| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,484 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 49,707 |
| Recently Independent Countries | 0 | - | 4.98 | 157,937 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,260 |
| WWII Geography | 0 | - | 4.81 | 119,307 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,306 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 69,994 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,103 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,595 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,323 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,132 |
| 1970s Decade Quiz | 0 | - | 4.20 | 52,323 |
| 1960s Catchphrases | 0 | - | 4.16 | 104,154 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,113 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,427 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,829 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,426 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,050 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,744 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,123 |
| Countries by Founding Story | 0 | - | 4.95 | 76,489 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 4.01 | 19,540 |
| Independence from Whom | 0 | - | 4.99 | 209,590 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,675 |
| Historical City to Country | 0 | - | 4.84 | 78,110 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,970 |
| Countries by Former Name | 0 | - | 4.99 | 124,233 |
| Cities by Former Name | 0 | - | 4.84 | 90,928 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.95 | 40,674 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 54,837 |
| 1960s American TV Trivia | 0 | - | 4.05 | 11,608 |
| Former Flags | 0 | - | 4.97 | 106,621 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 77,987 |
| Former Capitals | 0 | - | 4.88 | 71,123 |
| Battle to Country | 0 | - | 4.91 | 52,481 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,666 |
| Countries of the World in 1444 | 0 | - | 4.98 | 59,477 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,842 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.99 | 68,168 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,870 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,364 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,331 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,059 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,445 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,970 |
| Countries of Europe before World War II with a Map | 0 | - | 4.94 | 52,248 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 43,595 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,809 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,256 |
| Fads of the 1960s | 0 | - | 4.00 | 11,426 |
| Former Countries | 0 | - | 4.75 | 132,656 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,123 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,473 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,815 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,196 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,506 |
| City Where It Happened #2 | 0 | - | 4.42 | 52,950 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,218 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,434 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,652,034 |
| The Trojan War | 0 | - | 4.83 | 39,419 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,479 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,347 |
| WWII Movies by Plot | 0 | - | 4.21 | 26,962 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,095 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,480 |
| Countries in World War I | 0 | - | 4.88 | 226,545 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,198 |
| Countries by Independence Day | 0 | - | 4.56 | 52,595 |
| Ancient City to Country | 0 | - | 4.70 | 107,589 |
| Former Countries by Capital | 0 | - | 4.45 | 127,018 |
| City-States | 0 | - | 4.53 | 37,087 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,197 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,021 |
| Roman Emperors | 0 | - | 4.95 | 118,400 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,603 |
| Name that Greek Letter | 0 | - | 4.94 | 321,534 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,113 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,333 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,452 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,245 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,419 |
| Name the English Monarchs | 0 | - | 4.92 | 497,696 |
| Rat Pack Members | 0 | - | 4.03 | 5,159 |
| Who Did That 1960s Song #2 | 0 | - | 4.46 | 40,671 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,092 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,384 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,374 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,474 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,006 |
| People Born on Islands | 0 | - | 4.39 | 52,739 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,923 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,009 |
| City Where It Happened #1 | 0 | - | 4.24 | 106,119 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 42,668 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,509 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,472 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,743 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,649 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,631 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,186 |
| Most Populous Countries in 1950 | 0 | - | 4.63 | 85,704 |
| Roman Provinces on a Map | 0 | - | 4.54 | 36,538 |
| WWI... or WWII? | 0 | - | 4.85 | 140,565 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 84,752 |
| Communist Countries in History | 0 | - | 4.63 | 492,337 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,974 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,638 |
| History of Russia Quiz | 0 | - | 4.49 | 31,784 |
| Famous Immigrants and Exiles | 0 | - | 4.48 | 20,433 |
| History of Italy | 0 | - | 4.55 | 31,806 |
| Guerrillas by Country | 0 | - | 4.40 | 40,943 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 42,600 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,353 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,594 |
| Ancient Greek Words | 0 | - | 4.92 | 110,631 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,491 |
| Inventions by Country #1 | 0 | - | 4.46 | 54,879 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.74 | 45,122 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.77 | 32,917 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,403 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,494 |
| All Modern-Day Countries Ever Controlled by Germanic People | 0 | - | 4.47 | 28,831 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,221 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 78,966 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 71,905 |
| Fresh Prince of Bel-Air Lyrics | 0 | - | 4.85 | 587,716 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,602 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,389 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 94,539 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,753 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 50,911 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 45,908 |
| 1960s Music Trivia | 0 | - | 4.36 | 23,551 |
| Who Did That 1960s Song #1 | 0 | - | 4.38 | 47,307 |
| Woodstock Performers | 0 | - | 4.55 | 10,598 |
| #1 Hits of the 1960s | 0 | - | 4.59 | 42,598 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,088 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,488 |
| Geography of the French Empire | 0 | - | 4.48 | 26,923 |
| History of India | 0 | - | 4.61 | 21,273 |
| History of Mexico | 0 | - | 4.58 | 15,227 |
| History of Egypt | 0 | - | 4.58 | 23,930 |
| The Portuguese Empire | 0 | - | 4.54 | 11,986 |
| History of South Africa | 0 | - | 4.60 | 17,599 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,151 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,979 |
| History of Iran | 0 | - | 4.65 | 16,262 |
| History of The Netherlands | 0 | - | 4.46 | 17,305 |
| History of Austria | 0 | - | 4.70 | 17,742 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,013 |
| National Founders | 0 | - | 4.40 | 83,640 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,209 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,660 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,863 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,906 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,429 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,967 |
| Presidential Middle Names | 0 | - | 4.41 | 59,675 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,701 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,786 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,155 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 72,861 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,838 |
| Countries in World War II | 0 | - | 4.53 | 904,097 |
| Notable People of WWII | 0 | - | 4.53 | 85,304 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,400 |
| WWII Trivia #1 | 0 | - | 4.36 | 176,569 |
| Important Cities in WWII | 0 | - | 4.42 | 92,860 |
| WWII A-Z #1 | 0 | - | 4.80 | 102,350 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,305 |
| WWII Decoder | 0 | - | 4.41 | 53,022 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,265 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 54,725 |
| WWII True or False? | 0 | - | 4.56 | 57,010 |
| 1950s Decade Quiz | 0 | - | 4.40 | 48,908 |
| World War I Quiz | 0 | - | 4.78 | 100,220 |
| WWI A-Z | 0 | - | 4.50 | 38,008 |
| Flags of WW1 | 0 | - | 4.60 | 37,917 |
| Political Movements by Country | 0 | - | 4.46 | 72,247 |
| Home Cities in History #1 | 0 | - | 4.04 | 16,520 |
| History of Spain | 0 | - | 4.29 | 20,996 |
| History of China | 0 | - | 4.37 | 56,673 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,380 |
| The Vikings! | 0 | - | 4.45 | 28,237 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,015 |
| The French Revolution | 0 | - | 4.46 | 23,769 |
| People on Money - United States | 0 | - | 4.31 | 63,200 |
| American Founding Fathers | 0 | - | 4.41 | 23,070 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,230 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,719 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,985 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,643 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,452 |
| The Most Recent... United States | 0 | - | 4.45 | 18,276 |
| The American Civil War | 0 | - | 4.62 | 52,118 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,524 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,656 |
| Famous Ancient Romans | 0 | - | 4.69 | 85,007 |
| Roman Names for Places | 0 | - | 4.62 | 57,858 |
