| 1960s Decade Quiz #2 | 0 | - | 4.45 | 45,504 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 50,692 |
| Recently Independent Countries | 0 | - | 4.98 | 159,818 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,641 |
| WWII Geography | 0 | - | 4.81 | 120,859 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,464 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,690 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,622 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,822 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,488 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,405 |
| 1970s Decade Quiz | 0 | - | 4.21 | 60,151 |
| 1960s Catchphrases | 0 | - | 4.14 | 105,045 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,405 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,171 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,924 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,757 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,451 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,897 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,056 |
| Countries by Founding Story | 0 | - | 4.95 | 77,682 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 4.01 | 19,653 |
| Independence from Whom | 0 | - | 4.99 | 212,777 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,235 |
| Historical City to Country | 0 | - | 4.85 | 78,894 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,767 |
| Countries by Former Name | 0 | - | 4.99 | 125,674 |
| Cities by Former Name | 0 | - | 4.83 | 91,952 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 41,219 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,642 |
| All Modern-Day Countries Ever Controlled by the British | 0 | - | 4.81 | 50,111 |
| 1960s American TV Trivia | 0 | - | 4.05 | 11,679 |
| Former Flags | 0 | - | 4.97 | 108,373 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,375 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,374 |
| Historic Orient Express Routes Map | 0 | - | 5.00 | 53,733 |
| Former Capitals | 0 | - | 4.88 | 71,631 |
| U.S. History Timeline Quiz | 0 | - | 4.96 | 57,174 |
| Battle to Country | 0 | - | 4.91 | 53,837 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,419 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,663 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,790 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,102 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,157 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,919 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,580 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,692 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 25,194 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,445 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,647 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 54,004 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 44,977 |
| Countries of the World in 1789 with a Map | 0 | - | 4.95 | 67,211 |
| Countries Settled by Vikings | 0 | - | 4.92 | 121,978 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,865 |
| Fads of the 1960s | 0 | - | 4.00 | 11,507 |
| Former Countries | 0 | - | 4.77 | 134,127 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,710 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,781 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,378 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,543 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,200 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,537 |
| Prime Ministers of the UK | 0 | - | 4.95 | 441,688 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,720,613 |
| The Trojan War | 0 | - | 4.83 | 39,945 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,757 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,897 |
| WWII Movies by Plot | 0 | - | 4.21 | 27,144 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,623 |
| WWII Figures by Picture | 0 | - | 4.89 | 66,110 |
| Countries in World War I | 0 | - | 4.88 | 228,945 |
| Territory Changes in World War I | 0 | - | 4.88 | 47,092 |
| Countries by Independence Day | 0 | - | 4.62 | 52,844 |
| Ancient City to Country | 0 | - | 4.70 | 108,284 |
| Former Countries by Capital | 0 | - | 4.45 | 127,750 |
| City-States | 0 | - | 4.53 | 37,376 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,619 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,516 |
| Roman Emperors | 0 | - | 4.95 | 120,982 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,009 |
| Name that Greek Letter | 0 | - | 4.93 | 324,761 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,295 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,550 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,767 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 55,115 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,560 |
| All Modern-Day Countries Ever Controlled by Portugal | 0 | - | 4.93 | 44,449 |
| Name the English Monarchs | 0 | - | 4.91 | 505,674 |
| Rat Pack Members | 0 | - | 4.03 | 5,195 |
| Who Did That 1960s Song #2 | 0 | - | 4.46 | 40,970 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,270 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,854 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,057 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,791 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,154 |
| People Born on Islands | 0 | - | 4.39 | 53,028 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,691 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,239 |
| City Where It Happened #1 | 0 | - | 4.23 | 106,456 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,554 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,107 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,283 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,492 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,779 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,208 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,239 |
| Most Populous Countries in 1950 | 0 | - | 4.63 | 86,257 |
| Roman Provinces on a Map | 0 | - | 4.53 | 37,265 |
| WWI... or WWII? | 0 | - | 4.85 | 143,137 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 86,445 |
| Communist Countries in History | 0 | - | 4.63 | 497,652 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,401 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,931 |
| History of Russia Quiz | 0 | - | 4.47 | 31,990 |
| Famous Immigrants and Exiles | 0 | - | 4.46 | 23,684 |
| History of Italy | 0 | - | 4.55 | 32,118 |
| Guerrillas by Country | 0 | - | 4.40 | 41,206 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 43,241 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,267 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,441 |
| Ancient Greek Words | 0 | - | 4.93 | 112,300 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,839 |
| Inventions by Country #1 | 0 | - | 4.47 | 55,160 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,766 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,619 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 75,077 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,425 |
| All Modern-Day Countries Ever Controlled by Germanic People | 0 | - | 4.47 | 29,165 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 72,050 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.14 | 79,709 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,760 |
| Fresh Prince of Bel-Air Lyrics | 0 | - | 4.86 | 590,020 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,215 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,933 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 95,995 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,168 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,332 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,321 |
| 1960s Music Trivia | 0 | - | 4.36 | 23,757 |
| Who Did That 1960s Song #1 | 0 | - | 4.38 | 47,601 |
| Woodstock Performers | 0 | - | 4.55 | 10,665 |
| #1 Hits of the 1960s | 0 | - | 4.59 | 42,952 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,313 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,602 |
| Geography of the French Empire | 0 | - | 4.45 | 27,201 |
| History of India | 0 | - | 4.62 | 21,494 |
| History of Mexico | 0 | - | 4.52 | 15,358 |
| History of Egypt | 0 | - | 4.58 | 24,090 |
| The Portuguese Empire | 0 | - | 4.58 | 12,096 |
| History of South Africa | 0 | - | 4.60 | 17,745 |
| Russian History A-Z | 0 | - | 4.35 | 32,136 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,617 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,220 |
| History of Iran | 0 | - | 4.66 | 16,409 |
| History of The Netherlands | 0 | - | 4.46 | 17,533 |
| History of Austria | 0 | - | 4.70 | 17,962 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,834 |
| National Founders | 0 | - | 4.40 | 83,942 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,527 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,161 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,249 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,173 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,514 |
| Presidential Middle Names | 0 | - | 4.41 | 60,651 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,590 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,851 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,593 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.30 | 54,982 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,199 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,934 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,505 |
| Countries in World War II | 0 | - | 4.53 | 917,605 |
| Notable People of WWII | 0 | - | 4.53 | 86,145 |
| WWII Trivia #2 | 0 | - | 4.52 | 104,472 |
| WWII Trivia #1 | 0 | - | 4.36 | 178,346 |
| Important Cities in WWII | 0 | - | 4.42 | 93,796 |
| WWII A-Z #1 | 0 | - | 4.73 | 103,281 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,837 |
| WWII Decoder | 0 | - | 4.41 | 53,761 |
| World War II Multiple Choice | 0 | - | 4.38 | 104,437 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 55,699 |
| WWII True or False? | 0 | - | 4.56 | 57,876 |
| 1950s Decade Quiz | 0 | - | 4.41 | 49,698 |
| World War I Quiz | 0 | - | 4.78 | 101,931 |
| WWI A-Z | 0 | - | 4.51 | 38,554 |
| Flags of WW1 | 0 | - | 4.60 | 38,624 |
| Events in U.S. History | 0 | - | 4.41 | 28,792 |
| Political Movements by Country | 0 | - | 4.46 | 72,718 |
| Home Cities in History #1 | 0 | - | 4.04 | 16,599 |
| History of Spain | 0 | - | 4.23 | 21,149 |
| History of China | 0 | - | 4.35 | 57,503 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,549 |
| The Vikings! | 0 | - | 4.46 | 28,397 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,290 |
| The French Revolution | 0 | - | 4.47 | 24,124 |
| People on Money - United States | 0 | - | 4.31 | 63,416 |
| American Founding Fathers | 0 | - | 4.42 | 23,267 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,569 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,184 |
