| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,865 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,443 |
| 1970s Movie Trivia | 0 | - | 4.28 | 21,867 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,863 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,747 |
| Movies by Year, 1950–1969 | 0 | - | 4.48 | 22,143 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,398 |
| Countries by Founding Story | 0 | - | 4.95 | 77,961 |
| Independence from Whom | 0 | - | 4.99 | 213,590 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,787 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,970 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,261 |
| Highest Grossing 1970s Movies | 0 | - | 4.30 | 29,608 |
| 2017 News Stories - Name the Country | 0 | - | 4.46 | 28,655 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,955 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,349 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 51,044 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,329 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,262 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,648 |
| Recently Independent Countries | 0 | - | 4.98 | 160,600 |
| Historical City to Country | 0 | - | 4.85 | 79,130 |
| Countries by Former Name | 0 | - | 4.99 | 126,052 |
| Cities by Former Name | 0 | - | 4.83 | 92,231 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,423 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,399 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 72,244 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.14 | 79,889 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,967 |
| 1960s Music Trivia | 0 | - | 4.36 | 23,809 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,877 |
| Former Capitals | 0 | - | 4.88 | 71,753 |
| Warsaw Pact Countries | 0 | - | 4.83 | 85,029 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,762 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,496 |
| MLB Baseball by Year, 1960–1989 | 0 | - | 4.09 | 18,720 |
| NFL Football by Year, 1967–1999 | 0 | - | 4.34 | 25,514 |
| MLB Baseball by Year, 1990–present | 0 | - | 4.02 | 15,082 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,087 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,656 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,339 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,600 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,967 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,932 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,870 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,905 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 58,039 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 54,415 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,236 |
| 1960s Catchphrases | 0 | - | 4.14 | 105,172 |
| Former Countries | 0 | - | 4.77 | 134,361 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,871 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,662 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,370 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,703 |
| Countries by Independence Day | 0 | - | 4.62 | 52,890 |
| Ancient City to Country | 0 | - | 4.72 | 108,427 |
| Former Countries by Capital | 0 | - | 4.45 | 127,929 |
| City-States | 0 | - | 4.53 | 37,447 |
| Battle to Country | 0 | - | 4.91 | 54,178 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,435 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,355 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,672 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,312 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,134 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,104 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,805 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 46,024 |
| 1930s Celebrities by Picture | 0 | - | 4.33 | 12,773 |
| 1980s Celebrities by Picture #1 | 0 | - | 3.97 | 61,882 |
| Real Madrid 2010s Starting XI | 0 | - | 4.90 | 69,208 |
| 1960s American TV Trivia | 0 | - | 4.05 | 11,690 |
| Sports in Movies | 0 | - | 4.06 | 187,679 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,312 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,985 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,207 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,180 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,777 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,160 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,298 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,877 |
| City Where It Happened #1 | 0 | - | 4.23 | 106,811 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,851 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,733,848 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,983 |
| Guerrillas by Country | 0 | - | 4.40 | 41,265 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,114 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,531 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,475 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 73,150 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,581 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,875 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,091 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.81 | 55,340 |
| Fads of the 1960s | 0 | - | 4.00 | 11,527 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,977 |
| Monty Python Quotes | 0 | - | 4.89 | 42,637 |
| Movie Cities | 0 | - | 4.33 | 51,009 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 58,368 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,860 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,709 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,980 |
| Former Country Flag-Shape Picture Quiz | 0 | - | 4.98 | 90,389 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,888 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 86,865 |
| Countries in World War I | 0 | - | 4.88 | 229,542 |
| Cities in European History #1 | 0 | - | 4.63 | 134,995 |
| 1940s Decade Quiz | 0 | - | 4.51 | 52,521 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,624 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 105,085 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 90,175 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,937 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,795 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,705 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,665 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,697 |
| Rat Pack Members | 0 | - | 4.03 | 5,207 |
| 1990s Movie Trivia #1 | 0 | - | 4.38 | 53,202 |
| 1990s Movie Trivia #2 | 0 | - | 4.40 | 42,021 |
| 1980s Movie Trivia #1 | 0 | - | 4.58 | 31,554 |
| Name the James Bond Movies | 0 | - | 4.56 | 159,701 |
| James Bond Trivia | 0 | - | 4.46 | 39,447 |
| Presidential Actors | 0 | - | 4.36 | 19,271 |
| Biggest British Empire Countries | 0 | - | 4.74 | 100,659 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,422 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,799 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 429,036 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 384,052 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 194,162 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,997 |
| Most Populous Countries in 1950 | 0 | - | 4.63 | 86,618 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 4.01 | 19,677 |
| Countries in World War II | 0 | - | 4.55 | 920,908 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,725 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 162,637 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,764 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,831 |
| Communist Countries in History | 0 | - | 4.63 | 499,018 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,764 |
| Political Movements by Country | 0 | - | 4.46 | 72,857 |
| Home Cities in History #1 | 0 | - | 4.04 | 16,623 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,481 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 127,164 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.89 | 114,689 |
| 20th Century A-Z | 0 | - | 4.50 | 54,086 |
| 1970s Decade Quiz | 0 | - | 4.23 | 61,101 |
| 1980s Decade Quiz | 0 | - | 4.38 | 86,237 |
| 1910s Decade Quiz | 0 | - | 4.21 | 52,933 |
| 1930s Decade Quiz | 0 | - | 4.21 | 49,397 |
| 1920s Decade Quiz | 0 | - | 4.33 | 50,059 |
| Inventions by Country #1 | 0 | - | 4.47 | 55,218 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,696 |
| 1970s Music Trivia | 0 | - | 4.29 | 31,842 |
| 1990s Music Trivia #1 | 0 | - | 4.28 | 51,106 |
| 1990s Music Trivia #2 | 0 | - | 4.06 | 35,890 |
| FC Barcelona 2010s Starting XI | 0 | - | 4.65 | 73,470 |
| Who Did That 1960s Song #1 | 0 | - | 4.38 | 47,844 |
| Who Did That 1960s Song #2 | 0 | - | 4.46 | 41,238 |
| Woodstock Performers | 0 | - | 4.55 | 10,696 |
| #1 Hits of the 1960s | 0 | - | 4.59 | 43,079 |
| 1980s Movie Trivia #2 | 0 | - | 4.28 | 20,854 |
| Sports Movie Quotes Quiz | 0 | - | 4.24 | 20,407 |
| Anchorman Quotes | 0 | - | 3.73 | 9,723 |
| Movies Set in France | 0 | - | 4.26 | 13,166 |
| Movies with Landforms in the Name | 0 | - | 4.16 | 50,587 |
| Cities Founded by the French in North America | 0 | - | 4.50 | 40,523 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,729 |
| Countries Once Held by Sweden | 0 | - | 4.18 | 34,878 |
| National Founders | 0 | - | 4.40 | 84,012 |
| Dave the Dragon's Collection of Country Shapes | 0 | - | 4.46 | 20,799 |
| Important Cities in WWII | 0 | - | 4.42 | 94,322 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 146,186 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,269 |
| Events in U.S. History | 0 | - | 4.41 | 28,870 |
| Home Cities in History Quiz #2 | 0 | - | 3.83 | 16,995 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,343 |
| People on Money - United States | 0 | - | 4.31 | 63,522 |
| American Founding Fathers | 0 | - | 4.42 | 23,311 |
| Old West History | 0 | - | 4.34 | 15,311 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,644 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.09 | 54,808 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,697 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,540 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 20,001 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,227 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,814 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,542 |
| The American Civil War | 0 | - | 4.62 | 52,687 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,591 |
| Countries Settled by the Ancient Greeks | 0 | - | 4.54 | 49,708 |
| Quiz on the Year 1908 | 0 | - | 4.25 | 13,013 |
| NBA Basketball by Year, 1970–1999 | 0 | - | 4.28 | 45,197 |
| NBA Basketball by Year, 2000–Present | 0 | - | 4.34 | 61,512 |
| 1900s Decade Quiz | 0 | - | 4.18 | 44,476 |
| 1990s Decade Quiz | 0 | - | 4.00 | 63,083 |
| Countries that Have Won the Most Battles | 0 | - | 4.01 | 39,834 |
| Inventions by Country #2 | 0 | - | 4.32 | 39,032 |
| Most Populous Countries in 1800 | 0 | - | 4.33 | 42,325 |
| Modern Day Countries of the Portuguese Empire on a Map | 0 | - | 4.56 | 52,327 |
| Modern Day Countries of the Mughal Empire on a Map | 0 | - | 4.43 | 33,931 |
