| 1970s Decade Quiz | 0 | - | 4.20 | 52,845 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,876 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,611 |
| 1970s Movie Trivia | 0 | - | 4.28 | 21,609 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,964 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,589 |
| Countries by Founding Story | 0 | - | 4.95 | 77,057 |
| Independence from Whom | 0 | - | 4.99 | 211,286 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,688 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,377 |
| Movies by Year, 1950–1969 | 0 | - | 4.48 | 22,052 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,885 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,569 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,740 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,384 |
| Recently Independent Countries | 0 | - | 4.98 | 159,004 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,876 |
| Historical City to Country | 0 | - | 4.84 | 78,431 |
| Countries by Former Name | 0 | - | 4.99 | 124,912 |
| Cities by Former Name | 0 | - | 4.83 | 91,424 |
| NFL Football by Year, 2000–present | 0 | - | 4.26 | 28,021 |
| 2017 News Stories - Name the Country | 0 | - | 4.46 | 28,492 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,824 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,949 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,237 |
| NBA Basketball by Year, 1970–1999 | 0 | - | 4.28 | 44,917 |
| NBA Basketball by Year, 2000–Present | 0 | - | 4.34 | 60,724 |
| Fads of the 1970s | 0 | - | 4.19 | 28,377 |
| 1970s American TV Trivia | 0 | - | 4.12 | 12,453 |
| Former Flags | 0 | - | 4.97 | 107,476 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,877 |
| Historic Orient Express Routes Map | 0 | - | 4.99 | 53,400 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 50,007 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,443 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,034 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,384 |
| MLB Baseball by Year, 1960–1989 | 0 | - | 4.09 | 18,682 |
| NFL Football by Year, 1967–1999 | 0 | - | 4.34 | 25,452 |
| MLB Baseball by Year, 1990–present | 0 | - | 4.02 | 14,989 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,477 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,103 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,293 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,817 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,462 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 53,107 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 44,250 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,273 |
| Highest Grossing 1970s Movies | 0 | - | 4.30 | 29,447 |
| Former Countries | 0 | - | 4.75 | 133,264 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,399 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,621 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,664 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,082 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,382 |
| Countries by Independence Day | 0 | - | 4.61 | 52,711 |
| Ancient City to Country | 0 | - | 4.70 | 107,930 |
| Former Countries by Capital | 0 | - | 4.45 | 127,363 |
| City-States | 0 | - | 4.53 | 37,228 |
| Battle to Country | 0 | - | 4.91 | 53,154 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,621 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,894 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,135 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,299 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,709 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,616 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,558 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,177 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,616 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,089 |
| People Born on Islands | 0 | - | 4.39 | 52,881 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,621 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,241 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,120 |
| City Where It Happened #1 | 0 | - | 4.24 | 106,285 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,093 |
| Roman Provinces on a Map | 0 | - | 4.54 | 36,855 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,785 |
| Famous Immigrants and Exiles | 0 | - | 4.45 | 23,322 |
| Guerrillas by Country | 0 | - | 4.40 | 41,075 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,412 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,259 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,952 |
| 1970s Celebrities | 0 | - | 4.03 | 13,749 |
| People Portrayed by Andy Warhol | 0 | - | 4.35 | 37,903 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,796 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,615 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,342 |
| Prime Ministers of the UK | 0 | - | 4.95 | 437,882 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,688,309 |
| The Trojan War | 0 | - | 4.83 | 39,652 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,547 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,713 |
| WWII Geography | 0 | - | 4.81 | 120,127 |
| Countries in World War I | 0 | - | 4.88 | 227,832 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,168 |
| History of Russia Quiz | 0 | - | 4.49 | 31,880 |
| History of Italy | 0 | - | 4.55 | 31,936 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,522 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,421 |
| Roman Emperors | 0 | - | 4.95 | 119,660 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,142 |
| Name that Greek Letter | 0 | - | 4.93 | 323,098 |
| Quiz on the Year 2001 | 0 | - | 4.48 | 24,306 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,655 |
| 2010s Decade Quiz | 0 | - | 4.53 | 102,212 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.75 | 45,437 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.77 | 33,297 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,527 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,927 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,103 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,682 |
| All Modern-Day Countries Ever Controlled by Germanic People | 0 | - | 4.47 | 28,996 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,941 |
| Name the English Monarchs | 0 | - | 4.91 | 501,524 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,603 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 79,299 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,288 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 95,134 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,121 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,102 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,327 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,361 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,720 |
| 1970s Music Trivia | 0 | - | 4.29 | 31,592 |
| Who Did That 1970s Song #1 | 0 | - | 4.48 | 88,545 |
| Geography of the French Empire | 0 | - | 4.45 | 27,025 |
| History of India | 0 | - | 4.61 | 21,396 |
| The Portuguese Empire | 0 | - | 4.58 | 12,048 |
| History of South Africa | 0 | - | 4.60 | 17,661 |
| History of Iran | 0 | - | 4.66 | 16,340 |
| History of Austria | 0 | - | 4.70 | 17,835 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,614 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,551 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 85,664 |
| Communist Countries in History | 0 | - | 4.63 | 494,948 |
| Home Cities in History #1 | 0 | - | 4.04 | 16,559 |
| History of China | 0 | - | 4.37 | 57,050 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,464 |
| The Vikings! | 0 | - | 4.46 | 28,319 |
| The French Revolution | 0 | - | 4.46 | 23,903 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 42,844 |
| Ancient Greek Words | 0 | - | 4.93 | 111,360 |
| 20th Century A-Z | 0 | - | 4.50 | 53,656 |
| 19th Century A-Z | 0 | - | 4.77 | 47,234 |
| 18th Century A-Z | 0 | - | 4.54 | 43,119 |
| 2000s Decade Quiz | 0 | - | 4.23 | 121,400 |
| 1980s Decade Quiz | 0 | - | 4.38 | 77,080 |
| Inventions by Country #1 | 0 | - | 4.47 | 54,998 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,937 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,275 |
| Who Did That 1970s Song #2 | 0 | - | 4.25 | 53,456 |
| #1 Hits of the 1970s | 0 | - | 4.44 | 84,826 |
| I Will Survive Lyrics | 0 | - | 4.25 | 37,487 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,547 |
| History of Mexico | 0 | - | 4.58 | 15,291 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,391 |
| History of The Netherlands | 0 | - | 4.46 | 17,407 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,431 |
| National Founders | 0 | - | 4.40 | 83,792 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,867 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,853 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,880 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,107 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,353 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,154 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,458 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 4.01 | 19,595 |
| Countries in World War II | 0 | - | 4.54 | 910,882 |
| Home Cities in History Quiz #2 | 0 | - | 3.83 | 16,933 |
| Political Movements by Country | 0 | - | 4.46 | 72,468 |
| History of Spain | 0 | - | 4.23 | 21,071 |
| The Most Recent... United States | 0 | - | 4.45 | 18,407 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,339 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,010 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,941 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,876 |
| Quiz on the Year 1997 | 0 | - | 4.40 | 21,038 |
| Quiz on the Year 1998 | 0 | - | 4.33 | 17,301 |
| Quiz on the Year 2000 | 0 | - | 4.08 | 21,212 |
| Movies by Year, 1970–1989 | 0 | - | 4.38 | 25,403 |
| 16th Century A-Z | 0 | - | 4.58 | 24,861 |
| 15th Century A-Z | 0 | - | 4.49 | 23,896 |
| 14th Century A-Z | 0 | - | 4.41 | 24,335 |
| 17th Century A-Z | 0 | - | 4.78 | 34,600 |
| 1990s Decade Quiz | 0 | - | 4.00 | 61,721 |
| 1850s Decade Quiz | 0 | - | 4.42 | 35,154 |
| 1790s Decade Quiz | 0 | - | 4.55 | 33,601 |
| 1800s Decade Quiz | 0 | - | 4.47 | 31,895 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,525 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,253 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 17,102 |
| Inventions by Country #2 | 0 | - | 4.32 | 38,905 |
| Chinese Inventions | 0 | - | 4.30 | 33,782 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,687 |
| All Modern-Day Countries Ever Controlled by Slavic People | 0 | - | 4.16 | 28,536 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,307 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,309 |
| Geography of the British Empire | 0 | - | 4.48 | 39,631 |
| Medieval English History | 0 | - | 4.53 | 43,464 |
| History of France | 0 | - | 4.59 | 56,840 |
