| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,275 |
| WWII Geography | 0 | - | 4.81 | 119,859 |
| WWII Figures by Picture | 0 | - | 4.89 | 63,739 |
| NATO Countries | 0 | - | 4.98 | 278,001 |
| EU Countries Quiz | 0 | - | 4.99 | 271,554 |
| 7 Deadly Sins | 0 | - | 4.88 | 397,612 |
| Famous Dictators #1 | 0 | - | 4.69 | 199,180 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,292 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,126 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,309 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,656 |
| Words for Leaders | 0 | - | 4.77 | 255,976 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,793 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,587 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,093,717 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,583 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,199 |
| Political Quotes | 0 | - | 4.17 | 19,844 |
| Military History Vocabulary | 0 | - | 4.91 | 66,850 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,808 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,329 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,663 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 335,419 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,600 |
| The Sun Quiz | 0 | - | 4.93 | 34,331 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,164 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,047 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,634 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,768 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,157 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,315 |
| Popular Royal Names | 0 | - | 4.27 | 124,706 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,747 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.20 | 48,294 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,252 |
| First Names of Painters | 0 | - | 4.43 | 59,728 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,743 |
| UN Secretaries-General | 0 | - | 4.40 | 7,778 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,575 |
| Name the English Monarchs | 0 | - | 4.92 | 500,023 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,678 |
| Small Countries with Large Economies | 0 | - | 4.63 | 89,613 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,082 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,727 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 79,929 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,055 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,278 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,651 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,023 |
| Nicknames in World History | 0 | - | 4.74 | 37,586 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,374 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,549 |
| WWII Decoder | 0 | - | 4.41 | 53,340 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 55,118 |
| Quotes from Historical Figures #1 | 0 | - | 4.50 | 87,302 |
| All OPEC Countries Ever | 0 | - | 4.77 | 86,818 |
| Literary Quotes #1 | 0 | - | 4.49 | 33,488 |
| Star Wars Quotes | 0 | - | 4.83 | 174,159 |
| Random Countries Hidden in the World Map | 0 | - | 4.81 | 112,260 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,445 |
| Name a Country A-Z | 0 | - | 5.00 | 241,696 |
| Name a Disney/Pixar Movie A-Z | 0 | - | 4.84 | 51,170 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 120,789 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,120 |
| Empires by Maps | 0 | - | 4.98 | 119,283 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,446 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,241 |
| WWII First Names | 0 | - | 4.44 | 41,674 |
| WWII for Dummies | 0 | - | 4.80 | 104,354 |
| Countries in World War I | 0 | - | 4.88 | 227,392 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,772 |
| Historical Middle Names | 0 | - | 4.16 | 35,577 |
| First Names of Historical Figures #2 | 0 | - | 4.32 | 40,391 |
| First Names of Historical Figures #1 | 0 | - | 4.39 | 228,952 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,226 |
| Famous Lines of Poetry #1 | 0 | - | 4.55 | 34,208 |
| First Names of Explorers Quiz | 0 | - | 4.43 | 18,323 |
| Mythical Lands | 0 | - | 4.26 | 85,249 |
| Saint in the Answers | 0 | - | 4.10 | 44,217 |
| First Name + Initial Quiz | 0 | - | 4.03 | 52,798 |
| Nicknames in U.S. History | 0 | - | 4.25 | 31,654 |
| Historical Figures Known by a Single Name #1 | 0 | - | 4.31 | 84,803 |
| Quotes from Historical Figures #2 | 0 | - | 4.36 | 42,615 |
| Ben Franklin Quotes | 0 | - | 4.45 | 25,764 |
| Famous Speeches from History | 0 | - | 4.16 | 33,582 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,845 |
| Books with Names in the Title #2 | 0 | - | 4.42 | 54,543 |
| Name the 7 Dwarfs | 0 | - | 4.55 | 362,619 |
| Companies by Country | 0 | - | 4.61 | 119,002 |
| Groups of Things - The Bible | 0 | - | 4.43 | 55,099 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,008 |
| Astronomy Decoder | 0 | - | 4.50 | 37,925 |
| Word Chain - The Bible | 0 | - | 4.48 | 50,097 |
| U.S. Chain Restaurant Menu | 0 | - | 4.08 | 139,067 |
| Most Popular Fast Food Restaurants | 0 | - | 4.23 | 666,889 |
| World Countries by 10 Category Elimination #2 | 0 | - | 4.48 | 70,710 |
| Category Elimination - Countries #5 | 0 | - | 4.69 | 143,732 |
| Category Elimination - Elements | 0 | - | 4.61 | 53,427 |
| Metals of Antiquity | 0 | - | 4.94 | 93,117 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,415 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,772 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,664 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 705,721 |
| Countries in World War II | 0 | - | 4.54 | 908,261 |
| WWII Movies by Plot | 0 | - | 4.21 | 27,026 |
| Communist Countries in History | 0 | - | 4.63 | 493,856 |
| Historical Middle Names - U.S. | 0 | - | 3.83 | 60,940 |
| Famous Mottos | 0 | - | 3.46 | 48,560 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,024 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,603,527 |
| Books with Animals in the Title #1 | 0 | - | 4.41 | 74,445 |
| Famous Lines of Poetry #2 | 0 | - | 4.55 | 18,463 |
| Character to Author #1 | 0 | - | 4.52 | 43,351 |
| Batfacts: The Batman Quiz | 0 | - | 4.49 | 60,559 |
| U.S. Synonymous Trademarks | 0 | - | 4.06 | 66,778 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,755 |
| Influential Women in History | 0 | - | 4.42 | 35,295 |
| Cradles of Civilization | 0 | - | 4.46 | 39,368 |
| History of The Netherlands | 0 | - | 4.46 | 17,356 |
| Materials From History #1 | 0 | - | 4.56 | 51,329 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,378 |
| World Leaders by Picture | 0 | - | 4.36 | 264,262 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,268 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,787 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,518 |
| Famous Explorers | 0 | - | 4.58 | 36,049 |
| Famous Empires by Description | 0 | - | 4.73 | 118,157 |
| Answers by Time Period | 0 | - | 4.64 | 55,416 |
| Historical Misquotes | 0 | - | 4.39 | 26,643 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,843 |
| Books with Names in the Title #1 | 0 | - | 4.26 | 70,361 |
| First Names of Authors #1 | 0 | - | 4.20 | 59,088 |
| First Names of Authors #2 | 0 | - | 4.24 | 36,682 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,094,136 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,329 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,128 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,802 |
| Literary Quotes #2 | 0 | - | 4.18 | 24,333 |
| Sci-Fi Movie Quotes | 0 | - | 4.31 | 36,895 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 745,143 |
| Books by Country Quiz | 0 | - | 4.30 | 32,202 |
| Stores in the Mall #1 | 0 | - | 3.89 | 45,862 |
| Colors by Letter | 0 | - | 4.25 | 162,259 |
| Sibling Actors | 0 | - | 4.12 | 47,485 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,994 |
| Countries with Four Letters | 0 | - | 4.99 | 420,251 |
| Random Symbol to Element | 0 | - | 4.88 | 92,507 |
| Random Capital to Country | 0 | - | 4.99 | 2,584,014 |
| Random Country to Capital | 0 | - | 4.98 | 914,855 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,739 |
| Name a Valid World City | 0 | - | 4.83 | 70,581 |
| Category Elimination - Cities | 0 | - | 4.25 | 40,948 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,635 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,815 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,307 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,294 |
| Countries with NO Military | 0 | - | 4.97 | 61,579 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 147,388 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,159 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,964 |
| Books of the Protestant Bible | 0 | - | 4.89 | 208,627 |
| Majority Muslim Countries | 0 | - | 4.98 | 371,751 |
| Former Flags | 0 | - | 4.97 | 107,157 |
| Years in History by Picture | 0 | - | 4.44 | 35,305 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,076 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,414 |
| Materials From History #2 | 0 | - | 4.59 | 31,393 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,735 |
| Dictators by Picture | 0 | - | 4.18 | 48,998 |
| Former Capitals | 0 | - | 4.88 | 71,275 |
| Important Cities in WWII | 0 | - | 4.42 | 93,188 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,669 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,485 |
| Cold War Decoder | 0 | - | 4.83 | 52,111 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,355 |
| Events in History #2 | 0 | - | 4.49 | 71,553 |
| Events in History #4 | 0 | - | 4.44 | 44,196 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,747 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,897 |
| Assassinations in History | 0 | - | 4.21 | 66,084 |
| Famous Seconds | 0 | - | 4.22 | 46,491 |
| Ages and Eras | 0 | - | 4.38 | 67,580 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,444 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,705 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,104 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,899 |
| Female Historical Figures | 0 | - | 4.27 | 33,179 |
| Historical Blunders | 0 | - | 4.34 | 91,807 |
| Territorial Accessions | 0 | - | 4.39 | 34,705 |
| People Known as "The Great" | 0 | - | 4.46 | 24,590 |
| This Day in History - July | 0 | - | 4.49 | 36,413 |
| This Day in History - August | 0 | - | 4.42 | 43,305 |
| This Day in History - September | 0 | - | 4.55 | 57,344 |
| This Day in History - October | 0 | - | 4.49 | 37,582 |
| This Day in History - January | 0 | - | 4.50 | 46,634 |
| This Day in History - March | 0 | - | 4.45 | 43,585 |
| Ancient Civilizations | 0 | - | 4.64 | 37,838 |
| The Places They Went #1 | 0 | - | 4.74 | 33,475 |
| Famous Inventors | 0 | - | 4.43 | 43,494 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,666 |
