| Books with Animals in the Title #1 | 0 | - | 4.42 | 64,666 |
| Countries by Number of Books Published | 0 | - | 4.95 | 64,775 |
| Books with Animals in the Title #2 | 0 | - | 4.21 | 16,155 |
| 7 Deadly Sins Quiz | 0 | - | 4.86 | 349,196 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,017,272 |
| WWII First Names | 0 | - | 4.46 | 39,038 |
| Books with Names in the Title Quiz #2 | 0 | - | 4.41 | 51,292 |
| Popular Royal Names | 0 | - | 4.27 | 117,893 |
| Military History Vocabulary | 0 | - | 4.92 | 61,039 |
| Divided World City Name Puzzle #1 | 0 | - | 4.91 | 41,015 |
| Top Five Countries by Random Categories | 0 | - | 4.96 | 111,874 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.96 | 108,203 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 288,451 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 211,173 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 201,699 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 171,780 |
| Category Elimination - European Geography #3 | 0 | - | 4.87 | 67,856 |
| First Names of Historical Figures #1 | 0 | - | 4.41 | 218,207 |
| English Monarchs Quiz | 0 | - | 4.91 | 454,759 |
| Books with Names in the Title Quiz #1 | 0 | - | 4.28 | 67,342 |
| Divided World City Name Puzzle #2 | 0 | - | 4.91 | 30,376 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 292,597 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.89 | 116,899 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 205,076 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.87 | 69,465 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 146,122 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.91 | 94,976 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 81,361 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 84,185 |
| "Second Best" History Edition | 0 | - | 4.94 | 48,310 |
| G7 Leaders Since 2003 | 0 | - | 4.46 | 39,045 |
| First Names of Painters | 0 | - | 4.38 | 56,770 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 211,269 |
| WWII Figures by Picture | 0 | - | 4.87 | 41,775 |
| Countries in World War I | 0 | - | 4.88 | 212,281 |
| Quotes from Historical Figures #1 | 0 | - | 4.48 | 82,987 |
| Famous Empires in History | 0 | - | 4.83 | 106,190 |
| Book Titles by Synonyms #2 | 0 | - | 4.35 | 36,688 |
| Star Wars Quotes | 0 | - | 4.84 | 160,149 |
| Random Countries Hidden in the World Map | 0 | - | 4.85 | 95,387 |
| Name a World Capital A-Z | 0 | - | 4.99 | 143,429 |
| Name a Country A-Z | 0 | - | 5.00 | 209,505 |
| Name a Disney/Pixar Movie A-Z | 0 | - | 4.90 | 35,239 |
| Name a Valid Country A-Z | 0 | - | 4.97 | 85,908 |
| Famous Dictators Quiz #1 | 0 | - | 4.69 | 185,351 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.76 | 59,189 |
| WWII for Dummies | 0 | - | 4.76 | 93,514 |
| First Names of Historical Figures #2 | 0 | - | 4.37 | 35,704 |
| Political Quotes Quiz | 0 | - | 4.09 | 19,077 |
| Famous Lines of Poetry #1 | 0 | - | 4.53 | 32,445 |
| Books by Country Quiz | 0 | - | 4.28 | 31,396 |
| Books with Food in the Title Quiz | 0 | - | 3.92 | 38,259 |
| Title in the Lyrics - Disney Songs | 0 | - | 4.35 | 119,965 |
| Historical Leaders by Date #1 | 0 | - | 4.46 | 28,546 |
| Historical Leaders by Date #2 | 0 | - | 4.54 | 27,472 |
| Historical Rulers #2 | 0 | - | 4.26 | 43,601 |
| Historical Rulers #1 | 0 | - | 4.32 | 112,218 |
| Former Countries by Territory Map | 0 | - | 4.96 | 87,497 |
| Empires by Maps | 0 | - | 4.98 | 97,303 |
| Words for Leaders | 0 | - | 4.80 | 220,429 |
| World Leaders Quiz #1 | 0 | - | 4.12 | 102,898 |
| World Leaders of the World Wars | 0 | - | 4.39 | 34,745 |
| UN Secretaries-General | 0 | - | 4.42 | 7,198 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.20 | 41,089 |
| Mythical Lands | 0 | - | 4.24 | 82,083 |
| Ultimate 20th Century History Quiz | 0 | - | 4.87 | 47,143 |
| Communist Countries in History | 0 | - | 4.65 | 461,433 |
| Answers Contain "Saint" | 0 | - | 4.08 | 40,527 |
| First Name + Initial Quiz | 0 | - | 4.05 | 50,349 |
| One-Name Historical Figures Quiz #1 | 0 | - | 4.28 | 66,214 |
| Quotes from Historical Figures #2 | 0 | - | 4.39 | 40,244 |
| Historical Misquotes | 0 | - | 4.41 | 26,003 |
| Famous Speeches from History | 0 | - | 4.15 | 32,509 |
| Literary Quotes #1 | 0 | - | 4.46 | 24,984 |
| Authors by Picture | 0 | - | 4.47 | 23,927 |
| Title in the Lyrics - Musicals | 0 | - | 4.28 | 51,350 |
| Name the 7 Dwarfs | 0 | - | 4.57 | 347,661 |
| Companies by Country | 0 | - | 4.50 | 110,042 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 23,494 |
| Astronomy Decoder | 0 | - | 4.52 | 35,594 |
| Word Chain - The Bible | 0 | - | 4.43 | 37,666 |
| U.S. Chain Restaurant Menu | 0 | - | 4.05 | 135,160 |
| Most Popular Fast Food Restaurants | 0 | - | 4.22 | 606,017 |
| World Countries by 10 Category Elimination #2 | 0 | - | 4.58 | 64,879 |
| Category Elimination - Countries #5 | 0 | - | 4.71 | 130,318 |
| Category Elimination - Elements | 0 | - | 4.66 | 48,589 |
| Metals of Antiquity | 0 | - | 4.94 | 86,371 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 40,596 |
| History: What Came First? #1 | 0 | - | 4.84 | 92,781 |
| Famous Dictators Quiz #2 | 0 | - | 4.34 | 80,508 |
| Mythical Creatures Quiz #1 | 0 | - | 4.91 | 662,868 |
| Countries in World War II | 0 | - | 4.58 | 826,341 |
| Historical Middle Names #1 | 0 | - | 3.62 | 48,507 |
| Historical Middle Names #2 | 0 | - | 4.18 | 19,926 |
| Famous Mottos Quiz | 0 | - | 3.48 | 47,706 |
| Years in History #1 - Multiple Choice | 0 | - | 4.84 | 63,944 |
| Famous Lines of Poetry #2 | 0 | - | 4.57 | 17,475 |
| Character to Author #1 | 0 | - | 4.52 | 40,777 |
| Batfacts: The Batman Quiz | 0 | - | 4.48 | 53,847 |
| U.S. Synonymous Trademarks | 0 | - | 4.09 | 65,615 |
| Celebrity Scandals Quiz #1 | 0 | - | 4.02 | 52,412 |
| Cradles of Civilization | 0 | - | 4.42 | 33,107 |
| History of The Netherlands | 0 | - | 4.43 | 15,966 |
| First Names of Explorers Quiz | 0 | - | 4.40 | 16,414 |
| Materials From History #1 | 0 | - | 4.54 | 45,557 |
| World Leaders Quiz #2 | 0 | - | 4.01 | 25,253 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 18,496 |
| Important Cities in WWII | 0 | - | 4.46 | 84,866 |
| WWII Geography | 0 | - | 4.79 | 100,854 |
| WWII Decoder | 0 | - | 4.44 | 49,430 |
| Name a Valid Answer - World War II | 0 | - | 4.51 | 48,952 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 88,432 |
| Biggest Nations and Empires Ever | 0 | - | 4.55 | 135,357 |
| Famous Explorers | 0 | - | 4.65 | 33,011 |
| Answers by Time Period | 0 | - | 4.50 | 43,091 |
| Nicknames in U.S. History | 0 | - | 4.22 | 30,294 |
| Territorial Accessions | 0 | - | 4.43 | 32,502 |
| Ben Franklin Quotes Quiz | 0 | - | 4.38 | 21,270 |
| The Life of King David | 0 | - | 4.43 | 13,504 |
| Houses of British Monarchs | 0 | - | 4.49 | 52,908 |
| Literary Quotes #2 | 0 | - | 4.15 | 21,879 |
| First Names of Authors #1 | 0 | - | 4.20 | 56,943 |
| First Names of Authors #2 | 0 | - | 4.21 | 34,989 |
| Character to Author #2 | 0 | - | 4.55 | 28,831 |
| Stephen King Stories | 0 | - | 4.65 | 27,932 |
| Songs with Body Parts in the Title | 0 | - | 4.30 | 204,261 |
| Word Scramble - Countries | 0 | - | 4.87 | 1,949,416 |
| Solve the Secret Country #1 | 0 | - | 4.95 | 135,136 |
| Solve the Secret Country #2 | 0 | - | 4.90 | 92,475 |
| Anagram Chain - Countries | 0 | - | 4.99 | 99,603 |
| Sci-Fi Movie Quotes Quiz | 0 | - | 4.32 | 35,519 |
| A to Z: Movie Quotes | 0 | - | 4.29 | 31,945 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 707,261 |
| Disney Feature Films by Characters | 0 | - | 4.42 | 268,673 |
| Stores in the Mall #1 | 0 | - | 3.85 | 44,825 |
| Colors by Letter | 0 | - | 4.24 | 155,459 |
| Superhero Decoder | 0 | - | 4.37 | 50,625 |
| Marvel Superheroes | 0 | - | 4.34 | 273,941 |
| Marvel Comics Movie Franchises | 0 | - | 4.19 | 91,180 |
| Car Brands Quiz #1 | 0 | - | 4.13 | 171,023 |
| Famous Billionaires | 0 | - | 4.13 | 65,317 |
| Sibling Actors | 0 | - | 4.11 | 46,327 |
| Small Countries with Large Economies | 0 | - | 4.69 | 82,019 |
| Groups of Things - The Bible | 0 | - | 4.40 | 51,374 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 389,419 |
| Cities by Wikipedia Descriptions #1 | 0 | - | 4.48 | 44,098 |
| Cities by Wikipedia Descriptions #3 | 0 | - | 4.53 | 37,886 |
| Countries with Four Letters | 0 | - | 4.99 | 378,746 |
| Random Symbol to Element | 0 | - | 4.87 | 84,071 |
| Random Capital to Country | 0 | - | 4.99 | 2,397,180 |
| Random Country to Capital | 0 | - | 4.98 | 815,341 |
| Europe Geography Decoder | 0 | - | 4.88 | 64,340 |
| Name a Major European City A-Z | 0 | - | 4.34 | 43,812 |
| Category Elimination - Cities | 0 | - | 4.27 | 38,376 |
| Countries but all Vowels are Changed to O | 0 | - | 4.85 | 38,163 |
| Solve the Secret Country #3 | 0 | - | 4.97 | 47,467 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 229,339 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 234,881 |
| Countries with NO Military | 0 | - | 4.97 | 50,891 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 128,286 |
| All Disney Animated Movies | 0 | - | 4.84 | 404,633 |
| NATO Countries Quiz | 0 | - | 4.98 | 229,369 |
| EU Countries Quiz | 0 | - | 4.99 | 231,433 |
| Top Five Countries by Religion | 0 | - | 4.91 | 146,247 |
| Books of the Protestant Bible | 0 | - | 4.87 | 182,509 |
| Majority Muslim Countries | 0 | - | 4.97 | 317,603 |
| Influential Women in History | 0 | - | 4.47 | 30,690 |
| Former Flags | 0 | - | 4.97 | 82,901 |
| Ancient Greece A-Z | 0 | - | 4.63 | 21,103 |
| Historical Events - AD or BC? | 0 | - | 4.74 | 52,820 |
| Materials From History #2 | 0 | - | 4.58 | 25,066 |
| States of the German Confederation in 1848 | 0 | - | 4.85 | 27,155 |
| World Leaders of the Cold War | 0 | - | 4.34 | 22,705 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 156,759 |
| 20th Century Dates Quiz | 0 | - | 4.53 | 38,112 |
| Events in History #2 | 0 | - | 4.47 | 67,557 |
| Events in History #4 | 0 | - | 4.44 | 41,461 |
| Name a Valid Year in History | 0 | - | 4.92 | 55,017 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.18 | 46,844 |
| Assassinations in History Quiz | 0 | - | 4.17 | 63,402 |
| Famous Seconds Quiz | 0 | - | 4.21 | 44,740 |
| Ages and Eras Quiz | 0 | - | 4.35 | 64,844 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.22 | 38,424 |
| Titled People Quiz #1 | 0 | - | 4.14 | 44,024 |
| Titled People Quiz #3 | 0 | - | 4.33 | 41,480 |
| Job Titles Quiz #1 | 0 | - | 4.23 | 73,797 |
| Historical Blunders | 0 | - | 4.31 | 87,796 |
| This Day in History - April | 0 | - | 4.42 | 43,483 |
| This Day in History - July | 0 | - | 4.48 | 35,310 |
| This Day in History - August | 0 | - | 4.41 | 42,013 |
| This Day in History - September | 0 | - | 4.55 | 55,255 |
| This Day in History - October | 0 | - | 4.49 | 36,475 |
| This Day in History - January | 0 | - | 4.53 | 44,790 |
| This Day in History - February | 0 | - | 4.41 | 38,601 |
| This Day in History - March | 0 | - | 4.44 | 42,195 |
| The 7 Wonders of the Ancient World | 0 | - | 4.80 | 65,823 |
| Ancient Civilizations | 0 | - | 4.56 | 34,949 |
| 19th Century A-Z | 0 | - | 4.79 | 35,060 |
| Battle to Country | 0 | - | 4.92 | 36,781 |
| The Places They Went #1 | 0 | - | 4.76 | 32,555 |
