| 1960s Decade Quiz #1 | 0 | - | 4.40 | 50,408 |
| Recently Independent Countries | 0 | - | 4.98 | 159,604 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,591 |
| WWII Geography | 0 | - | 4.81 | 120,685 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,439 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,615 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,562 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,798 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,462 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,365 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,376 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,623 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,930 |
| Countries by Founding Story | 0 | - | 4.95 | 77,461 |
| 1950s Decade Quiz | 0 | - | 4.41 | 49,449 |
| Independence from Whom | 0 | - | 4.99 | 212,352 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,926 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,665 |
| 1970s Decade Quiz | 0 | - | 4.20 | 53,441 |
| 1960s Catchphrases | 0 | - | 4.14 | 104,971 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,105 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,433 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,038 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,551 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 4.01 | 19,636 |
| Historical City to Country | 0 | - | 4.84 | 78,708 |
| Countries by Former Name | 0 | - | 4.99 | 125,475 |
| Cities by Former Name | 0 | - | 4.83 | 91,814 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 41,165 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,527 |
| 1960s American TV Trivia | 0 | - | 4.05 | 11,677 |
| Former Flags | 0 | - | 4.97 | 108,125 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,170 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,270 |
| Historic Orient Express Routes Map | 0 | - | 5.00 | 53,638 |
| Former Capitals | 0 | - | 4.88 | 71,563 |
| Battle to Country | 0 | - | 4.91 | 53,647 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,178 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,519 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,661 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,002 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,904 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,090 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,288 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,471 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 25,106 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,268 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,612 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 53,769 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 44,827 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,846 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,797 |
| Fads of the 1960s | 0 | - | 4.00 | 11,498 |
| Former Countries | 0 | - | 4.77 | 134,003 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,648 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,737 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,198 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,214 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,171 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,509 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,713,517 |
| WWII Movies by Plot | 0 | - | 4.21 | 27,127 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,546 |
| WWII Figures by Picture | 0 | - | 4.89 | 65,924 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,978 |
| Countries by Independence Day | 0 | - | 4.62 | 52,805 |
| Ancient City to Country | 0 | - | 4.70 | 108,194 |
| Former Countries by Capital | 0 | - | 4.45 | 127,662 |
| City-States | 0 | - | 4.53 | 37,332 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,391 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,165 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,396 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,614 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 55,014 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,424 |
| Name the English Monarchs | 0 | - | 4.91 | 504,667 |
| Rat Pack Members | 0 | - | 4.03 | 5,192 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,234 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,794 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,001 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,754 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,137 |
| People Born on Islands | 0 | - | 4.39 | 52,992 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,603 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,208 |
| City Where It Happened #1 | 0 | - | 4.23 | 106,419 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,451 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,760 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,529 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,406 |
| The Trojan War | 0 | - | 4.83 | 39,881 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,473 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,818 |
| Roman Provinces on a Map | 0 | - | 4.53 | 37,149 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,578 |
| WWI... or WWII? | 0 | - | 4.85 | 142,816 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 86,256 |
| Countries in World War I | 0 | - | 4.88 | 228,635 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,339 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,901 |
| History of Russia Quiz | 0 | - | 4.47 | 31,974 |
| Famous Immigrants and Exiles | 0 | - | 4.46 | 23,606 |
| History of Italy | 0 | - | 4.55 | 32,090 |
| Guerrillas by Country | 0 | - | 4.40 | 41,180 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,286 |
| Roman Emperors | 0 | - | 4.95 | 120,641 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 43,163 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,846 |
| Name that Greek Letter | 0 | - | 4.93 | 324,419 |
| Ancient Greek Words | 0 | - | 4.93 | 112,083 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,681 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,532 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,310 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,102 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,817 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,128 |
| 1960s Music Trivia | 0 | - | 4.36 | 23,722 |
| Who Did That 1960s Song #1 | 0 | - | 4.38 | 47,545 |
| Who Did That 1960s Song #2 | 0 | - | 4.46 | 40,921 |
| Woodstock Performers | 0 | - | 4.55 | 10,656 |
| #1 Hits of the 1960s | 0 | - | 4.59 | 42,897 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,590 |
| Geography of the French Empire | 0 | - | 4.45 | 27,178 |
| History of India | 0 | - | 4.62 | 21,473 |
| History of Mexico | 0 | - | 4.58 | 15,341 |
| The Portuguese Empire | 0 | - | 4.58 | 12,088 |
| History of South Africa | 0 | - | 4.60 | 17,728 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,556 |
| History of Iran | 0 | - | 4.66 | 16,390 |
| History of The Netherlands | 0 | - | 4.46 | 17,503 |
| History of Austria | 0 | - | 4.70 | 17,928 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,743 |
| National Founders | 0 | - | 4.40 | 83,908 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,372 |
| Prime Ministers of Australia | 0 | - | 4.50 | 32,098 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,772 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,998 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,634 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,879 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,047 |
| Most Populous Countries in 1950 | 0 | - | 4.63 | 86,184 |
| Countries in World War II | 0 | - | 4.54 | 915,925 |
| Notable People of WWII | 0 | - | 4.53 | 86,064 |
| WWII Trivia #2 | 0 | - | 4.52 | 104,370 |
| World War I Quiz | 0 | - | 4.78 | 101,527 |
| WWI A-Z | 0 | - | 4.51 | 38,478 |
| Communist Countries in History | 0 | - | 4.63 | 497,003 |
| Political Movements by Country | 0 | - | 4.46 | 72,658 |
| Home Cities in History #1 | 0 | - | 4.04 | 16,589 |
| History of China | 0 | - | 4.37 | 57,410 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,525 |
| The Vikings! | 0 | - | 4.46 | 28,381 |
| The French Revolution | 0 | - | 4.47 | 24,085 |
| The Most Recent... United States | 0 | - | 4.46 | 18,520 |
| Byzantine History | 0 | - | 4.91 | 28,956 |
| Byzantine Emperors | 0 | - | 4.92 | 14,438 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,514 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,346 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,134 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,979 |
| NFL Football by Year, 2000–present | 0 | - | 4.26 | 28,145 |
| 2017 News Stories - Name the Country | 0 | - | 4.46 | 28,565 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,888 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,803 |
| Movies by Year, 1970–1989 | 0 | - | 4.38 | 25,445 |
| NBA Basketball by Year, 1970–1999 | 0 | - | 4.28 | 45,072 |
| NBA Basketball by Year, 2000–Present | 0 | - | 4.34 | 61,147 |
| Countries that Have Won the Most Battles | 0 | - | 4.01 | 39,685 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,496 |
| Inventions by Country #1 | 0 | - | 4.47 | 55,119 |
| Inventions by Country #2 | 0 | - | 4.32 | 38,964 |
| Chinese Inventions | 0 | - | 4.30 | 33,833 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,790 |
| All Modern-Day Countries Ever Controlled by Belgium | 0 | - | 4.51 | 47,941 |
| All Modern-Day Countries Ever Controlled by Germanic People | 0 | - | 4.47 | 29,128 |
| All Modern-Day Countries Ever Controlled by Slavic People | 0 | - | 4.19 | 28,679 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,426 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,002 |
| Geography of the British Empire | 0 | - | 4.48 | 39,787 |
| Medieval English History | 0 | - | 4.53 | 43,601 |
| History of France | 0 | - | 4.61 | 57,375 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,931 |
| 1980s Celebrities by Picture #1 | 0 | - | 3.97 | 61,677 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.14 | 79,613 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,655 |
| Fresh Prince of Bel-Air Lyrics | 0 | - | 4.86 | 589,722 |
| Seinfeld Trivia | 0 | - | 4.57 | 35,204 |
| Main Friends Characters and Actors | 0 | - | 4.42 | 52,281 |
| Friends - Finish the Quote | 0 | - | 4.57 | 44,056 |
| 1970s Movie Trivia | 0 | - | 4.28 | 21,733 |
| Movies by Year, 1950–1969 | 0 | - | 4.48 | 22,088 |
| 2000s Celebrities by Picture #1 | 0 | - | 3.93 | 102,508 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 95,856 |
| Characters from The Office | 0 | - | 4.48 | 46,373 |
| The Office Trivia #1 | 0 | - | 4.43 | 95,093 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 68,296 |
| Breaking Bad Trivia | 0 | - | 4.45 | 55,314 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,289 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,267 |
| 1930s Celebrities by Picture | 0 | - | 4.33 | 12,659 |
