| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,104 |
| NATO Countries | 0 | - | 4.98 | 275,454 |
| EU Countries Quiz | 0 | - | 4.99 | 269,699 |
| 7 Deadly Sins | 0 | - | 4.88 | 394,596 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,701 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,213 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,045 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,191 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,455 |
| Words for Leaders | 0 | - | 4.77 | 255,028 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,622 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,090,288 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,810 |
| Political Quotes | 0 | - | 4.17 | 19,800 |
| Military History Vocabulary | 0 | - | 4.91 | 66,614 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,262 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,076 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,454 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 332,371 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,988 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,260 |
| The Sun Quiz | 0 | - | 4.93 | 34,075 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 136,538 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,359 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,416 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 222,678 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,208 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,713 |
| Popular Royal Names | 0 | - | 4.27 | 124,452 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.18 | 47,269 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,070 |
| First Names of Painters | 0 | - | 4.43 | 59,586 |
| World Leaders Quiz #2 | 0 | - | 4.00 | 35,640 |
| UN Secretaries-General | 0 | - | 4.40 | 7,759 |
| Benevolent Dictators and Enlightened Despots | 0 | - | 4.01 | 19,538 |
| Name the English Monarchs | 0 | - | 4.92 | 497,665 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,505 |
| Small Countries with Large Economies | 0 | - | 4.63 | 89,320 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,450 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,383 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 79,477 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,053 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,646 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,039 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,507 |
| Nicknames in World History | 0 | - | 4.73 | 37,316 |
| "Second Best" History Edition | 0 | - | 4.94 | 61,694 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,406 |
| WWII Geography | 0 | - | 4.81 | 119,302 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,472 |
| Quotes from Historical Figures #1 | 0 | - | 4.50 | 87,099 |
| OPEC Countries | 0 | - | 4.74 | 84,801 |
| Literary Quotes #1 | 0 | - | 4.49 | 33,367 |
| Star Wars Quotes | 0 | - | 4.84 | 173,351 |
| Random Countries Hidden in the World Map | 0 | - | 4.81 | 111,588 |
| Name a World Capital A-Z | 0 | - | 5.00 | 174,897 |
| Name a Country A-Z | 0 | - | 5.00 | 240,217 |
| Name a Disney/Pixar Movie A-Z | 0 | - | 4.89 | 50,380 |
| Name a Valid Country A-Z | 0 | - | 4.97 | 119,995 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,440 |
| Empires by Maps | 0 | - | 4.98 | 118,309 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,113 |
| The Dictator Files: Adolf Hitler | 0 | - | 4.79 | 77,275 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,179 |
| WWII First Names | 0 | - | 4.44 | 41,546 |
| Historical Middle Names | 0 | - | 4.16 | 35,366 |
| First Names of Historical Figures #2 | 0 | - | 4.32 | 40,215 |
| First Names of Historical Figures #1 | 0 | - | 4.39 | 228,557 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,066 |
| Famous Lines of Poetry #1 | 0 | - | 4.55 | 34,136 |
| First Names of Explorers Quiz | 0 | - | 4.43 | 18,245 |
| World Leaders of the World Wars | 0 | - | 4.35 | 37,645 |
| Mythical Lands | 0 | - | 4.26 | 85,146 |
| Saint in the Answers | 0 | - | 4.10 | 44,149 |
| First Name + Initial Quiz | 0 | - | 4.03 | 52,719 |
| Historical Figures Known by a Single Name #1 | 0 | - | 4.31 | 84,470 |
| Quotes from Historical Figures #2 | 0 | - | 4.36 | 42,503 |
| Ben Franklin Quotes | 0 | - | 4.45 | 25,743 |
| Famous Speeches from History | 0 | - | 4.16 | 33,522 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,734 |
| Books with Names in the Title #2 | 0 | - | 4.42 | 54,445 |
| Name the 7 Dwarfs | 0 | - | 4.55 | 361,524 |
| Companies by Country | 0 | - | 4.56 | 118,655 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,976 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,601 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,928 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,964 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,314 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,313 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,143 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,794 |
| Groups of Things - The Bible | 0 | - | 4.43 | 54,774 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,850 |
| Astronomy Decoder | 0 | - | 4.50 | 37,828 |
| Word Chain - The Bible | 0 | - | 4.44 | 40,999 |
| U.S. Chain Restaurant Menu | 0 | - | 4.08 | 138,934 |
| Most Popular Fast Food Restaurants | 0 | - | 4.23 | 664,533 |
| World Countries by 10 Category Elimination #2 | 0 | - | 4.47 | 70,447 |
| Category Elimination - Countries #5 | 0 | - | 4.69 | 143,136 |
| Category Elimination - Elements | 0 | - | 4.62 | 53,200 |
| Metals of Antiquity | 0 | - | 4.94 | 92,856 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,119 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,125 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,385 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,162 |
| Historical Middle Names - U.S. | 0 | - | 3.83 | 60,778 |
| Famous Mottos | 0 | - | 3.46 | 48,491 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,633 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,585,813 |
| Books with Animals in the Title #1 | 0 | - | 4.41 | 74,257 |
| Famous Lines of Poetry #2 | 0 | - | 4.55 | 18,419 |
| Character to Author #1 | 0 | - | 4.52 | 43,197 |
| Batfacts: The Batman Quiz | 0 | - | 4.49 | 60,260 |
| U.S. Synonymous Trademarks | 0 | - | 4.06 | 66,743 |
| Influential Women in History | 0 | - | 4.42 | 34,920 |
| Cradles of Civilization | 0 | - | 4.46 | 38,983 |
| History of The Netherlands | 0 | - | 4.46 | 17,305 |
| Materials From History #1 | 0 | - | 4.56 | 50,543 |
| World Leaders by Picture | 0 | - | 4.36 | 263,284 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,009 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,659 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 93,512 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,105 |
| Famous Explorers | 0 | - | 4.58 | 35,925 |
| Famous Empires by Description | 0 | - | 4.70 | 117,497 |
| Answers by Time Period | 0 | - | 4.63 | 55,249 |
| Nicknames in U.S. History | 0 | - | 4.25 | 31,573 |
| Historical Misquotes | 0 | - | 4.39 | 26,619 |
| Books with Names in the Title #1 | 0 | - | 4.26 | 70,280 |
| First Names of Authors #1 | 0 | - | 4.20 | 59,000 |
| First Names of Authors #2 | 0 | - | 4.24 | 36,610 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,087,219 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,030 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 115,991 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,167 |
| Literary Quotes #2 | 0 | - | 4.18 | 24,269 |
| Sci-Fi Movie Quotes | 0 | - | 4.31 | 36,840 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 742,984 |
| Books by Country Quiz | 0 | - | 4.30 | 32,172 |
| Stores in the Mall #1 | 0 | - | 3.89 | 45,821 |
| Colors by Letter | 0 | - | 4.25 | 162,007 |
| Sibling Actors | 0 | - | 4.12 | 47,440 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,384 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,973 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,184 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,461 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,620 |
| Countries with Four Letters | 0 | - | 4.99 | 418,326 |
| Random Symbol to Element | 0 | - | 4.88 | 92,169 |
| Random Capital to Country | 0 | - | 4.99 | 2,577,202 |
| Random Country to Capital | 0 | - | 4.98 | 911,132 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,516 |
| Name a Valid World City | 0 | - | 4.83 | 70,067 |
| Category Elimination - Cities | 0 | - | 4.25 | 40,847 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 67,742 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,117 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,733 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,015 |
| Countries with NO Military | 0 | - | 4.97 | 61,130 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,676 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,876 |
| Top Five Countries by Religion | 0 | - | 4.93 | 168,940 |
| Books of the Protestant Bible | 0 | - | 4.89 | 207,039 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,267 |
| Former Flags | 0 | - | 4.97 | 106,604 |
| Years in History by Picture | 0 | - | 4.44 | 35,073 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,978 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,165 |
| Materials From History #2 | 0 | - | 4.59 | 30,898 |
| Dictators by Picture | 0 | - | 4.18 | 48,847 |
| WWII Decoder | 0 | - | 4.41 | 53,021 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,724 |
| WWII for Dummies | 0 | - | 4.80 | 103,773 |
| Cold War Decoder | 0 | - | 4.83 | 51,900 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,307 |
| Events in History #2 | 0 | - | 4.49 | 71,402 |
| Events in History #4 | 0 | - | 4.44 | 44,083 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,334 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,795 |
| Assassinations in History | 0 | - | 4.20 | 65,933 |
| Famous Seconds | 0 | - | 4.22 | 46,372 |
| Ages and Eras Quiz | 0 | - | 4.38 | 67,429 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,381 |
| Titled People Quiz #1 | 0 | - | 4.10 | 45,596 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,020 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,810 |
| Female Historical Figures | 0 | - | 4.31 | 33,084 |
| Historical Blunders | 0 | - | 4.33 | 91,652 |
| Territorial Accessions | 0 | - | 4.38 | 34,618 |
| People Known as "The Great" | 0 | - | 4.46 | 24,501 |
| This Day in History - July | 0 | - | 4.49 | 36,364 |
| This Day in History - August | 0 | - | 4.42 | 43,240 |
| This Day in History - September | 0 | - | 4.55 | 57,247 |
| This Day in History - October | 0 | - | 4.49 | 37,548 |
| This Day in History - January | 0 | - | 4.53 | 46,565 |
| This Day in History - March | 0 | - | 4.45 | 43,533 |
| Ancient Civilizations | 0 | - | 4.63 | 37,736 |
| The Places They Went #1 | 0 | - | 4.74 | 33,438 |
| Famous Inventors | 0 | - | 4.43 | 43,445 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,443 |
