| 1960s Decade Quiz #2 | 0 | - | 4.45 | 45,204 |
| Recently Independent Countries | 0 | - | 4.98 | 159,533 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,574 |
| WWII Geography | 0 | - | 4.81 | 120,617 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,433 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,577 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,538 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,788 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,457 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,348 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,365 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,551 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,894 |
| Countries by Founding Story | 0 | - | 4.95 | 77,418 |
| 1950s Decade Quiz | 0 | - | 4.41 | 49,436 |
| Independence from Whom | 0 | - | 4.99 | 212,239 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,831 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,629 |
| 1970s Decade Quiz | 0 | - | 4.20 | 53,426 |
| 1960s Catchphrases | 0 | - | 4.14 | 104,941 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,081 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,337 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,893 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,425 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 4.01 | 19,629 |
| Historical City to Country | 0 | - | 4.84 | 78,666 |
| Countries by Former Name | 0 | - | 4.99 | 125,409 |
| Cities by Former Name | 0 | - | 4.83 | 91,769 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 41,137 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,483 |
| 1960s American TV Trivia | 0 | - | 4.05 | 11,674 |
| Former Flags | 0 | - | 4.97 | 108,023 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,104 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,234 |
| Historic Orient Express Routes Map | 0 | - | 5.00 | 53,615 |
| Former Capitals | 0 | - | 4.88 | 71,539 |
| Battle to Country | 0 | - | 4.91 | 53,581 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,103 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,475 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,605 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,957 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,814 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,730 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,176 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,387 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 25,065 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,197 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,589 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 53,690 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 44,760 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,798 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,769 |
| Fads of the 1960s | 0 | - | 4.00 | 11,494 |
| Former Countries | 0 | - | 4.75 | 133,970 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,601 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,728 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,134 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,077 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,162 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,491 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,710,602 |
| WWII Movies by Plot | 0 | - | 4.21 | 27,119 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,521 |
| WWII Figures by Picture | 0 | - | 4.89 | 65,832 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,942 |
| Countries by Independence Day | 0 | - | 4.61 | 52,788 |
| Ancient City to Country | 0 | - | 4.70 | 108,167 |
| Former Countries by Capital | 0 | - | 4.45 | 127,627 |
| City-States | 0 | - | 4.53 | 37,316 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,302 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,107 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,335 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,548 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,981 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,373 |
| Name the English Monarchs | 0 | - | 4.91 | 504,291 |
| Rat Pack Members | 0 | - | 4.03 | 5,190 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,230 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,768 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,980 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,733 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,131 |
| People Born on Islands | 0 | - | 4.39 | 52,980 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,571 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,196 |
| City Where It Happened #1 | 0 | - | 4.23 | 106,402 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,409 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,349 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,216 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,096 |
| The Trojan War | 0 | - | 4.83 | 39,816 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,328 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,621 |
| Roman Provinces on a Map | 0 | - | 4.54 | 37,093 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,482 |
| WWI... or WWII? | 0 | - | 4.85 | 142,704 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 86,186 |
| Countries in World War I | 0 | - | 4.88 | 228,550 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,311 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,887 |
| History of Russia Quiz | 0 | - | 4.47 | 31,962 |
| Famous Immigrants and Exiles | 0 | - | 4.46 | 23,566 |
| History of Italy | 0 | - | 4.55 | 32,068 |
| Guerrillas by Country | 0 | - | 4.40 | 41,168 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,672 |
| Roman Emperors | 0 | - | 4.95 | 120,458 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 43,053 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,377 |
| Name that Greek Letter | 0 | - | 4.93 | 324,263 |
| Ancient Greek Words | 0 | - | 4.93 | 111,986 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,647 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,498 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,256 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,070 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,787 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,102 |
| 1960s Music Trivia | 0 | - | 4.36 | 23,711 |
| Who Did That 1960s Song #1 | 0 | - | 4.38 | 47,537 |
| Who Did That 1960s Song #2 | 0 | - | 4.46 | 40,913 |
| Woodstock Performers | 0 | - | 4.55 | 10,654 |
| #1 Hits of the 1960s | 0 | - | 4.59 | 42,864 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,588 |
| Geography of the French Empire | 0 | - | 4.45 | 27,161 |
| History of India | 0 | - | 4.62 | 21,465 |
| History of Mexico | 0 | - | 4.58 | 15,339 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| History of South Africa | 0 | - | 4.60 | 17,725 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,538 |
| History of Iran | 0 | - | 4.66 | 16,388 |
| History of The Netherlands | 0 | - | 4.46 | 17,493 |
| History of Austria | 0 | - | 4.70 | 17,918 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,670 |
| National Founders | 0 | - | 4.40 | 83,896 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,301 |
| Prime Ministers of Australia | 0 | - | 4.50 | 32,033 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,440 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,705 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,511 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,854 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,856 |
| Most Populous Countries in 1950 | 0 | - | 4.63 | 86,159 |
| Countries in World War II | 0 | - | 4.55 | 915,244 |
| Notable People of WWII | 0 | - | 4.53 | 86,047 |
| WWII Trivia #2 | 0 | - | 4.52 | 104,331 |
| World War I Quiz | 0 | - | 4.78 | 101,478 |
| WWI A-Z | 0 | - | 4.51 | 38,458 |
| Communist Countries in History | 0 | - | 4.63 | 496,741 |
| Political Movements by Country | 0 | - | 4.46 | 72,640 |
| Home Cities in History #1 | 0 | - | 4.04 | 16,583 |
| History of China | 0 | - | 4.37 | 57,358 |
| The Vikings! | 0 | - | 4.46 | 28,373 |
| The French Revolution | 0 | - | 4.47 | 24,072 |
| The Most Recent... United States | 0 | - | 4.46 | 18,507 |
| Byzantine History | 0 | - | 4.91 | 28,926 |
| Byzantine Emperors | 0 | - | 4.92 | 14,399 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,256 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,297 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,095 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,954 |
| NFL Football by Year, 2000–present | 0 | - | 4.26 | 28,134 |
| 2017 News Stories - Name the Country | 0 | - | 4.46 | 28,553 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,883 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,776 |
| Movies by Year, 1970–1989 | 0 | - | 4.38 | 25,440 |
| NBA Basketball by Year, 1970–1999 | 0 | - | 4.28 | 45,055 |
| NBA Basketball by Year, 2000–Present | 0 | - | 4.34 | 61,108 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,668 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,443 |
| Inventions by Country #1 | 0 | - | 4.47 | 55,100 |
| Inventions by Country #2 | 0 | - | 4.32 | 38,956 |
| Chinese Inventions | 0 | - | 4.30 | 33,826 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,692 |
| All Modern-Day Countries Ever Controlled by Belgium | 0 | - | 4.51 | 47,900 |
| All Modern-Day Countries Ever Controlled by Germanic People | 0 | - | 4.47 | 29,113 |
| All Modern-Day Countries Ever Controlled by Slavic People | 0 | - | 4.18 | 28,669 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,418 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,930 |
| Geography of the British Empire | 0 | - | 4.48 | 39,749 |
| Medieval English History | 0 | - | 4.53 | 43,582 |
| History of France | 0 | - | 4.61 | 57,317 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,888 |
| 1980s Celebrities by Picture #1 | 0 | - | 3.97 | 61,648 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.14 | 79,571 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,606 |
| Fresh Prince of Bel-Air Lyrics | 0 | - | 4.86 | 589,623 |
| Seinfeld Trivia | 0 | - | 4.57 | 35,196 |
| Main Friends Characters and Actors | 0 | - | 4.42 | 52,264 |
| Friends - Finish the Quote | 0 | - | 4.57 | 44,015 |
| 1970s Movie Trivia | 0 | - | 4.28 | 21,725 |
| Movies by Year, 1950–1969 | 0 | - | 4.48 | 22,078 |
| 2000s Celebrities by Picture #1 | 0 | - | 3.93 | 102,464 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 95,806 |
| Characters from The Office | 0 | - | 4.48 | 46,333 |
| The Office Trivia #1 | 0 | - | 4.43 | 94,916 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,174 |
| Breaking Bad Trivia | 0 | - | 4.45 | 55,272 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,262 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,245 |
| 1930s Celebrities by Picture | 0 | - | 4.33 | 12,640 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,277 |
