| 1960s Decade Quiz #2 | 0 | - | 4.45 | 45,572 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 50,743 |
| Recently Independent Countries | 0 | - | 4.98 | 160,365 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,695 |
| WWII Geography | 0 | - | 4.81 | 121,253 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,478 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,765 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,674 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,834 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,509 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,440 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,424 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,130 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,149 |
| Countries by Founding Story | 0 | - | 4.95 | 77,812 |
| 1950s Decade Quiz | 0 | - | 4.42 | 49,760 |
| Independence from Whom | 0 | - | 4.99 | 213,105 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,462 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,861 |
| 1970s Decade Quiz | 0 | - | 4.22 | 60,901 |
| 1960s Catchphrases | 0 | - | 4.14 | 105,102 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,245 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,980 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,798 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,184 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 4.01 | 19,664 |
| Historical City to Country | 0 | - | 4.85 | 79,034 |
| Countries by Former Name | 0 | - | 4.99 | 125,847 |
| Cities by Former Name | 0 | - | 4.83 | 92,062 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 41,268 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,719 |
| 1960s American TV Trivia | 0 | - | 4.05 | 11,688 |
| Former Flags | 0 | - | 4.97 | 108,606 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,502 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,452 |
| Former Capitals | 0 | - | 4.88 | 71,683 |
| Battle to Country | 0 | - | 4.91 | 53,970 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,591 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,759 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,899 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,204 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,396 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,475 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,802 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 71,863 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 25,266 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,596 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,679 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 54,180 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 45,125 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,094 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,924 |
| Fads of the 1960s | 0 | - | 4.00 | 11,519 |
| Former Countries | 0 | - | 4.77 | 134,233 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,754 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,815 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,552 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,792 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,231 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,575 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,726,451 |
| WWII Movies by Plot | 0 | - | 4.22 | 27,164 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,683 |
| WWII Figures by Picture | 0 | - | 4.89 | 66,256 |
| Territory Changes in World War I | 0 | - | 4.88 | 47,200 |
| Countries by Independence Day | 0 | - | 4.62 | 52,860 |
| Ancient City to Country | 0 | - | 4.70 | 108,353 |
| Former Countries by Capital | 0 | - | 4.45 | 127,818 |
| City-States | 0 | - | 4.53 | 37,404 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,798 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,389 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,679 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,890 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.81 | 55,201 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,657 |
| Name the English Monarchs | 0 | - | 4.91 | 506,458 |
| Rat Pack Members | 0 | - | 4.03 | 5,196 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,292 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,903 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,099 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,825 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,165 |
| People Born on Islands | 0 | - | 4.39 | 53,064 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,766 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,265 |
| City Where It Happened #1 | 0 | - | 4.23 | 106,498 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,706 |
| Prime Ministers of the UK | 0 | - | 4.95 | 442,369 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,555 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,804 |
| The Trojan War | 0 | - | 4.83 | 39,993 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,969 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,570 |
| Roman Provinces on a Map | 0 | - | 4.53 | 37,340 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,163 |
| WWI... or WWII? | 0 | - | 4.85 | 143,447 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 86,603 |
| Countries in World War I | 0 | - | 4.88 | 229,166 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,426 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,956 |
| History of Russia Quiz | 0 | - | 4.47 | 32,006 |
| Famous Immigrants and Exiles | 0 | - | 4.46 | 23,735 |
| History of Italy | 0 | - | 4.55 | 32,148 |
| Guerrillas by Country | 0 | - | 4.40 | 41,233 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,594 |
| Roman Emperors | 0 | - | 4.95 | 121,220 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 43,306 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,002 |
| Name that Greek Letter | 0 | - | 4.93 | 324,996 |
| Ancient Greek Words | 0 | - | 4.93 | 112,477 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,849 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,697 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,504 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,276 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,981 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,216 |
| 1960s Music Trivia | 0 | - | 4.36 | 23,784 |
| Who Did That 1960s Song #1 | 0 | - | 4.38 | 47,743 |
| Who Did That 1960s Song #2 | 0 | - | 4.46 | 41,122 |
| Woodstock Performers | 0 | - | 4.55 | 10,679 |
| #1 Hits of the 1960s | 0 | - | 4.59 | 43,009 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,611 |
| Geography of the French Empire | 0 | - | 4.45 | 27,218 |
| History of India | 0 | - | 4.62 | 21,515 |
| History of Mexico | 0 | - | 4.52 | 15,366 |
| The Portuguese Empire | 0 | - | 4.58 | 12,107 |
| History of South Africa | 0 | - | 4.60 | 17,765 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,663 |
| History of Iran | 0 | - | 4.66 | 16,425 |
| History of The Netherlands | 0 | - | 4.46 | 17,556 |
| History of Austria | 0 | - | 4.70 | 17,975 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,934 |
| National Founders | 0 | - | 4.40 | 83,977 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,643 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,201 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,645 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,823 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,878 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,969 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,874 |
| Most Populous Countries in 1950 | 0 | - | 4.63 | 86,342 |
| Countries in World War II | 0 | - | 4.53 | 919,000 |
| Notable People of WWII | 0 | - | 4.53 | 86,569 |
| WWII Trivia #2 | 0 | - | 4.52 | 104,591 |
| World War I Quiz | 0 | - | 4.78 | 102,072 |
| WWI A-Z | 0 | - | 4.51 | 38,605 |
| Communist Countries in History | 0 | - | 4.63 | 498,260 |
| Political Movements by Country | 0 | - | 4.46 | 72,777 |
| Home Cities in History #1 | 0 | - | 4.04 | 16,606 |
| History of China | 0 | - | 4.35 | 57,583 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,560 |
| The Vikings! | 0 | - | 4.46 | 28,407 |
| The French Revolution | 0 | - | 4.47 | 24,148 |
| The Most Recent... United States | 0 | - | 4.46 | 18,577 |
| Byzantine History | 0 | - | 4.91 | 29,024 |
| Byzantine Emperors | 0 | - | 4.93 | 14,601 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,858 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,505 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,243 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,048 |
| NFL Football by Year, 2000–present | 0 | - | 4.26 | 28,214 |
| 2017 News Stories - Name the Country | 0 | - | 4.46 | 28,627 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,930 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,880 |
| Movies by Year, 1970–1989 | 0 | - | 4.38 | 25,473 |
| NBA Basketball by Year, 1970–1999 | 0 | - | 4.28 | 45,151 |
| NBA Basketball by Year, 2000–Present | 0 | - | 4.34 | 61,380 |
| Countries that Have Won the Most Battles | 0 | - | 4.01 | 39,783 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,658 |
| Inventions by Country #1 | 0 | - | 4.47 | 55,185 |
| Inventions by Country #2 | 0 | - | 4.32 | 39,010 |
| Chinese Inventions | 0 | - | 4.30 | 33,865 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,383 |
| All Modern-Day Countries Ever Controlled by Germanic People | 0 | - | 4.47 | 29,193 |
| All Modern-Day Countries Ever Controlled by Slavic People | 0 | - | 4.19 | 28,742 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,464 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,260 |
| Geography of the British Empire | 0 | - | 4.48 | 39,848 |
| Medieval English History | 0 | - | 4.53 | 43,657 |
| History of France | 0 | - | 4.61 | 57,627 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 72,128 |
| 1980s Celebrities by Picture #1 | 0 | - | 3.97 | 61,795 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.14 | 79,775 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,836 |
| Fresh Prince of Bel-Air Lyrics | 0 | - | 4.86 | 590,249 |
| Seinfeld Trivia | 0 | - | 4.57 | 35,244 |
| Main Friends Characters and Actors | 0 | - | 4.42 | 52,393 |
| Friends - Finish the Quote | 0 | - | 4.57 | 44,275 |
| 1970s Movie Trivia | 0 | - | 4.28 | 21,836 |
| Movies by Year, 1950–1969 | 0 | - | 4.48 | 22,126 |
| 2000s Celebrities by Picture #1 | 0 | - | 3.93 | 102,696 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 96,106 |
| Characters from The Office | 0 | - | 4.48 | 46,461 |
| The Office Trivia #1 | 0 | - | 4.43 | 95,284 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,879 |
| Breaking Bad Trivia | 0 | - | 4.45 | 55,464 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,377 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,352 |
| 1930s Celebrities by Picture | 0 | - | 4.33 | 12,727 |
| Name a Valid Answer - British History | 0 | - | 4.57 | 15,242 |
