| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,580 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 49,772 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,149 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,223 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,643 |
| Places Mentioned in the Song "Kokomo" | 0 | - | 4.44 | 16,981 |
| 1960s Catchphrases | 0 | - | 4.14 | 104,329 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,138 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,402 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,356 |
| Countries by Founding Story | 0 | - | 4.95 | 76,756 |
| Independence from Whom | 0 | - | 4.99 | 210,250 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,135 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,151 |
| 1970s Decade Quiz | 0 | - | 4.20 | 52,423 |
| 1960s American TV Trivia | 0 | - | 4.05 | 11,626 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,687 |
| Former Flags | 0 | - | 4.97 | 107,015 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,945 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,822 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,544 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,697 |
| Historic Orient Express Routes Map | 0 | - | 5.00 | 53,176 |
| Recently Independent Countries | 0 | - | 4.98 | 158,248 |
| Flags of WW1 | 0 | - | 4.60 | 38,090 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,336 |
| Historical City to Country | 0 | - | 4.84 | 78,259 |
| Countries by Former Name | 0 | - | 4.99 | 124,571 |
| Cities by Former Name | 0 | - | 4.84 | 91,175 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,333 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,066 |
| Countries of the World in 1444 | 0 | - | 4.98 | 59,789 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,048 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,807 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,025 |
| Countries of Europe before World War II with a Map | 0 | - | 4.94 | 52,632 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 43,887 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,026 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,192 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,679 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,324 |
| Soviet Leaders 1917–1991 | 0 | - | 4.43 | 94,613 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,078 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,668,320 |
| WWII Geography | 0 | - | 4.81 | 119,617 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,607 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,762 |
| Name that Greek Letter | 0 | - | 4.93 | 322,247 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,357 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,179 |
| Battle to Country | 0 | - | 4.91 | 52,742 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,383 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,278 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,561 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,731 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,345 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,725 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,816 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,384 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,615 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,267 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,455 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,644 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,348 |
| Name the English Monarchs | 0 | - | 4.92 | 499,433 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,380 |
| Fads of the 1960s | 0 | - | 4.00 | 11,445 |
| Former Countries | 0 | - | 4.75 | 132,893 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,128 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,500 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,672 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,538 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,046 |
| People Born on Islands | 0 | - | 4.39 | 52,798 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,129 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,257 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,551 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,059 |
| City Where It Happened #1 | 0 | - | 4.24 | 106,201 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,017 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,297 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 42,857 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,590 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,117 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,694 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,732 |
| The Trojan War | 0 | - | 4.83 | 39,522 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,983 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,886 |
| Roman Provinces on a Map | 0 | - | 4.54 | 36,705 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,871 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,753 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 85,070 |
| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,568 |
| Countries in World War I | 0 | - | 4.88 | 227,019 |
| Countries by Independence Day | 0 | - | 4.61 | 52,653 |
| Ancient City to Country | 0 | - | 4.70 | 107,746 |
| Former Countries by Capital | 0 | - | 4.45 | 127,196 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,061 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,705 |
| History of Russia Quiz | 0 | - | 4.49 | 31,828 |
| Famous Immigrants and Exiles | 0 | - | 4.45 | 23,009 |
| History of Italy | 0 | - | 4.55 | 31,875 |
| City-States | 0 | - | 4.53 | 37,154 |
| Guerrillas by Country | 0 | - | 4.40 | 41,011 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,208 |
| Roman Emperors | 0 | - | 4.95 | 118,995 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 42,707 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,701 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,762 |
| Ancient Greek Words | 0 | - | 4.93 | 110,989 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.74 | 45,266 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.77 | 33,127 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,963 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,699 |
| Fresh Prince of Bel-Air Lyrics | 0 | - | 4.85 | 588,239 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,725 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,493 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,844 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,749 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,989 |
| 1960s Music Trivia | 0 | - | 4.36 | 23,591 |
| Rat Pack Members | 0 | - | 4.03 | 5,168 |
| Who Did That 1960s Song #1 | 0 | - | 4.38 | 47,367 |
| Who Did That 1960s Song #2 | 0 | - | 4.46 | 40,740 |
| Woodstock Performers | 0 | - | 4.55 | 10,610 |
| #1 Hits of the 1960s | 0 | - | 4.59 | 42,660 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,134 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,510 |
| Geography of the French Empire | 0 | - | 4.45 | 26,977 |
| History of India | 0 | - | 4.61 | 21,327 |
| History of Mexico | 0 | - | 4.58 | 15,249 |
| History of Egypt | 0 | - | 4.58 | 23,970 |
| The Portuguese Empire | 0 | - | 4.58 | 12,016 |
| History of South Africa | 0 | - | 4.60 | 17,629 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,264 |
| History of Iran | 0 | - | 4.66 | 16,294 |
| History of The Netherlands | 0 | - | 4.46 | 17,350 |
| History of Austria | 0 | - | 4.70 | 17,785 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,227 |
| National Founders | 0 | - | 4.40 | 83,707 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,519 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,763 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,436 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,855 |
| The Dictator Files: Joseph Stalin | 0 | - | 4.37 | 48,361 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,140 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,582 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 4.01 | 19,560 |
| Countries in World War II | 0 | - | 4.54 | 907,099 |
| Important Cities in WWII | 0 | - | 4.42 | 93,059 |
| WWII First Names | 0 | - | 4.44 | 41,630 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,981 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,205 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,822 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,704 |
| Communist Countries in History | 0 | - | 4.63 | 493,496 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,105 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,397 |
| Political Movements by Country | 0 | - | 4.46 | 72,352 |
| Home Cities in History #1 | 0 | - | 4.04 | 16,535 |
| History of China | 0 | - | 4.37 | 56,836 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,413 |
| The Vikings! | 0 | - | 4.46 | 28,272 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,063 |
| The French Revolution | 0 | - | 4.46 | 23,843 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,033 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,656 |
| The Most Recent... United States | 0 | - | 4.45 | 18,347 |
| The American Civil War | 0 | - | 4.62 | 52,238 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,596 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,748 |
| Roman Names for Places | 0 | - | 4.62 | 57,998 |
| Byzantine History | 0 | - | 4.91 | 28,671 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,844 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,821 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,513 |
| NFL Football by Year, 2000–present | 0 | - | 4.26 | 27,926 |
| 2017 News Stories - Name the Country | 0 | - | 4.46 | 28,427 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,783 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,580 |
| Movies by Year, 1970–1989 | 0 | - | 4.38 | 25,377 |
| NBA Basketball by Year, 1970–1999 | 0 | - | 4.28 | 44,834 |
| NBA Basketball by Year, 2000–Present | 0 | - | 4.33 | 60,417 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,431 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,097 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 17,062 |
| Inventions by Country #1 | 0 | - | 4.46 | 54,924 |
| Inventions by Country #2 | 0 | - | 4.34 | 38,852 |
| Chinese Inventions | 0 | - | 4.30 | 33,744 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,018 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,879 |
| French History Multiple Choice | 0 | - | 4.55 | 32,922 |
| All Modern-Day Countries Ever Controlled by Germanic People | 0 | - | 4.47 | 28,895 |
| All Modern-Day Countries Ever Controlled by Slavic People | 0 | - | 4.16 | 28,446 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,250 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,716 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,013 |
| Geography of the British Empire | 0 | - | 4.48 | 39,553 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,662 |
