| #1 Hits of the 1960s | 0 | - | 4.59 | 43,072 |
| Who Did That 1960s Song #2 | 0 | - | 4.46 | 41,229 |
| Who Did That 1960s Song #1 | 0 | - | 4.38 | 47,841 |
| Woodstock Performers | 0 | - | 4.55 | 10,695 |
| #1 Hits of the 1970s | 0 | - | 4.44 | 85,501 |
| Who Did That 1970s Song #1 | 0 | - | 4.48 | 89,239 |
| #1 Hits of the 1980s | 0 | - | 4.87 | 149,689 |
| 1960s Music Trivia | 0 | - | 4.36 | 23,809 |
| Who Did That 1970s Song #2 | 0 | - | 4.25 | 53,950 |
| I Will Survive Lyrics | 0 | - | 4.25 | 37,783 |
| 1970s Music Trivia | 0 | - | 4.29 | 31,836 |
| Rat Pack Members | 0 | - | 4.03 | 5,205 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,858 |
| Prime Ministers of the UK | 0 | - | 4.95 | 443,412 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,733,071 |
| 1970s Albums | 0 | - | 4.38 | 27,808 |
| 1960s Catchphrases | 0 | - | 4.14 | 105,165 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,442 |
| 1960s American TV Trivia | 0 | - | 4.05 | 11,689 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,666 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,657 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,937 |
| G1 The Transformers Quiz | 0 | - | 4.60 | 22,596 |
| Places Mentioned in the Song "Kokomo" | 0 | - | 4.44 | 17,093 |
| 1980s Movie Taglines | 0 | - | 4.22 | 42,847 |
| 1980s Movie Quotes | 0 | - | 4.08 | 42,742 |
| #1 Hits of the 1990s | 0 | - | 4.38 | 100,969 |
| 1990s Movie Taglines | 0 | - | 4.21 | 46,140 |
| 1990s Movie Quotes | 0 | - | 4.36 | 107,428 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,849 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,739 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,377 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,253 |
| Countries by Founding Story | 0 | - | 4.95 | 77,950 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,781 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,262 |
| Independence from Whom | 0 | - | 4.99 | 213,539 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,753 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,961 |
| 2017 News Stories - Name the Country | 0 | - | 4.46 | 28,648 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,950 |
| 1970s Decade Quiz | 0 | - | 4.23 | 61,078 |
| People Portrayed by Andy Warhol | 0 | - | 4.35 | 38,307 |
| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,340 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 51,036 |
| 1980s Movie Trivia #1 | 0 | - | 4.58 | 31,551 |
| 1980s Albums | 0 | - | 4.41 | 46,785 |
| Who Did That 1980s Song #3 | 0 | - | 4.58 | 55,022 |
| Highest Grossing 1980s Movies | 0 | - | 4.47 | 65,880 |
| 1990s Movie Trivia #1 | 0 | - | 4.38 | 53,194 |
| 1990s Movie Trivia #2 | 0 | - | 4.40 | 42,019 |
| Highest Grossing 1990s Movies | 0 | - | 4.50 | 109,070 |
| 2000s Movie Trivia #1 | 0 | - | 4.36 | 73,529 |
| 2010s Movie Trivia | 0 | - | 4.33 | 51,289 |
| Fads of the 1960s | 0 | - | 4.00 | 11,527 |
| Top 10 Oldest African Countries | 0 | - | 4.87 | 28,328 |
| Former Flags | 0 | - | 4.97 | 108,885 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,279 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,213 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,607 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,531 |
| Historic Orient Express Routes Map | 0 | - | 5.00 | 53,969 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,708 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,508 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,798 |
| Presidential Middle Names | 0 | - | 4.42 | 60,838 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,768 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,959 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,668 |
| Recently Independent Countries | 0 | - | 4.98 | 160,584 |
| Flags of WW1 | 0 | - | 4.60 | 38,799 |
| Warsaw Pact Countries | 0 | - | 4.83 | 85,016 |
| Historical City to Country | 0 | - | 4.85 | 79,122 |
| Countries by Former Name | 0 | - | 4.99 | 126,034 |
| Cities by Former Name | 0 | - | 4.83 | 92,224 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,492 |
| MLB Baseball by Year, 1960–1989 | 0 | - | 4.09 | 18,719 |
| NFL Football by Year, 1967–1999 | 0 | - | 4.34 | 25,513 |
| Movies by Year, 1970–1989 | 0 | - | 4.38 | 25,490 |
| MLB Baseball by Year, 1990–present | 0 | - | 4.02 | 15,082 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,846 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,893 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 58,020 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 41,327 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,818 |
| All Modern-Day Countries Ever Controlled by the British | 0 | - | 4.81 | 50,302 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 54,392 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 45,304 |
| Countries of the World in 1789 with a Map | 0 | - | 4.95 | 67,648 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,215 |
| 1970s Celebrities | 0 | - | 4.03 | 13,797 |
| 1970s Movie Trivia | 0 | - | 4.28 | 21,863 |
| Movies by Year, 1950–1969 | 0 | - | 4.48 | 22,141 |
| 1980s Movie Trivia #2 | 0 | - | 4.28 | 20,852 |
| Who Did That 1980s Song #2 | 0 | - | 4.31 | 75,886 |
| Who Did That 1980s Song #1 | 0 | - | 4.37 | 171,062 |
| Don't Stop Believin' Lyrics | 0 | - | 4.47 | 224,820 |
| Africa - Toto Lyrics | 0 | - | 4.58 | 7,400 |
| Back to the Future Trivia | 0 | - | 4.59 | 34,724 |
| Who Did That 1990s Song #2 | 0 | - | 4.28 | 61,407 |
| Who Did That 1990s Song #1 | 0 | - | 4.17 | 76,548 |
| Who Did That 1990s Song #3 | 0 | - | 4.08 | 56,271 |
| Top Box Office Stars of the 1990s | 0 | - | 4.30 | 31,805 |
| 2000s Movie Trivia #2 | 0 | - | 4.19 | 28,766 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,965 |
| U.S. Presidents Who Added the Most Territory | 0 | - | 4.67 | 14,267 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,757 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,124 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,645 |
| Soviet Leaders 1917–1991 | 0 | - | 4.44 | 95,710 |
| Paramount Leaders of China | 0 | - | 4.36 | 11,147 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,233 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,387 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,809 |
| First Ladies of the United States | 0 | - | 4.28 | 86,041 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,342 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,551 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,265 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,392 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,127 |
| Win the 1828 U.S. Presidential Election | 0 | - | 4.32 | 59,726 |
| Name the Popes Quiz | 0 | - | 4.47 | 139,128 |
| Countries of the Popes | 0 | - | 4.78 | 128,947 |
| Arthurian Legend | 0 | - | 4.33 | 25,199 |
| WWII Geography | 0 | - | 4.81 | 121,556 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,088 |
| U.S. History Timeline Quiz | 0 | - | 4.96 | 57,407 |
| The American Revolution | 0 | - | 4.52 | 54,401 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,353 |
| Name that Greek Letter | 0 | - | 4.93 | 325,404 |
| 10 Plagues of Egypt | 0 | - | 4.41 | 53,942 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,527 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,474 |
| Battle to Country | 0 | - | 4.91 | 54,158 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,333 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,568 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,850 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,071 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,645 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,248 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,093 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,081 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 25,365 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,787 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.81 | 55,323 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.97 | 54,813 |
| All Modern-Day Countries Ever Controlled by the Netherlands | 0 | - | 4.95 | 53,960 |
| All Modern-Day Countries Ever Controlled by Portugal | 0 | - | 4.93 | 44,680 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,739 |
| Name the English Monarchs | 0 | - | 4.91 | 507,650 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 46,012 |
| Fads of the 1970s | 0 | - | 4.19 | 28,457 |
| 1970s American TV Trivia | 0 | - | 4.12 | 12,501 |
| Highest Grossing 1970s Movies | 0 | - | 4.30 | 29,606 |
| Who Did That Power Ballad? | 0 | - | 3.86 | 38,223 |
| Hair Band Songs Quiz | 0 | - | 4.22 | 28,973 |
| "We Are the World" Solo Musicians | 0 | - | 4.17 | 11,449 |
| Brat Pack Actors | 0 | - | 4.32 | 7,175 |
| 1980s Movies by Plot | 0 | - | 4.25 | 29,116 |
| Friends A-Z | 0 | - | 4.47 | 40,716 |
| 1990s One Hit Wonders | 0 | - | 4.00 | 38,035 |
| Ice Ice Baby Lyrics | 0 | - | 3.48 | 36,405 |
| 1990s Albums | 0 | - | 4.23 | 25,705 |
| Girls of Mambo Number 5 | 0 | - | 4.38 | 19,561 |
| Things that Alanis Morissette Finds "Ironic" | 0 | - | 4.26 | 22,362 |
| 1990s Movies by Plot | 0 | - | 4.13 | 27,880 |
| Recent Movie Taglines Quiz | 0 | - | 4.30 | 54,312 |
| 2000s Movie Co-Stars | 0 | - | 4.33 | 40,092 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,209 |
| African Countries with the Most Christians | 0 | - | 4.94 | 76,257 |
| Country Picture Puzzle Game #1 | 0 | - | 4.86 | 86,984 |
| Divided Country Shape Puzzle #1 | 0 | - | 4.88 | 54,082 |
| Former Countries | 0 | - | 4.77 | 134,350 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,310 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,977 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,156 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,867 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,178 |
| People Born on Islands | 0 | - | 4.39 | 53,099 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,850 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,841 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,869 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,399 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,297 |
| City Where It Happened #1 | 0 | - | 4.23 | 106,804 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,364 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,696 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,833 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 429,006 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.38 | 24,096 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 384,005 |
| The George Washington Presidency | 0 | - | 4.03 | 14,622 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,790 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,785 |
| The John Adams Presidency | 0 | - | 4.12 | 8,799 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 17,005 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,790 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,779 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,945 |
| The Dictator Files: Chairman Mao | 0 | - | 4.28 | 20,774 |
