| History by Letter - B | 0 | - | 4.48 | 156,854 |
| History by Letter - C | 0 | - | 4.70 | 154,465 |
| History by Letter - E | 0 | - | 4.49 | 127,902 |
| History by Letter - G | 0 | - | 4.48 | 111,118 |
| History by Letter - H | 0 | - | 4.42 | 124,051 |
| History by Letter - J | 0 | - | 4.49 | 140,530 |
| History by Letter - N | 0 | - | 4.44 | 94,652 |
| History by Letter - S | 0 | - | 4.46 | 85,328 |
| History by Letter - W | 0 | - | 4.45 | 99,079 |
| History by Letter - M | 0 | - | 4.54 | 109,622 |
| History by Letter - K | 0 | - | 4.48 | 92,564 |
| History by Letter - L | 0 | - | 4.47 | 102,748 |
| History by Letter - I | 0 | - | 4.48 | 95,372 |
| 19th Century A-Z | 0 | - | 4.82 | 34,538 |
| History by Letter - D | 0 | - | 4.34 | 126,316 |
| History by Letter - F | 0 | - | 4.18 | 104,602 |
| History by Letter - O | 0 | - | 4.30 | 91,634 |
| History by Letter - P | 0 | - | 4.37 | 98,837 |
| History by Letter - Q | 0 | - | 4.35 | 74,298 |
| History by Letter - R | 0 | - | 4.22 | 112,986 |
| History by Letter - T | 0 | - | 4.40 | 96,921 |
| History by Letter - U | 0 | - | 4.19 | 92,806 |
| History by Letter - V | 0 | - | 4.27 | 74,891 |
| History by Letter - Y | 0 | - | 4.28 | 81,191 |
| History by Letter - Z | 0 | - | 4.20 | 71,953 |
| The 3rd and 4th Century | 0 | - | 4.53 | 20,132 |
| Empires A-Z | 0 | - | 4.49 | 40,092 |
| Same Start and End Letter - History #1 | 0 | - | 4.12 | 23,470 |
| Same Start and End Letter - History #2 | 0 | - | 4.08 | 23,404 |
| History Containing the Letter X | 0 | - | 4.28 | 13,853 |
| Countries that Start with a Vowel | 0 | - | 4.98 | 108,753 |
| Geography by Letter - T | 0 | - | 4.82 | 124,132 |
| People in History A-Z #1 | 0 | - | 4.65 | 91,211 |
| People in History A-Z #2 | 0 | - | 4.46 | 50,353 |
| People in History A-Z #3 | 0 | - | 4.47 | 42,436 |
| Geography by Letter on the World Map - A-Z | 0 | - | 4.87 | 69,819 |
| Geography by Letter on the World Map - A | 0 | - | 4.82 | 93,113 |
| Geography by Letter on the World Map - C | 0 | - | 4.84 | 103,780 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 140,312 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 182,348 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 162,371 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 177,437 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 287,810 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 168,245 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.81 | 66,107 |
| 20th Century A-Z | 0 | - | 4.48 | 38,876 |
| 18th Century A-Z | 0 | - | 4.60 | 31,694 |
| Famous Empires in History | 0 | - | 4.83 | 104,950 |
| Famous Firsts #1 | 0 | - | 4.42 | 65,926 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 66,692 |
| Invasions | 0 | - | 4.71 | 90,000 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 215,263 |
| Name an Official Language A-Z | 0 | - | 4.92 | 135,862 |
| People Depicted in Paintings | 0 | - | 4.56 | 41,382 |
| Normandy D-Day Beaches | 0 | - | 4.81 | 36,927 |
| Territory Changes in World War I | 0 | - | 4.87 | 40,677 |
| 16th Century A-Z | 0 | - | 4.54 | 15,923 |
| Brand Logos That Start with A | 0 | - | 4.52 | 57,196 |
| Brand Logos That Start With B | 0 | - | 4.47 | 49,181 |
| Brand Logos That Start With M | 0 | - | 4.42 | 49,737 |
| NATO Military Alphabet | 0 | - | 4.98 | 504,252 |
| Geography by Letter - A | 0 | - | 4.70 | 193,602 |
| Geography by Letter - B | 0 | - | 4.57 | 166,565 |
| Geography by Letter - H | 0 | - | 4.72 | 135,028 |
| Geography by Letter - C | 0 | - | 4.50 | 143,053 |
| Geography by Letter - D | 0 | - | 4.47 | 136,526 |
| Geography by Letter - I | 0 | - | 4.43 | 110,992 |
| Geography by Letter - K | 0 | - | 4.54 | 106,677 |
| Geography by Letter - L | 0 | - | 4.45 | 135,732 |
| Geography by Letter - M | 0 | - | 4.48 | 106,190 |
| Geography by Letter - N | 0 | - | 4.53 | 115,377 |
| Geography by Letter - P | 0 | - | 4.46 | 162,361 |
| Geography by Letter - S #1 | 0 | - | 4.79 | 116,305 |
| Geography by Letter - U | 0 | - | 4.54 | 118,620 |
| Geography by Letter - W | 0 | - | 4.42 | 96,685 |
| Asian Geography By Letter - K | 0 | - | 4.77 | 55,625 |
| A to Z: Musical Terms | 0 | - | 4.44 | 37,838 |
| Geography A-Z #2 | 0 | - | 4.46 | 49,535 |
| Geography A-Z #5 | 0 | - | 4.42 | 34,887 |
| Geography A-Z #1 | 0 | - | 4.55 | 66,067 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 109,687 |
| Movies that Start with G | 0 | - | 4.48 | 64,796 |
| Movies that Start with I | 0 | - | 4.41 | 61,733 |
| Former Countries by Territory Map | 0 | - | 4.97 | 86,688 |
| Empires by Maps | 0 | - | 4.98 | 95,934 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 46,811 |
| Famous Battles Quiz | 0 | - | 4.25 | 46,781 |
| Name the War Quiz | 0 | - | 4.39 | 190,864 |
| Famous U.S. Generals | 0 | - | 4.25 | 37,042 |
| Religions by Country of Origin Quiz | 0 | - | 4.29 | 72,897 |
| Famous Families #1 | 0 | - | 4.26 | 79,587 |
| Names for Warriors | 0 | - | 4.40 | 34,681 |
| Famous Firsts #2 | 0 | - | 4.01 | 78,688 |
| People in History A-Z #5 | 0 | - | 4.08 | 30,048 |
| People in History A-Z #4 | 0 | - | 4.13 | 21,401 |
| Countries by Military Spending | 0 | - | 4.93 | 160,835 |
| 12x12 Multiplication - The Whopper | 0 | - | 4.90 | 98,351 |
| Art Works Picture Quiz #1 | 0 | - | 4.50 | 97,110 |
| Art Works Picture Quiz #2 | 0 | - | 4.46 | 86,566 |
| WWII A-Z #1 | 0 | - | 4.79 | 94,250 |
| WWII A-Z #2 | 0 | - | 4.47 | 50,356 |
| People in History by Wikipedia Descriptions #1 | 0 | - | 4.46 | 32,416 |
| 100 Most Common English Words | 0 | - | 4.90 | 1,179,832 |
| Animals that Start with L | 0 | - | 4.44 | 94,809 |
| Animals that Start with P | 0 | - | 4.43 | 80,048 |
| Animals that Start with S | 0 | - | 4.49 | 80,928 |
| Geography by Letter on the World Map - B | 0 | - | 4.50 | 79,211 |
| World Cities A-Z #1 | 0 | - | 4.54 | 59,117 |
| Islands A-Z | 0 | - | 4.46 | 106,289 |
| World Cities A-Z #2 | 0 | - | 4.46 | 51,766 |
| Human Body A-Z | 0 | - | 4.49 | 109,033 |
| Africa A-Z | 0 | - | 4.54 | 43,882 |
| Diseases and Medical Conditions A-Z | 0 | - | 4.66 | 42,856 |
| Ethnic Groups A-Z | 0 | - | 4.58 | 38,446 |
| Space Exploration Trivia | 0 | - | 4.36 | 33,593 |
| 15th Century A-Z | 0 | - | 4.35 | 15,085 |
| 14th Century A-Z | 0 | - | 4.32 | 15,408 |
| 17th Century A-Z | 0 | - | 4.61 | 24,180 |
| Military History A-Z | 0 | - | 4.21 | 19,643 |
| Famous Generals - Non U.S. | 0 | - | 4.59 | 13,566 |
| Brand Logos That Start With D | 0 | - | 4.35 | 50,441 |
| Brand Logos That Start With C | 0 | - | 4.14 | 41,214 |
| Brand Logos That Start With L | 0 | - | 4.36 | 48,462 |
| Brand Logos That Start With S | 0 | - | 4.37 | 45,892 |
| Disney A-Z | 0 | - | 4.39 | 78,860 |
| Classic Novels by Plot #2 | 0 | - | 4.81 | 31,327 |
| Literature by Letter - Q, X, Y, and Z | 0 | - | 4.41 | 13,994 |
| Companies A-Z | 0 | - | 4.32 | 41,484 |
| Religion A-Z #1 | 0 | - | 4.31 | 58,845 |
| Religion A-Z #2 | 0 | - | 4.50 | 26,434 |
| Geography by Letter - E | 0 | - | 4.39 | 134,254 |
| Geography by Letter - G | 0 | - | 4.36 | 114,266 |
| Geography by Letter - F | 0 | - | 4.27 | 124,955 |
| Geography by Letter - J | 0 | - | 4.36 | 111,567 |
| Geography by Letter - O | 0 | - | 4.38 | 117,620 |
| Geography by Letter - R | 0 | - | 4.40 | 105,702 |
| Geography by Letter - V | 0 | - | 4.38 | 96,658 |
| Geography by Letter - Y | 0 | - | 4.37 | 92,058 |
| Geography by Letter - Z | 0 | - | 4.04 | 63,742 |
| Geography by Letter - Q | 0 | - | 4.33 | 52,654 |
| Same Start and End Letter - Geography #1 | 0 | - | 4.20 | 33,335 |
| Video Games A-Z | 0 | - | 4.04 | 35,502 |
| Geography A-Z #3 | 0 | - | 4.21 | 36,835 |
| Movies that Start with A | 0 | - | 4.11 | 58,579 |
| Movies that Start with C | 0 | - | 4.30 | 57,982 |
| Movies that Start with B | 0 | - | 4.36 | 80,736 |
| Movies that Start with D | 0 | - | 4.35 | 65,577 |
| Movies that Start with E | 0 | - | 4.16 | 65,462 |
| Movies that Start with J | 0 | - | 4.22 | 72,673 |
| Movies that Start with L | 0 | - | 4.17 | 57,832 |
| Movies that Start with M | 0 | - | 4.27 | 46,095 |
| Movies that Start with N | 0 | - | 4.06 | 39,307 |
| Movies that Start with P | 0 | - | 4.25 | 52,031 |
| Movies that Start with R | 0 | - | 4.13 | 43,891 |
| Movies that Start with W | 0 | - | 4.06 | 42,540 |
| Movies that Start with T | 0 | - | 4.37 | 46,905 |
| Movies that Start with S | 0 | - | 4.37 | 53,885 |
| Movies that Start with F | 0 | - | 4.15 | 65,973 |
| Music by Letter - F | 0 | - | 4.44 | 24,906 |
| Music by Letter - A | 0 | - | 4.60 | 28,926 |
| Metals of Antiquity | 0 | - | 4.93 | 85,821 |
| Cradles of Civilization | 0 | - | 4.41 | 32,719 |
| Materials From History #1 | 0 | - | 4.54 | 45,264 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 40,208 |
| Mythical Creatures Quiz #1 | 0 | - | 4.91 | 659,401 |
| WWI... or WWII? | 0 | - | 4.84 | 124,824 |
| Oldest Things | 0 | - | 3.96 | 64,680 |
| Famous Homes - Who Lived There? | 0 | - | 4.07 | 26,206 |
| Biggest Nations and Empires Ever | 0 | - | 4.55 | 134,529 |
| Famous Explorers | 0 | - | 4.65 | 32,845 |
| Answers by Time Period | 0 | - | 4.49 | 42,872 |
| Territorial Accessions | 0 | - | 4.43 | 32,345 |
| Famous Firsts #3 - The United States | 0 | - | 4.17 | 13,340 |
| Years in History #1 - Multiple Choice | 0 | - | 4.84 | 63,417 |
| Most Common English Verbs - Extreme | 0 | - | 4.95 | 138,266 |
| Top Five Exporting Partners by Country | 0 | - | 4.85 | 62,370 |
| The Americas Geography by Letter - B | 0 | - | 4.51 | 49,033 |
| The Americas Geography by Letter - S | 0 | - | 4.56 | 41,658 |
| Middle East A-Z | 0 | - | 4.45 | 43,243 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.43 | 41,537 |
| Google What's the Difference? - History | 0 | - | 4.21 | 43,685 |
| Art Works Picture Quiz #3 | 0 | - | 4.39 | 41,405 |
| Notable People of WWII | 0 | - | 4.52 | 80,533 |
| WWII Trivia #2 | 0 | - | 4.52 | 95,728 |
| World War I Quiz | 0 | - | 4.79 | 93,267 |
| WWI A-Z | 0 | - | 4.48 | 35,591 |
| Most Important People in History | 0 | - | 3.97 | 46,680 |
| People in History by Wikipedia Descriptions #3 | 0 | - | 4.53 | 27,452 |
| People in History by Wikipedia Descriptions #4 | 0 | - | 4.50 | 24,114 |
| Top Arms Exporting Countries | 0 | - | 4.95 | 77,063 |
| Star Wars A-Z | 0 | - | 4.44 | 80,182 |
| Monarchies of the World | 0 | - | 4.93 | 153,480 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 82,053 |
| Countries where the Sea Freezes | 0 | - | 4.91 | 81,791 |
| Largest Countries Without Deserts | 0 | - | 4.86 | 66,746 |
| Numbers Tile Select Quiz | 0 | - | 4.99 | 64,969 |
| Literature by Letter - A | 0 | - | 4.21 | 29,524 |
| Literature by Letter - D | 0 | - | 4.24 | 18,851 |
| Literature by Letter - C | 0 | - | 4.32 | 24,587 |
| Literature by Letter - F | 0 | - | 4.28 | 15,692 |
