| Books with Animals in the Title #1 | 0 | - | 4.41 | 74,453 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,184 |
| Books with Animals in the Title #2 | 0 | - | 4.23 | 18,011 |
| 7 Deadly Sins | 0 | - | 4.88 | 397,731 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,093,877 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,693 |
| WWII First Names | 0 | - | 4.44 | 41,678 |
| Books with Names in the Title #2 | 0 | - | 4.42 | 54,550 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 335,564 |
| Popular Royal Names | 0 | - | 4.27 | 124,727 |
| First Names of Painters | 0 | - | 4.43 | 59,734 |
| Military History Vocabulary | 0 | - | 4.91 | 66,869 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,351 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,679 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,612 |
| The Sun Quiz | 0 | - | 4.93 | 34,345 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,261 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,092 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,720 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,832 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,220 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,347 |
| Name the English Monarchs | 0 | - | 4.92 | 500,140 |
| Books by Country Quiz | 0 | - | 4.30 | 32,203 |
| Books with Names in the Title #1 | 0 | - | 4.26 | 70,365 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,136 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,811 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 79,948 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,096 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,331 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,785 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,058 |
| Nicknames in World History | 0 | - | 4.74 | 37,605 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,404 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,279 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,288 |
| WWII Geography | 0 | - | 4.81 | 119,882 |
| WWII Figures by Picture | 0 | - | 4.89 | 64,014 |
| Countries in World War I | 0 | - | 4.88 | 227,432 |
| Quotes from Historical Figures #1 | 0 | - | 4.50 | 87,316 |
| Literary Quotes #1 | 0 | - | 4.49 | 33,494 |
| Book Titles by Synonyms #2 | 0 | - | 4.37 | 39,349 |
| Star Wars Quotes | 0 | - | 4.83 | 175,264 |
| Random Countries Hidden in the World Map | 0 | - | 4.81 | 112,310 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,493 |
| Name a Country A-Z | 0 | - | 5.00 | 241,781 |
| Name a Disney/Pixar Movie A-Z | 0 | - | 4.84 | 51,199 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 120,836 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,204 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,606 |
| WWII for Dummies | 0 | - | 4.80 | 104,387 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 85,373 |
| Historical Middle Names | 0 | - | 4.16 | 35,599 |
| First Names of Historical Figures #2 | 0 | - | 4.32 | 40,408 |
| First Names of Historical Figures #1 | 0 | - | 4.39 | 228,983 |
| Political Quotes | 0 | - | 4.17 | 19,846 |
| Famous Lines of Poetry #1 | 0 | - | 4.55 | 34,213 |
| Books with Food in the Title | 0 | - | 3.93 | 39,634 |
| Title in the Lyrics - Disney Songs | 0 | - | 4.36 | 129,284 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,297 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,129 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,310 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,667 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,157 |
| Empires by Maps | 0 | - | 4.98 | 119,348 |
| First Names of Explorers Quiz | 0 | - | 4.43 | 18,330 |
| Words for Leaders | 0 | - | 4.77 | 256,065 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,810 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,753 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.20 | 48,336 |
| Mythical Lands | 0 | - | 4.26 | 85,252 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,462 |
| Communist Countries in History | 0 | - | 4.63 | 493,929 |
| Saint in the Answers | 0 | - | 4.10 | 44,219 |
| First Name + Initial Quiz | 0 | - | 4.03 | 52,805 |
| Nicknames in U.S. History | 0 | - | 4.25 | 31,665 |
| Historical Figures Known by a Single Name #1 | 0 | - | 4.31 | 84,825 |
| Quotes from Historical Figures #2 | 0 | - | 4.36 | 42,621 |
| Ben Franklin Quotes | 0 | - | 4.45 | 25,765 |
| Famous Speeches from History | 0 | - | 4.16 | 33,587 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,235 |
| Authors by Picture | 0 | - | 4.48 | 25,468 |
| Title in the Lyrics - Musicals | 0 | - | 4.28 | 54,629 |
| Name the 7 Dwarfs | 0 | - | 4.55 | 362,684 |
| Companies by Country | 0 | - | 4.61 | 119,015 |
| Groups of Things - The Bible | 0 | - | 4.43 | 55,109 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,015 |
| Astronomy Decoder | 0 | - | 4.50 | 37,934 |
| Word Chain - The Bible | 0 | - | 4.48 | 50,166 |
| U.S. Chain Restaurant Menu | 0 | - | 4.08 | 139,069 |
| Most Popular Fast Food Restaurants | 0 | - | 4.23 | 666,986 |
| World Countries by 10 Category Elimination #2 | 0 | - | 4.48 | 70,726 |
| Category Elimination - Countries #5 | 0 | - | 4.69 | 143,767 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,438 |
| Metals of Antiquity | 0 | - | 4.94 | 93,140 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,429 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,808 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,262 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 705,814 |
| Countries in World War II | 0 | - | 4.54 | 908,479 |
| Historical Middle Names - U.S. | 0 | - | 3.83 | 60,946 |
| Famous Mottos | 0 | - | 3.46 | 48,564 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,040 |
| Famous Lines of Poetry #2 | 0 | - | 4.55 | 18,466 |
| Character to Author #1 | 0 | - | 4.52 | 43,357 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,604,575 |
| Dumbed Down Disney Movie Titles | 0 | - | 4.17 | 29,335 |
| Batfacts: The Batman Quiz | 0 | - | 4.49 | 60,569 |
| U.S. Synonymous Trademarks | 0 | - | 4.06 | 66,779 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,763 |
| Influential Women in History | 0 | - | 4.42 | 35,304 |
| Cradles of Civilization | 0 | - | 4.46 | 39,378 |
| History of The Netherlands | 0 | - | 4.46 | 17,362 |
| Materials From History #1 | 0 | - | 4.56 | 51,338 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,386 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,748 |
| UN Secretaries-General | 0 | - | 4.40 | 7,778 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,578 |
| Important Cities in WWII | 0 | - | 4.42 | 93,204 |
| WWII Decoder | 0 | - | 4.41 | 53,353 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 55,132 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,792 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,536 |
| Famous Explorers | 0 | - | 4.58 | 36,052 |
| Famous Empires by Description | 0 | - | 4.73 | 118,167 |
| Answers by Time Period | 0 | - | 4.64 | 55,423 |
| Historical Misquotes | 0 | - | 4.39 | 26,644 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,854 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,117 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,688 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,470 |
| Literary Quotes #2 | 0 | - | 4.18 | 24,335 |
| Book Titles with Shared First Words | 0 | - | 4.53 | 15,116 |
| First Names of Authors #1 | 0 | - | 4.20 | 59,093 |
| First Names of Authors #2 | 0 | - | 4.24 | 36,687 |
| Character to Author #2 | 0 | - | 4.55 | 30,361 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 215,290 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,094,423 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,401 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,179 |
| Anagram Chain - Countries | 0 | - | 4.98 | 115,831 |
| Sci-Fi Movie Quotes | 0 | - | 4.31 | 36,900 |
| Movie Quotes A-Z #1 | 0 | - | 4.31 | 40,863 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 745,211 |
| Disney Feature Films by Characters | 0 | - | 4.42 | 276,909 |
| Stores in the Mall #1 | 0 | - | 3.89 | 45,862 |
| Colors by Letter | 0 | - | 4.25 | 162,267 |
| Superhero Decoder | 0 | - | 4.36 | 54,480 |
| Marvel Superheroes | 0 | - | 4.37 | 295,877 |
| Marvel Comics Movie Franchises | 0 | - | 4.29 | 115,551 |
| Car Model to Make | 0 | - | 4.18 | 195,928 |
| Famous Billionaires | 0 | - | 4.14 | 67,334 |
| Sibling Actors | 0 | - | 4.12 | 47,491 |
| Small Countries with Large Economies | 0 | - | 4.63 | 89,629 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,108 |
| Cities by Wikipedia Descriptions #1 | 0 | - | 4.52 | 55,329 |
| Cities by Wikipedia Descriptions #3 | 0 | - | 4.58 | 47,659 |
| Countries with Four Letters | 0 | - | 4.99 | 420,367 |
| Random Symbol to Element | 0 | - | 4.88 | 92,529 |
| Random Capital to Country | 0 | - | 4.99 | 2,584,356 |
| Random Country to Capital | 0 | - | 4.98 | 915,088 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,747 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,317 |
| Name a Valid World City | 0 | - | 4.83 | 70,619 |
| Category Elimination - Cities | 0 | - | 4.25 | 40,959 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,671 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,859 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,413 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,434 |
| Countries with NO Military | 0 | - | 4.97 | 61,617 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,450 |
| NATO Countries | 0 | - | 4.98 | 278,139 |
| EU Countries Quiz | 0 | - | 4.99 | 271,665 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,045 |
| Books of the Protestant Bible | 0 | - | 4.89 | 208,691 |
| Majority Muslim Countries | 0 | - | 4.98 | 371,908 |
| U.S. Celebrity Gossip by Year, 1991–2009 | 0 | - | 3.75 | 38,155 |
| Former Flags | 0 | - | 4.97 | 107,176 |
| Years in History by Picture | 0 | - | 4.44 | 35,313 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,082 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,429 |
| Materials From History #2 | 0 | - | 4.59 | 31,399 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,750 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,202 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,424 |
| Cold War Decoder | 0 | - | 4.83 | 52,119 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,357 |
| Events in History #2 | 0 | - | 4.49 | 71,562 |
| Events in History #4 | 0 | - | 4.44 | 44,201 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,787 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,902 |
| Assassinations in History | 0 | - | 4.21 | 66,087 |
| Famous Seconds | 0 | - | 4.22 | 46,495 |
| Ages and Eras | 0 | - | 4.38 | 67,582 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,448 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,707 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,104 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,906 |
| Female Historical Figures | 0 | - | 4.27 | 33,183 |
| Historical Blunders | 0 | - | 4.34 | 91,817 |
