| 1970s Decade Quiz | 0 | - | 4.20 | 52,847 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,877 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,612 |
| 1970s Movie Trivia | 0 | - | 4.28 | 21,617 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,967 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,590 |
| Countries by Founding Story | 0 | - | 4.95 | 77,058 |
| Independence from Whom | 0 | - | 4.99 | 211,293 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,694 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,378 |
| Movies by Year, 1950–1969 | 0 | - | 4.48 | 22,052 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,886 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,575 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,747 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,391 |
| Recently Independent Countries | 0 | - | 4.98 | 159,010 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,876 |
| Historical City to Country | 0 | - | 4.84 | 78,432 |
| Countries by Former Name | 0 | - | 4.99 | 124,913 |
| Cities by Former Name | 0 | - | 4.83 | 91,428 |
| NFL Football by Year, 2000–present | 0 | - | 4.26 | 28,022 |
| 2017 News Stories - Name the Country | 0 | - | 4.46 | 28,493 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,825 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,951 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,241 |
| NBA Basketball by Year, 1970–1999 | 0 | - | 4.28 | 44,917 |
| NBA Basketball by Year, 2000–Present | 0 | - | 4.34 | 60,728 |
| Fads of the 1970s | 0 | - | 4.19 | 28,377 |
| 1970s American TV Trivia | 0 | - | 4.12 | 12,453 |
| Former Flags | 0 | - | 4.97 | 107,481 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,877 |
| Historic Orient Express Routes Map | 0 | - | 4.99 | 53,405 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 50,010 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,445 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,037 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,385 |
| 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 | 99,478 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,105 |
| 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 | 28,463 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 53,113 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 44,253 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,278 |
| Highest Grossing 1970s Movies | 0 | - | 4.30 | 29,447 |
| Former Countries | 0 | - | 4.75 | 133,293 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,404 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,622 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,668 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,083 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,383 |
| Countries by Independence Day | 0 | - | 4.61 | 52,712 |
| Ancient City to Country | 0 | - | 4.70 | 107,935 |
| Former Countries by Capital | 0 | - | 4.45 | 127,363 |
| City-States | 0 | - | 4.53 | 37,229 |
| Battle to Country | 0 | - | 4.91 | 53,157 |
| 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 | 149,900 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 76,136 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,304 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,712 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,622 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,560 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,177 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,618 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,090 |
| People Born on Islands | 0 | - | 4.39 | 52,882 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,626 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,245 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,120 |
| City Where It Happened #1 | 0 | - | 4.24 | 106,286 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,097 |
| Roman Provinces on a Map | 0 | - | 4.54 | 36,856 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,786 |
| Famous Immigrants and Exiles | 0 | - | 4.45 | 23,323 |
| Guerrillas by Country | 0 | - | 4.40 | 41,076 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,413 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,260 |
| 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 | 59,797 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,615 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,345 |
| Prime Ministers of the UK | 0 | - | 4.95 | 437,899 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,688,463 |
| The Trojan War | 0 | - | 4.83 | 39,653 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,549 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,715 |
| WWII Geography | 0 | - | 4.81 | 120,129 |
| Countries in World War I | 0 | - | 4.88 | 227,836 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,168 |
| History of Russia Quiz | 0 | - | 4.49 | 31,882 |
| History of Italy | 0 | - | 4.55 | 31,936 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,525 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,421 |
| Roman Emperors | 0 | - | 4.95 | 119,663 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,156 |
| Name that Greek Letter | 0 | - | 4.93 | 323,104 |
| Quiz on the Year 2001 | 0 | - | 4.48 | 24,307 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,655 |
| 2010s Decade Quiz | 0 | - | 4.53 | 102,224 |
| 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 | 41,530 |
| 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 | 86,104 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,685 |
| All Modern-Day Countries Ever Controlled by Germanic People | 0 | - | 4.47 | 28,997 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,945 |
| Name the English Monarchs | 0 | - | 4.91 | 501,552 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,604 |
| 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 | 95,139 |
| 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 | 51,362 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,721 |
| 1970s Music Trivia | 0 | - | 4.29 | 31,593 |
| Who Did That 1970s Song #1 | 0 | - | 4.48 | 88,547 |
| Geography of the French Empire | 0 | - | 4.45 | 27,026 |
| History of India | 0 | - | 4.61 | 21,396 |
| The Portuguese Empire | 0 | - | 4.58 | 12,048 |
| History of South Africa | 0 | - | 4.60 | 17,662 |
| History of Iran | 0 | - | 4.66 | 16,340 |
| History of Austria | 0 | - | 4.70 | 17,835 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,623 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,556 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 85,667 |
| Communist Countries in History | 0 | - | 4.63 | 494,960 |
| Home Cities in History #1 | 0 | - | 4.04 | 16,559 |
| History of China | 0 | - | 4.37 | 57,053 |
| 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 | 42,846 |
| Ancient Greek Words | 0 | - | 4.93 | 111,361 |
| 20th Century A-Z | 0 | - | 4.50 | 53,657 |
| 19th Century A-Z | 0 | - | 4.77 | 47,235 |
| 18th Century A-Z | 0 | - | 4.54 | 43,120 |
| 2000s Decade Quiz | 0 | - | 4.23 | 121,424 |
| 1980s Decade Quiz | 0 | - | 4.38 | 77,086 |
| Inventions by Country #1 | 0 | - | 4.47 | 54,998 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,939 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,282 |
| Who Did That 1970s Song #2 | 0 | - | 4.25 | 53,457 |
| #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 | 123,870 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,853 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,886 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,111 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,354 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,155 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,478 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 4.01 | 19,595 |
| Countries in World War II | 0 | - | 4.54 | 910,918 |
| Home Cities in History Quiz #2 | 0 | - | 3.83 | 16,933 |
| Political Movements by Country | 0 | - | 4.46 | 72,470 |
| 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 | 436,350 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,013 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,942 |
| 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 | 24,862 |
| 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 | 61,731 |
| 1850s Decade Quiz | 0 | - | 4.42 | 35,155 |
| 1790s Decade Quiz | 0 | - | 4.55 | 33,603 |
| 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 | 43,255 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 17,102 |
| Inventions by Country #2 | 0 | - | 4.32 | 38,905 |
| Chinese Inventions | 0 | - | 4.30 | 33,783 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,689 |
| All Modern-Day Countries Ever Controlled by Slavic People | 0 | - | 4.16 | 28,537 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,307 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,312 |
| Geography of the British Empire | 0 | - | 4.48 | 39,631 |
| Medieval English History | 0 | - | 4.53 | 43,464 |
| History of France | 0 | - | 4.59 | 56,843 |
