| #1 Hits of the 2020s | 0 | - | 4.46 | 92,387 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,107 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,219 |
| #1 Hits of the 2010s | 0 | - | 4.41 | 294,219 |
| Nicknames in World History | 0 | - | 4.73 | 37,336 |
| "Second Best" History Edition | 0 | - | 4.94 | 61,792 |
| WWII Geography | 0 | - | 4.81 | 119,336 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,520 |
| Quotes from Historical Figures #1 | 0 | - | 4.50 | 87,111 |
| Musicians Who Died Young | 0 | - | 4.39 | 107,453 |
| Former Countries by Territory Map | 0 | - | 4.96 | 101,532 |
| Empires by Maps | 0 | - | 4.98 | 118,473 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,218 |
| WWI... or WWII? | 0 | - | 4.85 | 140,623 |
| Historical Middle Names | 0 | - | 4.16 | 35,381 |
| First Names of Historical Figures #2 | 0 | - | 4.32 | 40,234 |
| First Names of Historical Figures #1 | 0 | - | 4.39 | 228,594 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,088 |
| Songs by Picture Quiz #1 | 0 | - | 4.68 | 65,356 |
| Songs by Picture Quiz #2 | 0 | - | 4.41 | 58,404 |
| First Names of Explorers Quiz | 0 | - | 4.43 | 18,254 |
| Mythical Lands | 0 | - | 4.26 | 85,153 |
| Saint in the Answers | 0 | - | 4.10 | 44,161 |
| First Name + Initial Quiz | 0 | - | 4.03 | 52,729 |
| Historical Figures Known by a Single Name #1 | 0 | - | 4.31 | 84,498 |
| Quotes from Historical Figures #2 | 0 | - | 4.36 | 42,511 |
| Ben Franklin Quotes | 0 | - | 4.45 | 25,744 |
| Famous Speeches from History | 0 | - | 4.16 | 33,525 |
| Music by Year, 1990–2009 | 0 | - | 4.20 | 109,376 |
| Music by Year, 1970–1989 | 0 | - | 4.31 | 40,952 |
| Most Popular NBA Jerseys | 0 | - | 4.38 | 832,621 |
| Metals of Antiquity | 0 | - | 4.94 | 92,901 |
| Popular Royal Names | 0 | - | 4.27 | 124,474 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,161 |
| History: What Came First? #1 | 0 | - | 4.87 | 104,179 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 704,317 |
| First Names of Painters | 0 | - | 4.43 | 59,596 |
| Notable People of WWII | 0 | - | 4.53 | 85,316 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,420 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,495 |
| World War I Quiz | 0 | - | 4.78 | 100,249 |
| WWI A-Z | 0 | - | 4.50 | 38,023 |
| Historical Middle Names - U.S. | 0 | - | 3.83 | 60,797 |
| Famous Mottos | 0 | - | 3.46 | 48,495 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 69,651 |
| Pasta... or Composer? | 0 | - | 4.63 | 26,528 |
| Songs with Food in the Title | 0 | - | 4.26 | 42,405 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,587,591 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,441 |
| Influential Women in History | 0 | - | 4.42 | 34,987 |
| Cradles of Civilization | 0 | - | 4.46 | 39,051 |
| Materials From History #1 | 0 | - | 4.56 | 50,593 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,077 |
| Recently Independent Countries | 0 | - | 4.98 | 157,978 |
| Biggest Nations and Empires Ever | 0 | - | 4.46 | 145,172 |
| Famous Explorers | 0 | - | 4.58 | 35,944 |
| Famous Empires by Description | 0 | - | 4.70 | 117,541 |
| Answers by Time Period | 0 | - | 4.63 | 55,263 |
| Nicknames in U.S. History | 0 | - | 4.25 | 31,577 |
| Historical Misquotes | 0 | - | 4.39 | 26,623 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.95 | 40,688 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 54,856 |
| Countries by National Anthem | 0 | - | 4.92 | 71,022 |
| Best Selling Artists by Letter Quiz | 0 | - | 4.04 | 43,189 |
| Songs with Animals in the Title #1 | 0 | - | 4.36 | 129,013 |
| Songs with Body Parts in the Title | 0 | - | 4.31 | 214,554 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,087,863 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,143 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,095 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,215 |
| 7 Deadly Sins | 0 | - | 4.88 | 394,854 |
| Most Popular NFL Jerseys | 0 | - | 4.19 | 236,479 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,746 |
| Countries with Four Letters | 0 | - | 4.99 | 418,491 |
| Random Symbol to Element | 0 | - | 4.88 | 92,210 |
| Random Capital to Country | 0 | - | 4.99 | 2,577,861 |
| Random Country to Capital | 0 | - | 4.98 | 911,529 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,536 |
| Name a Valid World City | 0 | - | 4.83 | 70,125 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 67,826 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,179 |
| Former Flags | 0 | - | 4.97 | 106,672 |
| Years in History by Picture | 0 | - | 4.44 | 35,101 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,184 |
| Materials From History #2 | 0 | - | 4.59 | 30,911 |
| Former Capitals | 0 | - | 4.88 | 71,137 |
| WWII Trivia #1 | 0 | - | 4.36 | 176,615 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,381 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,323 |
| WWII First Names | 0 | - | 4.44 | 41,559 |
| WWII Decoder | 0 | - | 4.41 | 53,035 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,276 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,747 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 49,719 |
| Cold War Decoder | 0 | - | 4.83 | 51,920 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,271 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,318 |
| Events in History #2 | 0 | - | 4.49 | 71,424 |
| Events in History #4 | 0 | - | 4.44 | 44,095 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,383 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,815 |
| Assassinations in History | 0 | - | 4.20 | 65,949 |
| Famous Seconds | 0 | - | 4.22 | 46,390 |
| Ages and Eras | 0 | - | 4.38 | 67,453 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,396 |
| Titled People Quiz #1 | 0 | - | 4.10 | 45,611 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,036 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,819 |
| Female Historical Figures | 0 | - | 4.31 | 33,096 |
| Historical Blunders | 0 | - | 4.33 | 91,675 |
| Territorial Accessions | 0 | - | 4.38 | 34,629 |
| People Known as "The Great" | 0 | - | 4.46 | 24,518 |
| This Day in History - July | 0 | - | 4.49 | 36,371 |
| This Day in History - August | 0 | - | 4.42 | 43,250 |
| This Day in History - September | 0 | - | 4.55 | 57,260 |
| This Day in History - October | 0 | - | 4.49 | 37,554 |
| This Day in History - January | 0 | - | 4.53 | 46,573 |
| This Day in History - March | 0 | - | 4.45 | 43,542 |
| Ancient Civilizations | 0 | - | 4.63 | 37,751 |
| The Places They Went #1 | 0 | - | 4.74 | 33,443 |
| Famous Inventors | 0 | - | 4.43 | 43,452 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,469 |
| European History for Dummies | 0 | - | 4.83 | 89,313 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,010,898 |
| The Michael Jackson Quiz | 0 | - | 4.21 | 27,972 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 711,427 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,090,662 |
| Best-Selling Breakfast Cereals | 0 | - | 3.68 | 92,774 |
| Islands by Country #1 | 0 | - | 4.87 | 174,473 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,911 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,272 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,329 |
| Crayola Crayon Colors 64 Pack | 0 | - | 4.99 | 62,038 |
| Countries by Emojis | 0 | - | 4.99 | 236,145 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,304 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,424 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,100 |
| Country Chain | 0 | - | 4.96 | 215,712 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 213,774 |
| Capital Cities Chain | 0 | - | 4.84 | 81,911 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 89,987 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,985 |
| Name a Valid Country #3 | 0 | - | 4.99 | 259,793 |
| Name a Valid Country #1 | 0 | - | 4.99 | 283,451 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,374 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,552 |
| Name a Valid Country #5 | 0 | - | 4.99 | 189,780 |
| Name a Valid Country #6 | 0 | - | 4.95 | 126,379 |
| Name a Valid Country #7 | 0 | - | 4.91 | 126,468 |
| Name a Valid Country #8 | 0 | - | 4.85 | 96,007 |
| Random Name a Valid Bordering Country | 0 | - | 4.99 | 74,217 |
| Name a Valid Country #10 | 0 | - | 4.93 | 41,418 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,238 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,697 |
| U.S. Celebrity Gossip by Year, 1991–2009 | 0 | - | 3.75 | 38,134 |
| Body Parts in History and Culture | 0 | - | 4.42 | 35,096 |
| History Analogies #1 | 0 | - | 4.53 | 89,777 |
| History Analogies #2 | 0 | - | 4.49 | 76,997 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 152,125 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 64,949 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 51,925 |
| History Analogies #3 | 0 | - | 4.61 | 80,429 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,142 |
| Which Came First? | 0 | - | 4.37 | 74,397 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,519 |
| Random History by Country | 0 | - | 4.53 | 34,656 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,541 |
| Animals in World History | 0 | - | 4.74 | 44,215 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,353 |
| History True or False #3 | 0 | - | 4.43 | 55,919 |
| World Leaders of the Cold War | 0 | - | 4.27 | 25,118 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.18 | 47,518 |
| A to Z: Legendary Creatures | 0 | - | 4.26 | 52,741 |
| Cold War Trivia #1 | 0 | - | 4.41 | 56,956 |
| Events in History #3 | 0 | - | 4.40 | 71,447 |
| Events in History #1 | 0 | - | 4.34 | 157,267 |
| Events in Ancient History | 0 | - | 4.50 | 35,707 |
| People Who Died Young #1 | 0 | - | 4.24 | 63,539 |
| Deaths by Date and Cause #1 | 0 | - | 4.37 | 94,888 |
| Deaths by Date and Cause #2 | 0 | - | 4.15 | 67,473 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,544 |
| Countries That Were Invaded | 0 | - | 4.54 | 96,912 |
| Political Quotes | 0 | - | 4.17 | 19,802 |
| This Day in History - April | 0 | - | 4.40 | 44,390 |
| This Day in History - May | 0 | - | 4.33 | 48,249 |
| This Day in History - June | 0 | - | 4.36 | 33,431 |
| This Day in History - November | 0 | - | 4.24 | 33,532 |
| This Day in History - December | 0 | - | 4.32 | 40,451 |
| This Day in History - February | 0 | - | 4.38 | 39,700 |
| The 19th Century | 0 | - | 4.53 | 67,877 |
| The 18th Century | 0 | - | 4.52 | 53,115 |
| The 16th Century | 0 | - | 4.77 | 58,734 |
| The 9th and 10th Century | 0 | - | 4.54 | 37,536 |
| The 21st Century | 0 | - | 4.48 | 105,281 |
| Military History Vocabulary | 0 | - | 4.91 | 66,646 |
| History Multiple Choice #1 | 0 | - | 4.46 | 81,510 |
| Years in History #2 - Multiple Choice | 0 | - | 4.43 | 41,405 |
| History Multiple Choice #2 | 0 | - | 4.43 | 49,800 |
| History Multiple Choice #3 | 0 | - | 4.45 | 48,539 |
| History Multiple Choice #5 | 0 | - | 4.49 | 32,263 |
