| Countries With The Most Bird Species | 0 | - | 4.93 | 32,730 |
| Animals in World History | 0 | - | 4.74 | 44,419 |
| National Animals | 0 | - | 4.24 | 89,588 |
| Nicknames in World History | 0 | - | 4.74 | 37,673 |
| "Second Best" History Edition | 0 | - | 4.94 | 62,715 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 488,392 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 711,764 |
| Animals of Australia | 0 | - | 4.52 | 42,277 |
| Birds by Picture #1 | 0 | - | 4.47 | 41,500 |
| Former Countries by Territory Map | 0 | - | 4.96 | 102,482 |
| Empires by Maps | 0 | - | 4.98 | 119,869 |
| Ultimate 20th Century History Quiz | 0 | - | 4.86 | 53,574 |
| Nicknames in U.S. History | 0 | - | 4.25 | 31,690 |
| The 7 Wonders of the Ancient World | 0 | - | 4.85 | 82,316 |
| Character Catchphrases Quiz | 0 | - | 4.49 | 47,449 |
| Metals of Antiquity | 0 | - | 4.94 | 93,269 |
| Earliest Domestication of Animals | 0 | - | 4.34 | 28,244 |
| Animals in the News | 0 | - | 4.37 | 26,772 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,559 |
| History: What Came First? #1 | 0 | - | 4.87 | 105,029 |
| Political Figures by Last Name #1 | 0 | - | 4.55 | 67,810 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 706,492 |
| Extinct Animals | 0 | - | 4.21 | 27,479 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,162 |
| Birds by Picture #2 | 0 | - | 4.33 | 36,257 |
| Birds by Picture #3 | 0 | - | 4.24 | 33,087 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,855 |
| Influential Women in History | 0 | - | 4.42 | 35,477 |
| Cradles of Civilization | 0 | - | 4.46 | 39,533 |
| Materials From History #1 | 0 | - | 4.56 | 51,460 |
| Historical Countries by Ruler | 0 | - | 4.48 | 48,516 |
| Biggest Nations and Empires Ever | 0 | - | 4.52 | 145,705 |
| Famous Explorers | 0 | - | 4.58 | 36,113 |
| Famous Empires by Description | 0 | - | 4.73 | 118,305 |
| Answers by Time Period | 0 | - | 4.64 | 55,500 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,935 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,207 |
| Movies with Animals in the Title #1 | 0 | - | 4.20 | 183,543 |
| Movies with Animals in the Title #2 | 0 | - | 4.28 | 108,252 |
| Cartoon Catchphrases Quiz | 0 | - | 4.20 | 69,773 |
| Disney Animals | 0 | - | 4.27 | 239,476 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,197 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,777 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,823 |
| Animals that Appear on a Coat of Arms | 0 | - | 4.49 | 24,802 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,994 |
| Random Capital to Country | 0 | - | 4.99 | 2,587,199 |
| Random Country to Capital | 0 | - | 4.98 | 917,516 |
| U.S. Celebrity Gossip by Year, 1991–2009 | 0 | - | 3.75 | 38,163 |
| Name a Valid Answer - British History | 0 | - | 4.57 | 15,127 |
| Former Flags | 0 | - | 4.97 | 107,423 |
| Years in History by Picture | 0 | - | 4.44 | 35,419 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,492 |
| Materials From History #2 | 0 | - | 4.59 | 31,448 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,860 |
| Five Most Guessed World Leaders by Country | 0 | - | 4.20 | 48,586 |
| Cold War Decoder | 0 | - | 4.83 | 52,234 |
| 20th Century Dates Quiz | 0 | - | 4.56 | 39,381 |
| Events in History #2 | 0 | - | 4.49 | 71,627 |
| Events in History #4 | 0 | - | 4.44 | 44,250 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,983 |
| Infamous Criminals - Mostly U.S. | 0 | - | 4.21 | 48,948 |
| Assassinations in History | 0 | - | 4.21 | 66,148 |
| Famous Seconds | 0 | - | 4.22 | 46,540 |
| Ages and Eras | 0 | - | 4.39 | 67,642 |
| Celebrity Knights of the United Kingdom | 0 | - | 4.23 | 39,467 |
| Titled People Quiz #1 | 0 | - | 4.11 | 45,756 |
| Titled People Quiz #3 | 0 | - | 4.34 | 43,139 |
| Job Titles Quiz #1 | 0 | - | 4.22 | 75,949 |
| Female Historical Figures | 0 | - | 4.28 | 33,219 |
| Historical Blunders | 0 | - | 4.34 | 91,881 |
| Territorial Accessions | 0 | - | 4.36 | 34,754 |
| People Known as "The Great" | 0 | - | 4.46 | 24,628 |
| Political Quotes | 0 | - | 4.17 | 19,863 |
| This Day in History - July | 0 | - | 4.49 | 36,433 |
| This Day in History - August | 0 | - | 4.42 | 43,331 |
| This Day in History - September | 0 | - | 4.55 | 57,393 |
| This Day in History - October | 0 | - | 4.49 | 37,604 |
| This Day in History - January | 0 | - | 4.50 | 46,669 |
| This Day in History - March | 0 | - | 4.45 | 43,628 |
| Ancient Civilizations | 0 | - | 4.64 | 37,903 |
| Military History Vocabulary | 0 | - | 4.91 | 66,998 |
| The Places They Went #1 | 0 | - | 4.74 | 33,501 |
| Famous Inventors | 0 | - | 4.43 | 43,518 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,788 |
| European History for Dummies | 0 | - | 4.83 | 89,728 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,438 |
| Animals in British History | 0 | - | 4.44 | 25,968 |
| 40 Historical People that Everyone Should Know | 0 | - | 4.09 | 1,012,991 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,637 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,865 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,625 |
| Animals by Range on a World Map | 0 | - | 4.96 | 25,451 |
| Pick a Picture - Animal Relations | 0 | - | 4.94 | 55,253 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,994 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,584 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,857 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,430 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,048 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,325,744 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,942 |
| Superhero Alter Egos | 0 | - | 4.29 | 164,531 |
| Who Did These Sidekicks Work With? | 0 | - | 4.25 | 110,038 |
| Original Mortal Kombat Characters | 0 | - | 4.09 | 40,847 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,626 |
| Crayola Crayon Colors 64 Pack | 0 | - | 4.99 | 62,410 |
| Marvel Cinematic Universe - All Movies | 0 | - | 4.89 | 337,096 |
| Countries by Emojis | 0 | - | 4.99 | 238,458 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,258 |
| World Capitals in the Answer | 0 | - | 4.94 | 76,800 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,618 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,995 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,892 |
| Capital Cities Chain | 0 | - | 4.84 | 82,431 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,592 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,259 |
| Name a Valid Capital #1 | 0 | - | 4.96 | 90,614 |
| The 2nd Millennium BC | 0 | - | 4.64 | 20,803 |
| Body Parts in History and Culture | 0 | - | 4.43 | 35,240 |
| History Analogies #1 | 0 | - | 4.53 | 89,906 |
| History Analogies #2 | 0 | - | 4.49 | 77,150 |
| Current Events by Year, 1990–2009 | 0 | - | 4.77 | 152,467 |
| Current Events by Year, 1970–1989 | 0 | - | 4.56 | 65,111 |
| Current Events by Year, 1930–1949 | 0 | - | 4.48 | 52,042 |
| Groups of Things - History #1 | 0 | - | 4.41 | 93,971 |
| History Analogies #3 | 0 | - | 4.61 | 80,591 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,377 |
| Which Came First? | 0 | - | 4.37 | 74,689 |
| Random History by Country | 0 | - | 4.53 | 34,803 |
| Valid Answer - World History #1 | 0 | - | 4.56 | 61,798 |
| People - Real or Fictional? | 0 | - | 4.56 | 58,732 |
| Places - Real or Fictional? | 0 | - | 4.59 | 49,523 |
| History True or False #3 | 0 | - | 4.43 | 56,730 |
| First Names of Recent World Leaders | 0 | - | 4.25 | 24,952 |
| A to Z: Legendary Creatures | 0 | - | 4.26 | 52,953 |
| WWII Geography | 0 | - | 4.81 | 120,079 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,355 |
| WWII Figures by Picture | 0 | - | 4.89 | 65,034 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,628 |
| Cold War Trivia #1 | 0 | - | 4.42 | 57,195 |
| Events in History #3 | 0 | - | 4.40 | 71,627 |
| Events in History #1 | 0 | - | 4.34 | 157,603 |
| Events in Ancient History | 0 | - | 4.50 | 35,915 |
| People Who Died Young #1 | 0 | - | 4.24 | 63,635 |
| Deaths by Date and Cause #1 | 0 | - | 4.38 | 95,129 |
| Deaths by Date and Cause #2 | 0 | - | 4.15 | 67,685 |
| Time Magazine Person of the Year | 0 | - | 4.53 | 73,954 |
| Countries That Were Invaded | 0 | - | 4.55 | 97,294 |
| This Day in History - April | 0 | - | 4.40 | 44,443 |
| This Day in History - May | 0 | - | 4.33 | 48,339 |
| This Day in History - June | 0 | - | 4.32 | 33,487 |
| This Day in History - November | 0 | - | 4.24 | 33,588 |
| This Day in History - December | 0 | - | 4.32 | 40,517 |
| This Day in History - February | 0 | - | 4.38 | 39,761 |
| The 19th Century | 0 | - | 4.53 | 68,069 |
| The 18th Century | 0 | - | 4.52 | 53,251 |
| The 16th Century | 0 | - | 4.77 | 58,847 |
| The 9th and 10th Century | 0 | - | 4.54 | 37,634 |
| The 21st Century | 0 | - | 4.48 | 105,793 |
| History Multiple Choice #1 | 0 | - | 4.44 | 81,825 |
| Years in History #2 - Multiple Choice | 0 | - | 4.43 | 41,594 |
| History Multiple Choice #2 | 0 | - | 4.43 | 49,983 |
| History Multiple Choice #3 | 0 | - | 4.45 | 48,692 |
| History Multiple Choice #5 | 0 | - | 4.49 | 32,415 |
| Three Real and One Fake - World History | 0 | - | 4.44 | 38,329 |
| Name the English Monarchs | 0 | - | 4.91 | 501,233 |
| Dark Ages History | 0 | - | 4.42 | 32,736 |
| 30 Historical People You Probably Don't Know | 0 | - | 4.36 | 60,952 |
| Name that Historical Figure #1 | 0 | - | 4.63 | 336,972 |
| Famous Cats | 0 | - | 4.08 | 18,025 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,137 |
| Star Wars Quotes | 0 | - | 4.85 | 183,232 |
| TV Character to Actor #1 | 0 | - | 4.24 | 10,213 |
| Brand Logos Quiz #1 | 0 | - | 4.82 | 2,416,720 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 130,358 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,701 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,770 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,370 |
| Random World Capitals on a Map | 0 | - | 4.93 | 134,238 |
| Capitals in Random Squares of the World Map | 0 | - | 4.92 | 75,272 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,198 |
| Random Circular Cutouts of the World Map | 0 | - | 4.96 | 75,728 |
| Random Point on Land to European Country | 0 | - | 4.93 | 76,790 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,789 |
| Name a Disney/Pixar Movie A-Z | 0 | - | 4.84 | 51,582 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 89,111 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,437 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,461 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 80,198 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,564 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,707 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,620 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,019 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,296 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,748 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,706 |
| Name a Valid African Country | 0 | - | 4.98 | 153,696 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,258 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,022 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,256 |
