| 1960s Decade Quiz #2 | 0 | - | 4.44 | 42,920 |
| 1960s Decade Quiz #1 | 0 | - | 4.39 | 48,398 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 150,947 |
| Warsaw Pact Countries | 0 | - | 4.82 | 82,276 |
| WWII Geography | 0 | - | 4.81 | 113,895 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 22,745 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.26 | 67,285 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.24 | 49,045 |
| Highest Grossing 1960s Movies | 0 | - | 4.49 | 21,811 |
| Hollywood Screen Legends Quiz | 0 | - | 4.04 | 34,236 |
| 2019 News Stories - Name the Country | 0 | - | 4.20 | 17,706 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 29,060 |
| 1960s Movie Trivia | 0 | - | 4.35 | 17,254 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 85,136 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 42,875 |
| Countries by Founding Story | 0 | - | 4.94 | 71,924 |
| Independence from Whom | 0 | - | 4.99 | 197,838 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 122,164 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,918 |
| 1970s Decade Quiz | 0 | - | 4.17 | 50,408 |
| 1960s Catchphrases | 0 | - | 4.16 | 98,585 |
| Top 10 Oldest African Countries | 0 | - | 4.85 | 25,084 |
| Countries of the World in 1900 | 0 | - | 4.88 | 74,495 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 181,449 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 138,045 |
| 1950s Decade Quiz | 0 | - | 4.39 | 47,674 |
| Historical City to Country | 0 | - | 4.83 | 75,062 |
| Countries by Former Name | 0 | - | 4.99 | 119,197 |
| Cities by Former Name | 0 | - | 4.85 | 87,241 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.96 | 38,690 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 51,821 |
| All Modern-Day Countries Ever Controlled by the British | 0 | - | 4.83 | 46,355 |
| 1960s American TV Trivia | 0 | - | 4.14 | 11,349 |
| Former Flags | 0 | - | 4.98 | 100,338 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 73,471 |
| States of the German Confederation in 1848 | 0 | - | 4.85 | 29,007 |
| Historic Orient Express Routes Map | 0 | - | 4.99 | 49,970 |
| Former Capitals Quiz | 0 | - | 4.86 | 69,006 |
| 2020 Year in Review - The United States | 0 | - | 3.67 | 13,655 |
| Battle to Country | 0 | - | 4.91 | 48,170 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 92,968 |
| Countries of the World in 1444 | 0 | - | 4.98 | 55,534 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.81 | 52,943 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 64,761 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 141,351 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 69,146 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.94 | 56,302 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 64,528 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 51,223 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.93 | 26,744 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 45,881 |
| Countries of the World in 1882 with a Map | 0 | - | 4.86 | 38,824 |
| Countries Settled by Vikings | 0 | - | 4.93 | 116,335 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.92 | 42,563 |
| Fads of the 1960s | 0 | - | 3.94 | 11,072 |
| Former Countries | 0 | - | 4.74 | 128,874 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.70 | 56,013 |
| Damaged and Destroyed Cities | 0 | - | 4.42 | 43,375 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 99,596 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 108,398 |
| City Where It Happened #2 | 0 | - | 4.44 | 51,875 |
| City Where It Happened #3 | 0 | - | 4.53 | 38,816 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,403,971 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 4.00 | 19,266 |
| WWII Movies | 0 | - | 4.21 | 26,359 |
| Normandy D-Day Beaches | 0 | - | 4.81 | 38,265 |
| WWII Figures by Picture | 0 | - | 4.83 | 45,235 |
| Territory Changes in World War I | 0 | - | 4.88 | 43,007 |
| Countries by Independence Day | 0 | - | 4.56 | 45,330 |
| Ancient City to Country | 0 | - | 4.71 | 104,487 |
| Former Countries by Capital | 0 | - | 4.43 | 107,459 |
| City-States | 0 | - | 4.54 | 36,101 |
| Guerrillas by Country | 0 | - | 4.43 | 39,864 |
| Deadliest U.S. Wars | 0 | - | 4.84 | 165,543 |
| Countries of Iberia in History with a Map | 0 | - | 4.86 | 37,657 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 55,729 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.96 | 80,763 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.84 | 51,143 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.97 | 49,378 |
| English Monarchs Quiz | 0 | - | 4.90 | 472,045 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 32,427 |
| Most Recent Country To ... | 0 | - | 4.32 | 53,751 |
| Invasions of Great Britain | 0 | - | 4.51 | 57,544 |
| Geography of the Dutch Empire | 0 | - | 4.68 | 33,398 |
| Cities by Founder and Date | 0 | - | 4.55 | 28,511 |
| People Born on Islands | 0 | - | 4.35 | 41,263 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 51,044 |
| Cities Where Famous People Died | 0 | - | 4.43 | 32,272 |
| City Where It Happened #1 | 0 | - | 4.28 | 104,558 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.74 | 39,468 |
| Prime Ministers of the UK | 0 | - | 4.95 | 408,077 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 409,014 |
| Olympian Gods Quiz | 0 | - | 4.96 | 469,637 |
| The Trojan War | 0 | - | 4.81 | 37,473 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.86 | 101,451 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 112,812 |
| Roman Provinces on a Map | 0 | - | 4.53 | 34,140 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 218,172 |
| WWI... or WWII? | 0 | - | 4.84 | 131,895 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 79,491 |
| Countries in World War I | 0 | - | 4.88 | 218,585 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 76,009 |
| Countries Unconquered since 1850 | 0 | - | 4.36 | 63,566 |
| Famous Immigrants and Exiles | 0 | - | 4.54 | 20,059 |
| Ancient Roman Trivia #1 | 0 | - | 4.83 | 74,521 |
| Roman Emperors | 0 | - | 4.96 | 108,274 |
| Ancient Rome - True or False? | 0 | - | 4.84 | 40,258 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 610,801 |
| Name that Greek Letter | 0 | - | 4.94 | 309,093 |
| Ancient Greek Words | 0 | - | 4.92 | 104,426 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.75 | 42,488 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 54,471 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 55,435 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 48,529 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 46,058 |
| 1960s Music Trivia | 0 | - | 4.36 | 22,761 |
| Who Did That 1960s Song #1 | 0 | - | 4.35 | 45,460 |
| Who Did That 1960s Song #2 | 0 | - | 4.46 | 38,600 |
| Woodstock Performers | 0 | - | 4.54 | 10,307 |
| #1 Hits of the 1960s | 0 | - | 4.59 | 40,936 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.19 | 14,967 |
| Geography of the French Empire | 0 | - | 4.51 | 26,091 |
| History of India | 0 | - | 4.60 | 20,402 |
| History of Mexico | 0 | - | 4.57 | 14,651 |
| The Portuguese Empire | 0 | - | 4.54 | 11,652 |
| History of South Africa | 0 | - | 4.59 | 17,087 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.63 | 53,616 |
| History of Ireland Quiz | 0 | - | 4.44 | 20,115 |
| History of Iran Quiz | 0 | - | 4.63 | 15,633 |
| History of The Netherlands | 0 | - | 4.44 | 16,458 |
| History of Austria | 0 | - | 4.69 | 17,045 |
| Canadian Prime Ministers Quiz | 0 | - | 4.63 | 53,424 |
| National Founders | 0 | - | 4.40 | 81,953 |
| Country by Photo of its Leader | 0 | - | 4.79 | 119,588 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 367,575 |
| Name a Valid U.S. President #1 | 0 | - | 4.91 | 178,551 |
| Play-Doh Presidents | 0 | - | 5.00 | 78,420 |
| Figures from Greek Mythology | 0 | - | 4.90 | 174,918 |
| Most Populous Countries in 1950 | 0 | - | 4.53 | 72,738 |
| Countries in World War II | 0 | - | 4.55 | 859,341 |
| Notable People of WWII | 0 | - | 4.53 | 83,117 |
| WWII Trivia #2 | 0 | - | 4.51 | 99,215 |
| World War I Quiz | 0 | - | 4.78 | 96,227 |
| WWI A-Z | 0 | - | 4.49 | 36,739 |
| Communist Countries in History | 0 | - | 4.62 | 474,120 |
| Political Movements by Country | 0 | - | 4.46 | 70,388 |
| Home Cities in History Quiz #1 | 0 | - | 4.17 | 16,237 |
| History of Russia Quiz | 0 | - | 4.48 | 30,961 |
| History of Italy | 0 | - | 4.50 | 30,900 |
| History of China | 0 | - | 4.38 | 53,704 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 22,708 |
| The Vikings! | 0 | - | 4.46 | 27,711 |
| The French Revolution | 0 | - | 4.45 | 22,702 |
| The Most Recent... United States | 0 | - | 4.47 | 17,059 |
| Byzantine History | 0 | - | 4.87 | 27,392 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 415,704 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 52,222 |
| Ancient Greek Trivia | 0 | - | 4.55 | 65,043 |
| NFL Football by Year, 2000–present | 0 | - | 4.19 | 23,947 |
| 2017 News Stories - Name the Country | 0 | - | 4.46 | 27,646 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,051 |
| Movies by Year, 1990–2009 | 0 | - | 4.20 | 64,799 |
| Movies by Year, 1970–1989 | 0 | - | 4.36 | 24,661 |
| NBA Basketball by Year, 1970–1999 | 0 | - | 4.22 | 43,578 |
| NBA Basketball by Year, 2000–Present | 0 | - | 4.28 | 56,645 |
| Countries that Have Won the Most Battles | 0 | - | 4.04 | 37,858 |
| Countries Italy Declared War On | 0 | - | 4.75 | 41,561 |
| Ottoman Empire Quiz | 0 | - | 4.43 | 16,345 |
| Inventions by Country #1 | 0 | - | 4.45 | 53,914 |
| Inventions by Country #2 | 0 | - | 4.38 | 37,952 |
| Chinese Inventions | 0 | - | 4.29 | 33,131 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.74 | 30,355 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 65,370 |
| All Modern-Day Countries Ever Controlled by Belgium | 0 | - | 4.49 | 44,518 |
| All Modern-Day Countries Ever Controlled by Germanic People | 0 | - | 4.53 | 27,640 |
| All Modern-Day Countries Ever Controlled by Slavic People | 0 | - | 4.15 | 27,076 |
| Wives of King Henry VIII | 0 | - | 4.54 | 52,334 |
| Countries the UK Declared War On | 0 | - | 4.56 | 117,052 |
| Geography of the British Empire | 0 | - | 4.51 | 38,271 |
| Medieval English History | 0 | - | 4.53 | 42,113 |
| History of France Quiz | 0 | - | 4.56 | 41,449 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.18 | 68,193 |
| 1980s Celebrities by Picture #1 | 0 | - | 4.02 | 58,879 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 75,950 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.12 | 68,507 |
| Fresh Prince of Bel-Air Lyrics | 0 | - | 4.82 | 580,966 |
| Main Friends Characters and Actors | 0 | - | 4.41 | 49,689 |
| Friends - Finish the Quote | 0 | - | 4.49 | 38,109 |
| 1970s Movie Trivia | 0 | - | 4.28 | 20,380 |
| Movies by Year, 1950–1969 | 0 | - | 4.48 | 21,366 |
| 2000s Celebrities by Picture #1 | 0 | - | 3.92 | 97,852 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.17 | 89,632 |
| Characters from The Office | 0 | - | 4.46 | 43,301 |
| The Office Trivia #1 | 0 | - | 4.45 | 83,018 |
| Real Madrid 2010's Starting XI | 0 | - | 4.85 | 59,092 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 49,285 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 44,392 |
| 1930s Celebrities by Picture | 0 | - | 4.30 | 11,463 |
| Rat Pack Members | 0 | - | 4.00 | 4,999 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.70 | 11,228 |
