms Exporting Countries | 0 | - | 4.96 | 85,146 |
| Star Wars A-Z | 0 | - | 4.46 | 87,236 |
