| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,892 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 50,025 |
| Recently Independent Countries | 0 | - | 4.98 | 159,050 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,458 |
| WWII Geography | 0 | - | 4.81 | 120,167 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,387 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,347 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,378 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,735 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,415 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,262 |
| 1970s Decade Quiz | 0 | - | 4.20 | 52,864 |
| 1960s Catchphrases | 0 | - | 4.14 | 104,725 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,322 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,901 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,013 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,635 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,823 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,462 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,615 |
| Countries by Founding Story | 0 | - | 4.95 | 77,092 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 4.01 | 19,596 |
| Independence from Whom | 0 | - | 4.99 | 211,377 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,752 |
| Historical City to Country | 0 | - | 4.84 | 78,448 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,398 |
| Countries by Former Name | 0 | - | 4.99 | 124,943 |
| Cities by Former Name | 0 | - | 4.83 | 91,458 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,960 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,260 |
| 1960s American TV Trivia | 0 | - | 4.05 | 11,654 |
| Former Flags | 0 | - | 4.97 | 107,529 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,692 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,905 |
| Historic Orient Express Routes Map | 0 | - | 4.99 | 53,419 |
| Former Capitals | 0 | - | 4.88 | 71,396 |
| Battle to Country | 0 | - | 4.91 | 53,188 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,525 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,127 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,320 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,644 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,951 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 77,597 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,349 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,759 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,836 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,660 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,476 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 53,157 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 44,290 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,303 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,572 |
| Fads of the 1960s | 0 | - | 4.00 | 11,463 |
| Former Countries | 0 | - | 4.75 | 133,685 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,418 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,629 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,657 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,297 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,090 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,390 |
| Prime Ministers of the UK | 0 | - | 4.95 | 438,077 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,690,256 |
| The Trojan War | 0 | - | 4.83 | 39,664 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,604 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,760 |
| WWII Movies by Plot | 0 | - | 4.21 | 27,066 |
| Normandy D-Day Beaches | 0 | - | 4.83 | 40,382 |
| WWII Figures by Picture | 0 | - | 4.89 | 65,228 |
| Countries in World War I | 0 | - | 4.88 | 227,883 |
| Territory Changes in World War I | 0 | - | 4.87 | 46,678 |
| Countries by Independence Day | 0 | - | 4.61 | 52,717 |
| Ancient City to Country | 0 | - | 4.70 | 107,952 |
| Former Countries by Capital | 0 | - | 4.45 | 127,381 |
| City-States | 0 | - | 4.53 | 37,232 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,579 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,440 |
| Roman Emperors | 0 | - | 4.95 | 119,717 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,390 |
| Name that Greek Letter | 0 | - | 4.93 | 323,172 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,590 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,965 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,133 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,706 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,970 |
| Name the English Monarchs | 0 | - | 4.91 | 501,751 |
| Rat Pack Members | 0 | - | 4.03 | 5,178 |
| Who Did That 1960s Song #2 | 0 | - | 4.46 | 40,834 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,179 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,631 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,807 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,631 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,093 |
| People Born on Islands | 0 | - | 4.39 | 52,889 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,364 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,127 |
| City Where It Happened #1 | 0 | - | 4.23 | 106,297 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,122 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,037 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,197 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,441 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,176 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,798 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,614 |
| Most Populous Countries in 1950 | 0 | - | 4.63 | 85,990 |
| Roman Provinces on a Map | 0 | - | 4.54 | 36,871 |
| WWI... or WWII? | 0 | - | 4.85 | 141,958 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 85,712 |
| Communist Countries in History | 0 | - | 4.63 | 495,063 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,180 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,793 |
| History of Russia Quiz | 0 | - | 4.49 | 31,887 |
| Famous Immigrants and Exiles | 0 | - | 4.45 | 23,342 |
| History of Italy | 0 | - | 4.55 | 31,945 |
| Guerrillas by Country | 0 | - | 4.40 | 41,086 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 42,858 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,473 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,026 |
| Ancient Greek Words | 0 | - | 4.93 | 111,407 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,660 |
| Inventions by Country #1 | 0 | - | 4.47 | 55,005 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.75 | 45,455 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.77 | 33,313 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,749 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,962 |
| All Modern-Day Countries Ever Controlled by Germanic People | 0 | - | 4.47 | 29,004 |
| All Modern-Day Countries Ever Controlled by the British | 0 | - | 4.80 | 49,742 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,627 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 79,321 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,308 |
| Fresh Prince of Bel-Air Lyrics | 0 | - | 4.86 | 588,920 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,894 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,625 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 95,205 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,964 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,133 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,116 |
| 1960s Music Trivia | 0 | - | 4.36 | 23,658 |
| Who Did That 1960s Song #1 | 0 | - | 4.38 | 47,452 |
| Woodstock Performers | 0 | - | 4.55 | 10,635 |
| #1 Hits of the 1960s | 0 | - | 4.59 | 42,771 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,192 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,550 |
| Geography of the French Empire | 0 | - | 4.45 | 27,034 |
| History of India | 0 | - | 4.62 | 21,404 |
| History of Mexico | 0 | - | 4.58 | 15,292 |
| History of Egypt | 0 | - | 4.58 | 24,011 |
| The Portuguese Empire | 0 | - | 4.58 | 12,053 |
| History of South Africa | 0 | - | 4.60 | 17,664 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,400 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,123 |
| History of Iran | 0 | - | 4.66 | 16,343 |
| History of The Netherlands | 0 | - | 4.46 | 17,416 |
| History of Austria | 0 | - | 4.70 | 17,841 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,449 |
| National Founders | 0 | - | 4.40 | 83,800 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,901 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,856 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,571 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,301 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,641 |
| Presidential Middle Names | 0 | - | 4.41 | 60,135 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,215 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,477 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,370 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,513 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,538 |
| Countries in World War II | 0 | - | 4.54 | 911,231 |
| Notable People of WWII | 0 | - | 4.53 | 85,857 |
| WWII Trivia #2 | 0 | - | 4.52 | 103,888 |
| WWII Trivia #1 | 0 | - | 4.36 | 177,494 |
| Important Cities in WWII | 0 | - | 4.42 | 93,381 |
| WWII A-Z #1 | 0 | - | 4.78 | 102,876 |
| WWII A-Z #2 | 0 | - | 4.44 | 54,614 |
| WWII Decoder | 0 | - | 4.41 | 53,490 |
| World War II Multiple Choice | 0 | - | 4.38 | 103,674 |
| Name a Valid Answer - World War II | 0 | - | 4.53 | 55,325 |
| WWII True or False? | 0 | - | 4.56 | 57,452 |
| 1950s Decade Quiz | 0 | - | 4.41 | 49,198 |
| World War I Quiz | 0 | - | 4.78 | 101,164 |
| WWI A-Z | 0 | - | 4.50 | 38,285 |
| Flags of WW1 | 0 | - | 4.60 | 38,306 |
| Political Movements by Country | 0 | - | 4.46 | 72,474 |
| Home Cities in History #1 | 0 | - | 4.04 | 16,560 |
| History of Spain | 0 | - | 4.23 | 21,071 |
| History of China | 0 | - | 4.37 | 57,082 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,464 |
| The Vikings! | 0 | - | 4.46 | 28,324 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,132 |
| The French Revolution | 0 | - | 4.46 | 23,913 |
| People on Money - United States | 0 | - | 4.31 | 63,326 |
| American Founding Fathers | 0 | - | 4.42 | 23,205 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,418 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,005 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,096 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,710 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,957 |
| The Most Recent... United States | 0 | - | 4.45 | 18,417 |
| The American Civil War | 0 | - | 4.62 | 52,383 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,705 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,868 |
