| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,488 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 49,711 |
| Recently Independent Countries | 0 | - | 4.98 | 157,946 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,263 |
| WWII Geography | 0 | - | 4.81 | 119,312 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,306 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 69,997 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,112 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,597 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,323 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,132 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,115 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,850 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,127 |
| Countries by Founding Story | 0 | - | 4.95 | 76,499 |
| Independence from Whom | 0 | - | 4.99 | 209,609 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,690 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,980 |
| 1970s Decade Quiz | 0 | - | 4.20 | 52,335 |
| 1960s Catchphrases | 0 | - | 4.16 | 104,160 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,430 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,442 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,071 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,774 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 4.01 | 19,541 |
| 1950s Decade Quiz | 0 | - | 4.40 | 48,912 |
| Historical City to Country | 0 | - | 4.84 | 78,114 |
| Countries by Former Name | 0 | - | 4.99 | 124,246 |
| Cities by Former Name | 0 | - | 4.84 | 90,937 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.95 | 40,677 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 54,839 |
| 1960s American TV Trivia | 0 | - | 4.05 | 11,608 |
| Former Flags | 0 | - | 4.97 | 106,635 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 77,995 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,509 |
| Historic Orient Express Routes Map | 0 | - | 5.00 | 52,936 |
| Former Capitals | 0 | - | 4.88 | 71,128 |
| Battle to Country | 0 | - | 4.91 | 52,492 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,680 |
| Countries of the World in 1444 | 0 | - | 4.98 | 59,485 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,847 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.99 | 68,172 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,879 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,378 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,338 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,064 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,451 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,975 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,266 |
| Countries of Europe before World War II with a Map | 0 | - | 4.94 | 52,257 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 43,603 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,820 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,259 |
| Fads of the 1960s | 0 | - | 4.00 | 11,427 |
| Former Countries | 0 | - | 4.75 | 132,666 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,125 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,475 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,828 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,203 |
| City Where It Happened #2 | 0 | - | 4.42 | 52,956 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,221 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,652,539 |
| WWII Movies by Plot | 0 | - | 4.21 | 26,963 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,099 |
| WWII Figures by Picture | 0 | - | 4.85 | 50,492 |
| Territory Changes in World War I | 0 | - | 4.86 | 46,209 |
| Countries by Independence Day | 0 | - | 4.56 | 52,596 |
| Ancient City to Country | 0 | - | 4.70 | 107,593 |
| Former Countries by Capital | 0 | - | 4.45 | 127,027 |
| City-States | 0 | - | 4.53 | 37,088 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,212 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,116 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,337 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,459 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,252 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,428 |
| Name the English Monarchs | 0 | - | 4.92 | 497,738 |
| Rat Pack Members | 0 | - | 4.03 | 5,160 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,093 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,390 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,376 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,476 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,006 |
| People Born on Islands | 0 | - | 4.39 | 52,740 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,926 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,009 |
| City Where It Happened #1 | 0 | - | 4.24 | 106,120 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 42,673 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,466 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,572 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,752 |
| The Trojan War | 0 | - | 4.83 | 39,419 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,489 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,201 |
| Roman Provinces on a Map | 0 | - | 4.54 | 36,542 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,358 |
| WWI... or WWII? | 0 | - | 4.85 | 140,572 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 84,760 |
| Countries in World War I | 0 | - | 4.88 | 226,555 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,974 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,638 |
| History of Russia Quiz | 0 | - | 4.49 | 31,784 |
| Famous Immigrants and Exiles | 0 | - | 4.48 | 20,433 |
| History of Italy | 0 | - | 4.55 | 31,809 |
| Guerrillas by Country | 0 | - | 4.40 | 40,943 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,027 |
| Roman Emperors | 0 | - | 4.95 | 118,414 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 42,603 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,676 |
| Name that Greek Letter | 0 | - | 4.94 | 321,585 |
| Ancient Greek Words | 0 | - | 4.92 | 110,637 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.74 | 45,127 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.77 | 32,924 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,497 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,606 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,393 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,758 |
| 1960s Music Trivia | 0 | - | 4.36 | 23,551 |
| Who Did That 1960s Song #1 | 0 | - | 4.38 | 47,309 |
| Who Did That 1960s Song #2 | 0 | - | 4.46 | 40,672 |
| Woodstock Performers | 0 | - | 4.55 | 10,600 |
| #1 Hits of the 1960s | 0 | - | 4.59 | 42,600 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,489 |
| Geography of the French Empire | 0 | - | 4.48 | 26,923 |
| History of India | 0 | - | 4.61 | 21,276 |
| History of Mexico | 0 | - | 4.58 | 15,227 |
| The Portuguese Empire | 0 | - | 4.54 | 11,987 |
| History of South Africa | 0 | - | 4.60 | 17,599 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,156 |
| History of Iran | 0 | - | 4.65 | 16,264 |
| History of The Netherlands | 0 | - | 4.46 | 17,305 |
| History of Austria | 0 | - | 4.70 | 17,743 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,024 |
| National Founders | 0 | - | 4.40 | 83,643 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,219 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,665 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,494 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,769 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,653 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,857 |
| Most Populous Countries in 1950 | 0 | - | 4.63 | 85,708 |
| Countries in World War II | 0 | - | 4.53 | 904,153 |
| Notable People of WWII | 0 | - | 4.53 | 85,309 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,405 |
| World War I Quiz | 0 | - | 4.78 | 100,225 |
| WWI A-Z | 0 | - | 4.50 | 38,010 |
| Communist Countries in History | 0 | - | 4.63 | 492,372 |
| Political Movements by Country | 0 | - | 4.46 | 72,251 |
| Home Cities in History #1 | 0 | - | 4.04 | 16,522 |
| History of China | 0 | - | 4.37 | 56,677 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,381 |
| The Vikings! | 0 | - | 4.45 | 28,242 |
| The French Revolution | 0 | - | 4.46 | 23,773 |
| The Most Recent... United States | 0 | - | 4.45 | 18,277 |
| Byzantine History | 0 | - | 4.91 | 28,608 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,401 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,599 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,761 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,765 |
| NFL Football by Year, 2000–present | 0 | - | 4.26 | 27,858 |
| 2017 News Stories - Name the Country | 0 | - | 4.46 | 28,387 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,743 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,491 |
| Movies by Year, 1970–1989 | 0 | - | 4.38 | 25,355 |
| NBA Basketball by Year, 1970–1999 | 0 | - | 4.28 | 44,767 |
| NBA Basketball by Year, 2000–Present | 0 | - | 4.33 | 60,205 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,355 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,931 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 17,021 |
| Inventions by Country #1 | 0 | - | 4.46 | 54,881 |
| Inventions by Country #2 | 0 | - | 4.34 | 38,804 |
| Chinese Inventions | 0 | - | 4.30 | 33,717 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,415 |
| All Modern-Day Countries Ever Controlled by Germanic People | 0 | - | 4.47 | 28,832 |
| All Modern-Day Countries Ever Controlled by Slavic People | 0 | - | 4.16 | 28,374 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,166 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,749 |
| Geography of the British Empire | 0 | - | 4.48 | 39,467 |
| Medieval English History | 0 | - | 4.53 | 43,307 |
| History of France | 0 | - | 4.59 | 55,978 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,229 |
| 1980s Celebrities by Picture #1 | 0 | - | 3.97 | 61,189 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 78,973 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 71,917 |
| Fresh Prince of Bel-Air Lyrics | 0 | - | 4.85 | 587,727 |
| Seinfeld Trivia | 0 | - | 4.57 | 34,815 |
| Main Friends Characters and Actors | 0 | - | 4.42 | 51,897 |
| Friends - Finish the Quote | 0 | - | 4.57 | 43,032 |
| 1970s Movie Trivia | 0 | - | 4.28 | 21,432 |
| Movies by Year, 1950–1969 | 0 | - | 4.48 | 22,002 |
| 2000s Celebrities by Picture #1 | 0 | - | 3.93 | 101,668 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 94,547 |
| Characters from The Office | 0 | - | 4.48 | 45,899 |
| The Office Trivia #1 | 0 | - | 4.43 | 93,898 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,096 |
| Breaking Bad Trivia | 0 | - | 4.44 | 54,627 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 50,914 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 45,911 |
| 1930s Celebrities by Picture | 0 | - | 4.33 | 12,316 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,088 |
