| Capitals A-Z | 0 | - | 4.84 | 41,714 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 213,299 |
| Richest Countries A-Z | 0 | - | 4.92 | 87,705 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 109,073 |
| Name a Country A-Z | 0 | - | 5.00 | 200,759 |
| Name a Valid Country A-Z | 0 | - | 4.96 | 82,677 |
| Countries that Start with a Vowel | 0 | - | 4.98 | 106,267 |
| WWII A-Z #1 | 0 | - | 4.80 | 93,086 |
| WWII A-Z #2 | 0 | - | 4.48 | 49,865 |
| 2019 Year in Review | 0 | - | 4.43 | 32,574 |
| Ancient Greece A-Z | 0 | - | 4.64 | 20,683 |
| Countries that Start with A | 0 | - | 4.98 | 1,939,326 |
| Countries that Start with B | 0 | - | 4.95 | 2,077,891 |
| Countries that Start with C | 0 | - | 4.96 | 1,643,204 |
| Countries that Start with D | 0 | - | 4.96 | 591,010 |
| Countries that Start with E | 0 | - | 4.95 | 1,229,460 |
| Countries that Start with G | 0 | - | 4.97 | 1,348,743 |
| Countries that Start with H | 0 | - | 4.95 | 504,010 |
| Countries that Start with I | 0 | - | 4.92 | 1,159,391 |
| Countries that Start with J | 0 | - | 4.98 | 507,269 |
| Countries that Start with K | 0 | - | 4.96 | 711,003 |
| Countries that Start with L | 0 | - | 4.98 | 969,348 |
| Countries that Start with N | 0 | - | 4.93 | 995,845 |
| Countries that Start with P | 0 | - | 4.95 | 1,098,603 |
| Countries that Start with S | 0 | - | 4.98 | 1,601,682 |
| Countries that Start with T | 0 | - | 4.88 | 908,166 |
| Countries that Start with U | 0 | - | 4.96 | 819,918 |
| Countries that Start with V | 0 | - | 4.98 | 549,064 |
| Countries that Start with F | 0 | - | 4.83 | 535,811 |
| Countries that Start with M | 0 | - | 4.97 | 1,251,612 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 139,899 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 180,829 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 161,357 |
| Biggest Countries by Area A-Z | 0 | - | 4.95 | 176,013 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 286,300 |
| Middle East A-Z | 0 | - | 4.45 | 43,005 |
| 1960s Decade Quiz #2 | 0 | - | 4.44 | 41,466 |
| 2012 Year in Review | 0 | - | 4.03 | 45,195 |
| 2011 Year in Review | 0 | - | 4.16 | 41,116 |
| 2013 Year in Review | 0 | - | 4.32 | 39,579 |
| Military History Vocabulary | 0 | - | 4.92 | 59,928 |
| Asian Geography By Letter - B | 0 | - | 4.82 | 60,971 |
| United Kingdom A-Z | 0 | - | 4.53 | 80,781 |
| A-Z Cities by Pictures | 0 | - | 4.53 | 39,265 |
| WWII Geography | 0 | - | 4.81 | 99,148 |
| Normandy D-Day Beaches | 0 | - | 4.82 | 36,520 |
| WWII Figures by Picture | 0 | - | 4.88 | 40,086 |
| Territory Changes in World War I | 0 | - | 4.87 | 40,087 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 66,054 |
| Invasions | 0 | - | 4.71 | 89,173 |
| The Bible A-Z | 0 | - | 4.35 | 43,192 |
| One Country By Letter By Continent | 0 | - | 5.00 | 71,408 |
| European Geography A-Z | 0 | - | 4.40 | 45,317 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 50,928 |
| G7 Leaders Since 2003 | 0 | - | 4.46 | 38,389 |
| 1950s Decade Quiz | 0 | - | 4.37 | 46,418 |
| 1960s Decade Quiz #1 | 0 | - | 4.38 | 47,198 |
| 2015 Year in Review | 0 | - | 4.04 | 25,010 |
| 2010 Year in Review | 0 | - | 4.00 | 48,450 |
| 2014 Year in Review | 0 | - | 4.40 | 30,607 |
| 2016 Year in Review | 0 | - | 3.90 | 32,270 |
| Quiz on the Year 1997 | 0 | - | 4.33 | 18,635 |
| Quiz on the Year 1998 | 0 | - | 4.29 | 15,038 |
| One Capital by Letter by Continent | 0 | - | 4.97 | 3,346 |
| Name a Major European City A-Z | 0 | - | 4.34 | 42,777 |
| Four Letter Geography A-Z #1 | 0 | - | 4.60 | 28,143 |
| Famous Dictators Quiz #1 | 0 | - | 4.75 | 183,006 |
| Art Works Picture Quiz #1 | 0 | - | 4.50 | 96,655 |
| Art Works Picture Quiz #2 | 0 | - | 4.46 | 86,204 |
| WWI... or WWII? | 0 | - | 4.84 | 122,749 |
| Famous Battles Quiz | 0 | - | 4.25 | 46,610 |
| Name the War Quiz | 0 | - | 4.39 | 189,719 |
| Famous U.S. Generals | 0 | - | 4.25 | 36,938 |
| Religions by Country of Origin Quiz | 0 | - | 4.29 | 72,532 |
| Famous Empires in History | 0 | - | 4.83 | 102,911 |
| Names for Warriors | 0 | - | 4.40 | 34,519 |
| The 17th Century | 0 | - | 4.44 | 43,103 |
| 1940s Decade Quiz | 0 | - | 4.48 | 48,746 |
| 2010s Decade Quiz | 0 | - | 4.58 | 81,784 |
| Military History A-Z | 0 | - | 4.19 | 19,481 |
| Countries that Start with R | 0 | - | 4.45 | 386,171 |
| World Cities A-Z #1 | 0 | - | 4.54 | 58,862 |
| Capitals A-Z #2 | 0 | - | 4.39 | 25,273 |
| World Cities A-Z #2 | 0 | - | 4.46 | 51,533 |
| Africa A-Z | 0 | - | 4.54 | 43,668 |
| African Geography A-Z | 0 | - | 4.32 | 20,482 |
| Countries with the Greatest Elevation A-Z | 0 | - | 4.72 | 53,726 |
| London A-Z | 0 | - | 4.19 | 38,451 |
| Historical Leaders by Date #1 | 0 | - | 4.50 | 28,209 |
| Historical Leaders by Date #2 | 0 | - | 4.54 | 27,109 |
| Historical Rulers #2 | 0 | - | 4.26 | 43,061 |
| Historical Rulers #1 | 0 | - | 4.32 | 111,218 |
| Former Countries by Territory Map | 0 | - | 4.97 | 85,435 |
| Empires by Maps | 0 | - | 4.98 | 93,843 |
| World Leaders Quiz #1 | 0 | - | 4.12 | 101,620 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 46,219 |
| Famous Generals - Non U.S. | 0 | - | 4.58 | 13,452 |
| 100 Most Common English Words | 0 | - | 4.90 | 1,166,605 |
| Asian Geography By Letter - A | 0 | - | 4.66 | 66,053 |
| European Geography By Letter - A | 0 | - | 4.51 | 124,253 |
| European Geography By Letter - B #1 | 0 | - | 4.72 | 103,433 |
| European Geography By Letter - C | 0 | - | 4.43 | 104,817 |
| European Geography By Letter - D | 0 | - | 4.52 | 99,414 |
| European Geography By Letter - L | 0 | - | 4.51 | 104,809 |
| European Geography By Letter - M | 0 | - | 4.55 | 114,308 |
| European Geography By Letter - P | 0 | - | 4.79 | 89,430 |
| European Geography By Letter - N | 0 | - | 4.43 | 93,332 |
| European Geography By Letter - V | 0 | - | 4.45 | 86,365 |
| Asian Geography by Letter - H | 0 | - | 4.47 | 60,758 |
| Asian Geography By Letter - M | 0 | - | 4.46 | 56,955 |
| Asian Geography by Letter - P | 0 | - | 4.42 | 45,220 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 45,244 |
| European Geography By Letter - S #1 | 0 | - | 4.57 | 93,814 |
| Asian Geography By Letter - L | 0 | - | 4.45 | 38,017 |
| European Geography By Letter - B #2 | 0 | - | 4.72 | 61,930 |
| The Americas Geography by Letter - B | 0 | - | 4.50 | 48,836 |
| The Americas Geography by Letter - S | 0 | - | 4.56 | 41,509 |
| France A-Z | 0 | - | 4.16 | 25,671 |
| Switzerland A-Z | 0 | - | 4.40 | 18,416 |
| World Cities Based on Location A-Z - #1 | 0 | - | 4.43 | 41,255 |
| Turkey A-Z | 0 | - | 4.17 | 10,377 |
| Google What's the Difference? - History | 0 | - | 4.21 | 43,383 |
| Metals of Antiquity | 0 | - | 4.94 | 85,231 |
| Popular Royal Names | 0 | - | 4.25 | 115,861 |
| Russian History A-Z | 0 | - | 4.34 | 17,345 |
| History of The Netherlands | 0 | - | 4.42 | 15,729 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 39,647 |
| Famous Dictators Quiz #2 | 0 | - | 4.34 | 79,714 |
| Mythical Creatures Quiz #1 | 0 | - | 4.91 | 654,572 |
| Art Works Picture Quiz #3 | 0 | - | 4.39 | 41,160 |
| Notable People of WWII | 0 | - | 4.52 | 79,926 |
| WWII Trivia #2 | 0 | - | 4.50 | 86,390 |
| World War I Quiz | 0 | - | 4.79 | 92,114 |
| WWI A-Z | 0 | - | 4.47 | 35,284 |
| American History A-Z | 0 | - | 4.32 | 16,347 |
| 2020 Year in Review | 0 | - | 4.48 | 26,135 |
| NBA Basketball by Year, 1970–1999 | 0 | - | 4.21 | 42,259 |
| NBA Basketball by Year, 2000–Present | 0 | - | 4.27 | 52,585 |
| 1970s Decade Quiz | 0 | - | 4.16 | 49,044 |
| 2000s Decade Quiz | 0 | - | 4.19 | 101,627 |
| 1980s Decade Quiz | 0 | - | 4.34 | 70,973 |
| 1910s Decade Quiz | 0 | - | 4.17 | 50,241 |
| 1930s Decade Quiz | 0 | - | 4.25 | 46,643 |
| 1920s Decade Quiz | 0 | - | 4.32 | 46,962 |
| 1900s Decade Quiz | 0 | - | 4.15 | 42,173 |
| 1860s Decade Quiz | 0 | - | 4.29 | 38,631 |
| 1880s Decade Quiz | 0 | - | 4.21 | 37,655 |
| 1890s Decade Quiz | 0 | - | 4.22 | 38,065 |
| 1990s Decade Quiz | 0 | - | 4.02 | 50,096 |
| 1870s Decade Quiz | 0 | - | 4.28 | 35,027 |
| 1840s Decade Quiz | 0 | - | 4.29 | 35,801 |
| 1850s Decade Quiz | 0 | - | 4.40 | 33,190 |
| 1790s Decade Quiz | 0 | - | 4.53 | 31,217 |
| 1800s Decade Quiz | 0 | - | 4.49 | 29,805 |
| 1810s Decade Quiz | 0 | - | 4.56 | 29,090 |
| 1820s Decade Quiz | 0 | - | 4.50 | 27,983 |
| Years in History #1 - Multiple Choice | 0 | - | 4.84 | 62,757 |
| Most Common English Verbs - Extreme | 0 | - | 4.95 | 136,140 |
| Best Selling Artists by Letter Quiz | 0 | - | 4.09 | 40,409 |
| Colors by Letter | 0 | - | 4.24 | 154,029 |
| Asian Geography By Letter - S | 0 | - | 4.19 | 43,270 |
| European Geography By Letter - E | 0 | - | 4.20 | 105,312 |
| European Geography By Letter - F | 0 | - | 4.15 | 85,176 |
| European Geography By Letter - H | 0 | - | 4.29 | 88,524 |
| European Geography By Letter - G | 0 | - | 4.24 | 94,987 |
| European Geography By Letter - I | 0 | - | 4.09 | 88,686 |
| European Geography By Letter - K | 0 | - | 4.16 | 64,405 |
| European Geography By Letter - O | 0 | - | 4.27 | 57,671 |
| European Geography By Letter - R | 0 | - | 4.39 | 87,447 |
| European Geography by Letter - W | 0 | - | 4.21 | 78,197 |
| Asian Geography by Letter - D | 0 | - | 4.25 | 47,973 |
| Asian Geography by Letter - G | 0 | - | 4.36 | 47,529 |
| Asian Geography by Letter - I | 0 | - | 4.35 | 63,054 |
| Asian Geography by Letter - C | 0 | - | 4.33 | 60,426 |
| Asian Geography by Letter - N | 0 | - | 4.29 | 43,622 |
| European Geography By Letter - T | 0 | - | 4.39 | 70,823 |
| European Geography By Letter - S #2 | 0 | - | 4.16 | 46,676 |
| Asian Geography By Letter - O | 0 | - | 4.78 | 15,635 |
| Asian Geography By Letter - R | 0 | - | 4.44 | 13,853 |
| The Americas Geography by Letter - C | 0 | - | 4.28 | 54,648 |
| The Americas Geography by Letter - A | 0 | - | 4.29 | 41,770 |
| The Americas Geography by Letter - T | 0 | - | 4.23 | 38,479 |
| The Americas Geography by Letter - P | 0 | - | 4.36 | 36,219 |
| The Americas Geography by Letter - M | 0 | - | 4.40 | 36,253 |
| Asian Cities A-Z | 0 | - | 4.51 | 30,155 |
| Birds A-Z | 0 | - | 4.30 | 34,456 |
| Texas A-Z | 0 | - | 4.16 | 15,439 |
| Hawaii A-Z | 0 | - | 4.35 | 12,699 |
| Ohio A-Z | 0 | - | 4.10 | 5,816 |
| Fictional Characters by Picture - F | 0 | - | 4.41 | 57,896 |
| Cradles of Civilization | 0 | - | 4.41 | 32,153 |
| Former Flags | 0 | - | 4.98 | 81,238 |
| Materials From History #1 | 0 | - | 4.54 | 44,729 |
| UN Secretaries-General | 0 | - | 4.39 | 7,119 |
| First Names of Painters | 0 | - | 4.37 | 56,261 |
| WWII Trivia #1 | 0 | - | 4.36 | 161,448 |
| WWII Decoder | 0 | - | 4.43 | 48,706 |
| World War II Multiple Choice | 0 | - | 4.37 | 94,688 |
| Name a Valid Answer - World War II | 0 | - | 4.51 | 47,505 |
| Name a Valid Year in History | 0 | - | 4.92 | 52,683 |
