| Who Did That 1970s Song #1 | 0 | - | 4.48 | 89,207 |
| Who Did That 1970s Song #2 | 0 | - | 4.25 | 53,930 |
| I Will Survive Lyrics | 0 | - | 4.25 | 37,770 |
| #1 Hits of the 1970s | 0 | - | 4.44 | 85,469 |
| 1970s Albums | 0 | - | 4.38 | 27,801 |
| Who Did That 1960s Song #2 | 0 | - | 4.46 | 41,212 |
| 1970s Music Trivia | 0 | - | 4.29 | 31,825 |
| Who Did That 1960s Song #1 | 0 | - | 4.38 | 47,828 |
| Woodstock Performers | 0 | - | 4.55 | 10,685 |
| Movies by Year, 1950–1969 | 0 | - | 4.48 | 22,136 |
| #1 Hits of the 1960s | 0 | - | 4.59 | 43,063 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,325 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 51,017 |
| 1970s Decade Quiz | 0 | - | 4.23 | 61,039 |
| Fads of the 1970s | 0 | - | 4.19 | 28,452 |
| 1970s Celebrities | 0 | - | 4.03 | 13,795 |
| People Portrayed by Andy Warhol | 0 | - | 4.35 | 38,288 |
| 1970s American TV Trivia | 0 | - | 4.12 | 12,501 |
| 1980s Albums | 0 | - | 4.41 | 46,761 |
| Who Did That 1980s Song #3 | 0 | - | 4.58 | 54,986 |
| Highest Grossing 1980s Movies | 0 | - | 4.47 | 65,856 |
| Highest Grossing 1990s Movies | 0 | - | 4.50 | 109,041 |
| 1970s Movie Trivia | 0 | - | 4.28 | 21,854 |
| Highest Grossing 1970s Movies | 0 | - | 4.30 | 29,599 |
| 1960s Music Trivia | 0 | - | 4.36 | 23,806 |
| 1960s Catchphrases | 0 | - | 4.14 | 105,151 |
| Who Did That 1980s Song #2 | 0 | - | 4.31 | 75,852 |
| Who Did That 1980s Song #1 | 0 | - | 4.37 | 171,003 |
| #1 Hits of the 1980s | 0 | - | 4.87 | 149,634 |
| Africa - Toto Lyrics | 0 | - | 4.58 | 7,359 |
| Who Did That 1990s Song #2 | 0 | - | 4.28 | 61,376 |
| Who Did That 1990s Song #1 | 0 | - | 4.17 | 76,508 |
| Who Did That 1990s Song #3 | 0 | - | 4.08 | 56,240 |
| Top Box Office Stars of the 1990s | 0 | - | 4.30 | 31,792 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,913 |
| 1960s American TV Trivia | 0 | - | 4.05 | 11,689 |
| "We Are the World" Solo Musicians | 0 | - | 4.17 | 11,440 |
| 1980s Movies by Plot | 0 | - | 4.25 | 29,112 |
| 1990s One Hit Wonders | 0 | - | 4.00 | 38,029 |
| 1990s Movies by Plot | 0 | - | 4.13 | 27,872 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,285 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,225 |
| Countries by Founding Story | 0 | - | 4.95 | 77,912 |
| Independence from Whom | 0 | - | 4.99 | 213,417 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,671 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,925 |
| 2017 News Stories - Name the Country | 0 | - | 4.46 | 28,640 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,945 |
| 1980s Movie Trivia #1 | 0 | - | 4.58 | 31,544 |
| Who Did That Power Ballad? | 0 | - | 3.86 | 38,219 |
| Hair Band Songs Quiz | 0 | - | 4.22 | 28,971 |
| Brat Pack Actors | 0 | - | 4.32 | 7,172 |
| 1990s Movie Trivia #1 | 0 | - | 4.38 | 53,181 |
| 1990s Movie Trivia #2 | 0 | - | 4.40 | 42,007 |
| Ice Ice Baby Lyrics | 0 | - | 3.48 | 36,403 |
| 1990s Albums | 0 | - | 4.23 | 25,696 |
| Girls of Mambo Number 5 | 0 | - | 4.38 | 19,556 |
| Things that Alanis Morissette Finds "Ironic" | 0 | - | 4.26 | 22,358 |
| 2000s Movie Trivia #1 | 0 | - | 4.36 | 73,465 |
| 2010s Movie Trivia | 0 | - | 4.33 | 51,269 |
| Top 10 Oldest African Countries | 0 | - | 4.87 | 28,302 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,174 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,090 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,481 |
| Recently Independent Countries | 0 | - | 4.98 | 160,517 |
| Historical City to Country | 0 | - | 4.85 | 79,102 |
| Countries by Former Name | 0 | - | 4.99 | 125,979 |
| Cities by Former Name | 0 | - | 4.83 | 92,181 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,491 |
| Movies by Year, 1970–1989 | 0 | - | 4.38 | 25,483 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 41,312 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,801 |
| All Modern-Day Countries Ever Controlled by the British | 0 | - | 4.81 | 50,276 |
| Fads of the 1960s | 0 | - | 4.00 | 11,524 |
| Rat Pack Members | 0 | - | 4.03 | 5,201 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,851 |
| Fads of the 1980s | 0 | - | 4.06 | 36,963 |
| 1980s One Hit Wonders | 0 | - | 3.89 | 26,494 |
| Don't Stop Believin' Lyrics | 0 | - | 4.47 | 224,775 |
| Back to the Future Trivia | 0 | - | 4.59 | 34,718 |
| Fads of the 1990s | 0 | - | 4.03 | 36,662 |
| Former Flags | 0 | - | 4.97 | 108,824 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,604 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,509 |
| Historic Orient Express Routes Map | 0 | - | 5.00 | 53,910 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,725 |
| U.S. History Timeline Quiz | 0 | - | 4.96 | 57,340 |
| MLB Baseball by Year, 1960–1989 | 0 | - | 4.09 | 18,718 |
| NFL Football by Year, 1967–1999 | 0 | - | 4.34 | 25,512 |
| MLB Baseball by Year, 1990–present | 0 | - | 4.02 | 15,075 |
| Battle to Country | 0 | - | 4.91 | 54,111 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,760 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,858 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,981 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,292 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,550 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,022 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,000 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,007 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 25,336 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,723 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,725 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 54,325 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 45,238 |
| Countries of the World in 1789 with a Map | 0 | - | 4.95 | 67,576 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,181 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,983 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,437 |
| 1980s Movie Trivia #2 | 0 | - | 4.28 | 20,846 |
| Ghostbusters Quiz | 0 | - | 3.83 | 5,998 |
| 1990s Catchphrases | 0 | - | 4.22 | 176,606 |
| 2000s Movie Trivia #2 | 0 | - | 4.19 | 28,754 |
| 2000s Movie Co-Stars | 0 | - | 4.33 | 40,074 |
| Former Countries | 0 | - | 4.77 | 134,320 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,818 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,859 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,701 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,030 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,356 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,684 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,730,916 |
| WWII Geography | 0 | - | 4.81 | 121,504 |
| Countries by Independence Day | 0 | - | 4.62 | 52,881 |
| Ancient City to Country | 0 | - | 4.72 | 108,400 |
| Former Countries by Capital | 0 | - | 4.45 | 127,894 |
| City-States | 0 | - | 4.53 | 37,437 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,973 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,520 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,462 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,504 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,795 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,006 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.81 | 55,292 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,765 |
| All Modern-Day Countries Ever Controlled by the Netherlands | 0 | - | 4.95 | 53,920 |
| All Modern-Day Countries Ever Controlled by Portugal | 0 | - | 4.93 | 44,640 |
| Name the English Monarchs | 0 | - | 4.91 | 507,356 |
| 1980s Catchphrases | 0 | - | 3.96 | 193,399 |
| 1980s American TV Trivia | 0 | - | 4.14 | 13,578 |
| Places Mentioned in the Song "Kokomo" | 0 | - | 4.44 | 17,084 |
| 1980s Movie Taglines | 0 | - | 4.22 | 42,844 |
| 1980s Movie Quotes | 0 | - | 4.08 | 42,731 |
| #1 Hits of the 1990s | 0 | - | 4.38 | 100,932 |
| 1990s Movie Taglines | 0 | - | 4.21 | 46,133 |
| 1990s Movie Quotes | 0 | - | 4.36 | 107,412 |
| Recent Movie Taglines Quiz | 0 | - | 4.30 | 54,305 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,303 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,956 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,143 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,850 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,176 |
| People Born on Islands | 0 | - | 4.39 | 53,085 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,829 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,289 |
| City Where It Happened #1 | 0 | - | 4.23 | 106,792 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,780 |
| Prime Ministers of the UK | 0 | - | 4.95 | 443,138 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,862 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,400 |
| The Trojan War | 0 | - | 4.83 | 40,063 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,191 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,883 |
| Roman Provinces on a Map | 0 | - | 4.53 | 37,410 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,518 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 86,799 |
| Countries in World War I | 0 | - | 4.88 | 229,437 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,467 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,974 |
| History of Russia Quiz | 0 | - | 4.47 | 32,026 |
| Famous Immigrants and Exiles | 0 | - | 4.46 | 23,780 |
| History of Italy | 0 | - | 4.55 | 32,183 |
| Guerrillas by Country | 0 | - | 4.40 | 41,252 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,689 |
| Roman Emperors | 0 | - | 4.95 | 121,425 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 43,364 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,901 |
| Name that Greek Letter | 0 | - | 4.93 | 325,261 |
| Ancient Greek Words | 0 | - | 4.93 | 112,649 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,903 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,752 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,603 |
| Livin' on a Prayer Lyrics | 0 | - | 4.28 | 96,427 |
| Michael Jackson Complete Song Discography | 0 | - | 4.56 | 5,815 |
| 1980s Movie Co-Stars | 0 | - | 4.17 | 15,878 |
| O.J. Simpson - Trial of the Century | 0 | - | 3.94 | 7,178 |
| 1990s American TV Trivia | 0 | - | 3.72 | 12,203 |
| 1990s Movie Co-Stars | 0 | - | 3.97 | 33,732 |
| 2000s Movie Quotes Quiz | 0 | - | 3.98 | 75,547 |
| 2000s Oscar Best Actress Nominees | 0 | - | 4.29 | 13,662 |
| 2000s Movies by Plot | 0 | - | 3.76 | 15,053 |
| 2010s Movie Co-Stars | 0 | - | 3.88 | 35,870 |
| 2010s Movies by Plot | 0 | - | 3.85 | 23,083 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,697 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,993 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,624 |
| Geography of the French Empire | 0 | - | 4.45 | 27,233 |
| History of India | 0 | - | 4.62 | 21,525 |
| History of Mexico | 0 | - | 4.52 | 15,375 |
| The Portuguese Empire | 0 | - | 4.58 | 12,117 |
| History of South Africa | 0 | - | 4.60 | 17,777 |
