| #1 Hits of the 1970s | 0 | - | 4.44 | 85,467 |
| Who Did That 1970s Song #1 | 0 | - | 4.48 | 89,204 |
| Who Did That 1970s Song #2 | 0 | - | 4.25 | 53,928 |
| I Will Survive Lyrics | 0 | - | 4.25 | 37,768 |
| #1 Hits of the 1960s | 0 | - | 4.59 | 43,062 |
| 1970s Albums | 0 | - | 4.38 | 27,799 |
| 1970s Music Trivia | 0 | - | 4.29 | 31,822 |
| Who Did That 1960s Song #2 | 0 | - | 4.46 | 41,211 |
| #1 Hits of the 1980s | 0 | - | 4.87 | 149,625 |
| Who Did That 1960s Song #1 | 0 | - | 4.38 | 47,825 |
| Woodstock Performers | 0 | - | 4.55 | 10,684 |
| People Portrayed by Andy Warhol | 0 | - | 4.35 | 38,285 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,321 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 51,015 |
| 1970s Decade Quiz | 0 | - | 4.23 | 61,032 |
| 1970s Celebrities | 0 | - | 4.03 | 13,795 |
| Movies by Year, 1950–1969 | 0 | - | 4.48 | 22,135 |
| 1970s Movie Trivia | 0 | - | 4.28 | 21,852 |
| 1960s Catchphrases | 0 | - | 4.14 | 105,146 |
| 1960s Music Trivia | 0 | - | 4.36 | 23,805 |
| 1980s Movie Quotes | 0 | - | 4.08 | 42,730 |
| #1 Hits of the 1990s | 0 | - | 4.38 | 100,927 |
| 1990s Movie Quotes | 0 | - | 4.36 | 107,410 |
| Fads of the 1970s | 0 | - | 4.19 | 28,452 |
| 1970s American TV Trivia | 0 | - | 4.12 | 12,501 |
| Highest Grossing 1970s Movies | 0 | - | 4.30 | 29,599 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 194,006 |
| 2017 News Stories - Name the Country | 0 | - | 4.46 | 28,639 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,943 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,909 |
| 1980s Movie Trivia #1 | 0 | - | 4.58 | 31,542 |
| Livin' on a Prayer Lyrics | 0 | - | 4.28 | 96,425 |
| Places Mentioned in the Song "Kokomo" | 0 | - | 4.44 | 17,084 |
| Michael Jackson Complete Song Discography | 0 | - | 4.56 | 5,811 |
| 1980s Movie Taglines | 0 | - | 4.22 | 42,843 |
| 1990s Movie Trivia #1 | 0 | - | 4.38 | 53,178 |
| 1990s Movie Trivia #2 | 0 | - | 4.40 | 42,004 |
| 1990s Movie Taglines | 0 | - | 4.21 | 46,131 |
| 2000s Movie Trivia #1 | 0 | - | 4.36 | 73,449 |
| 2010s Movie Trivia | 0 | - | 4.33 | 51,264 |
| Title in the Lyrics #2 - The Beatles | 0 | - | 4.57 | 94,371 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,273 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,168 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,063 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,438 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,221 |
| Countries by Founding Story | 0 | - | 4.95 | 77,904 |
| Recently Independent Countries | 0 | - | 4.98 | 160,502 |
| Independence from Whom | 0 | - | 4.99 | 213,394 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,653 |
| Historical City to Country | 0 | - | 4.85 | 79,097 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,924 |
| Countries by Former Name | 0 | - | 4.99 | 125,967 |
| Cities by Former Name | 0 | - | 4.83 | 92,174 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,489 |
| Movies by Year, 1970–1989 | 0 | - | 4.38 | 25,482 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 41,306 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,796 |
| All Modern-Day Countries Ever Controlled by the British | 0 | - | 4.81 | 50,269 |
| Rat Pack Members | 0 | - | 4.03 | 5,201 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,850 |
| Don't Stop Believin' Lyrics | 0 | - | 4.47 | 224,765 |
| 1980s Albums | 0 | - | 4.41 | 46,756 |
| Who Did That 1980s Song #3 | 0 | - | 4.58 | 54,978 |
| Highest Grossing 1980s Movies | 0 | - | 4.47 | 65,854 |
| Back to the Future Trivia | 0 | - | 4.59 | 34,718 |
| Highest Grossing 1990s Movies | 0 | - | 4.50 | 109,034 |
| 2000s Movie Quotes Quiz | 0 | - | 3.98 | 75,546 |
| Top 10 Oldest African Countries | 0 | - | 4.87 | 28,299 |
| Former Flags | 0 | - | 4.97 | 108,808 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,688 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,017 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,593 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,507 |
| Historic Orient Express Routes Map | 0 | - | 5.00 | 53,900 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 306,385 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,655 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,724 |
| U.S. History Timeline Quiz | 0 | - | 4.96 | 57,332 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,519 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,462 |
| MLB Baseball by Year, 1960–1989 | 0 | - | 4.09 | 18,717 |
| 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 | 54,101 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,739 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,854 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,974 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,286 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,534 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,980 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,981 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,000 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 25,331 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,713 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,718 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 54,316 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 45,230 |
| Countries of the World in 1789 with a Map | 0 | - | 4.95 | 67,562 |
| Name the English Monarchs | 0 | - | 4.91 | 507,279 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,167 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,977 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,436 |
| 1960s American TV Trivia | 0 | - | 4.05 | 11,689 |
| 1980s Movie Trivia #2 | 0 | - | 4.28 | 20,845 |
| Who Did That 1980s Song #2 | 0 | - | 4.31 | 75,847 |
| Who Did That 1980s Song #1 | 0 | - | 4.37 | 170,998 |
| "We Are the World" Solo Musicians | 0 | - | 4.17 | 11,438 |
| Africa - Toto Lyrics | 0 | - | 4.58 | 7,351 |
| 1980s Movies by Plot | 0 | - | 4.25 | 29,112 |
| 1990s Catchphrases | 0 | - | 4.22 | 176,598 |
| Friends A-Z | 0 | - | 4.47 | 40,695 |
| Who Did That 1990s Song #2 | 0 | - | 4.28 | 61,369 |
| 1990s One Hit Wonders | 0 | - | 4.00 | 38,029 |
| Who Did That 1990s Song #1 | 0 | - | 4.17 | 76,501 |
| Who Did That 1990s Song #3 | 0 | - | 4.08 | 56,235 |
| Top Box Office Stars of the 1990s | 0 | - | 4.30 | 31,789 |
| 1990s Movies by Plot | 0 | - | 4.13 | 27,872 |
| 2000s Catchphrases | 0 | - | 3.04 | 349,390 |
| 2000s Movie Trivia #2 | 0 | - | 4.19 | 28,750 |
| 2000s Movie Co-Stars | 0 | - | 4.33 | 40,073 |
| World Map Without 20 Random Countries | 0 | - | 4.99 | 8,413,137 |
| Former Countries | 0 | - | 4.77 | 134,315 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,812 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,859 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,289 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,352 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,680 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,777 |
| Prime Ministers of the UK | 0 | - | 4.95 | 443,050 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,730,571 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,841 |
| U.S. President Scramble | 0 | - | 4.40 | 117,553 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,337 |
| The Trojan War | 0 | - | 4.83 | 40,043 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,147 |
| Word Chain - Greek and Roman Mythology | 0 | - | 4.50 | 57,062 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,838 |
| Roman Provinces on a Map | 0 | - | 4.53 | 37,400 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,430 |
| WWII Geography | 0 | - | 4.81 | 121,496 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 86,783 |
| Countries in World War I | 0 | - | 4.88 | 229,414 |
| Countries by Independence Day | 0 | - | 4.62 | 52,880 |
| Ancient City to Country | 0 | - | 4.72 | 108,399 |
| Former Countries by Capital | 0 | - | 4.45 | 127,887 |
| City-States | 0 | - | 4.53 | 37,436 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,951 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,680 |
| Roman Emperors | 0 | - | 4.95 | 121,401 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 43,360 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,811 |
| Name that Greek Letter | 0 | - | 4.93 | 325,228 |
| Ancient Greek Words | 0 | - | 4.93 | 112,632 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,498 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,786 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,998 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,593 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.81 | 55,283 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,753 |
| All Modern-Day Countries Ever Controlled by Portugal | 0 | - | 4.93 | 44,634 |
| Top 100 UK Baby Girls' Names in 1850 | 0 | - | 4.32 | 62,658 |
| 1980s Catchphrases | 0 | - | 3.96 | 193,393 |
| Who Did That Power Ballad? | 0 | - | 3.86 | 38,219 |
| Hair Band Songs Quiz | 0 | - | 4.22 | 28,970 |
| 1980s Movie Co-Stars | 0 | - | 4.17 | 15,877 |
| Brat Pack Actors | 0 | - | 4.32 | 7,170 |
| O.J. Simpson - Trial of the Century | 0 | - | 3.94 | 7,178 |
| Friends Theme Song Lyrics | 0 | - | 4.37 | 143,800 |
| Ice Ice Baby Lyrics | 0 | - | 3.48 | 36,403 |
| 1990s Albums | 0 | - | 4.23 | 25,694 |
| Girls of Mambo Number 5 | 0 | - | 4.38 | 19,556 |
| Things that Alanis Morissette Finds "Ironic" | 0 | - | 4.26 | 22,357 |
| 1990s Movie Co-Stars | 0 | - | 3.97 | 33,732 |
| Recent Movie Taglines Quiz | 0 | - | 4.30 | 54,305 |
| 2000s Oscar Best Actress Nominees | 0 | - | 4.29 | 13,662 |
| 2010s Movie Co-Stars | 0 | - | 3.88 | 35,868 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,672 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,968 |
| Monty Python Quotes | 0 | - | 4.89 | 42,625 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 494,930 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.96 | 172,948 |
| Countries with Four Letters - Shape Quiz | 0 | - | 4.97 | 102,031 |
| Random European Capital to Country | 0 | - | 4.98 | 192,340 |
| Random European Country to Capital | 0 | - | 4.93 | 166,072 |
| Random Asian Country to Capital | 0 | - | 4.92 | 97,086 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,568 |
| Random African Capital to Country | 0 | - | 4.97 | 101,470 |
| Random African Country to Capital | 0 | - | 4.94 | 71,880 |
| Random Sequential Countries on the World Map | 0 | - | 5.00 | 527,057 |
| Random Countries on the World Map | 0 | - | 5.00 | 1,561,485 |
| Random Countries on the Borderless World Map | 0 | - | 4.99 | 186,100 |
| Countries in Random Rings of the World Map | 0 | - | 4.99 | 87,856 |
| Countries in Random Squares of the World Map | 0 | - | 4.99 | 340,238 |
| Random European Flag to Country | 0 | - | 4.90 | 184,452 |
| Random African Flag to Country | 0 | - | 4.87 | 75,722 |
| Random Country Shape to Country | 0 | - | 4.90 | 115,802 |
| Countries in Hexagons of the World Map | 0 | - | 4.99 | 109,708 |
| Countries in Squares of the World Map | 0 | - | 5.00 | 185,785 |
| Countries in Squares of an Empty World Map | 0 | - | 4.99 | 127,621 |
