| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 57,735 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,501 |
| 2010s Decade Quiz | 0 | - | 4.53 | 101,399 |
| 1970s Movie Trivia | 0 | - | 4.28 | 21,469 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,463 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,377 |
| Countries by Founding Story | 0 | - | 4.95 | 76,805 |
| Independence from Whom | 0 | - | 4.99 | 210,380 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,206 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,174 |
| Movies by Year, 1950–1969 | 0 | - | 4.48 | 22,031 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 44,590 |
| 2017 News Stories - Name the Country | 0 | - | 4.46 | 28,431 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,788 |
| 2000s Decade Quiz | 0 | - | 4.23 | 120,450 |
| 1980s Decade Quiz | 0 | - | 4.38 | 76,512 |
| 1990s Decade Quiz | 0 | - | 4.01 | 54,700 |
| 1850s Decade Quiz | 0 | - | 4.42 | 35,023 |
| 1790s Decade Quiz | 0 | - | 4.55 | 33,469 |
| 1800s Decade Quiz | 0 | - | 4.47 | 31,755 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,718 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,010 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,938 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,629 |
| Recently Independent Countries | 0 | - | 4.98 | 158,292 |
| Historical City to Country | 0 | - | 4.84 | 78,282 |
| Countries by Former Name | 0 | - | 4.99 | 124,601 |
| Cities by Former Name | 0 | - | 4.84 | 91,200 |
| NFL Football by Year, 2000–present | 0 | - | 4.26 | 27,935 |
| NBA Basketball by Year, 1970–1999 | 0 | - | 4.28 | 44,843 |
| NBA Basketball by Year, 2000–Present | 0 | - | 4.33 | 60,458 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,815 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,054 |
| Fads of the 1970s | 0 | - | 4.19 | 28,352 |
| 1970s American TV Trivia | 0 | - | 4.12 | 12,438 |
| Former Flags | 0 | - | 4.97 | 107,069 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,708 |
| Historic Orient Express Routes Map | 0 | - | 5.00 | 53,197 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 49,779 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,344 |
| Name a Valid Year in History | 0 | - | 4.93 | 66,682 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,336 |
| MLB Baseball by Year, 1960–1989 | 0 | - | 4.09 | 18,663 |
| NFL Football by Year, 1967–1999 | 0 | - | 4.34 | 25,431 |
| MLB Baseball by Year, 1990–present | 0 | - | 4.02 | 14,961 |
| 1900s Decade Quiz | 0 | - | 4.18 | 44,064 |
| 1860s Decade Quiz | 0 | - | 4.31 | 40,223 |
| 1880s Decade Quiz | 0 | - | 4.24 | 39,254 |
| 1890s Decade Quiz | 0 | - | 4.24 | 39,655 |
| 1870s Decade Quiz | 0 | - | 4.28 | 36,489 |
| 1840s Decade Quiz | 0 | - | 4.30 | 37,499 |
| 1810s Decade Quiz | 0 | - | 4.58 | 30,832 |
| 1820s Decade Quiz | 0 | - | 4.54 | 29,712 |
| 1830s Decade Quiz | 0 | - | 4.42 | 29,078 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,113 |
| Countries of the World in 1444 | 0 | - | 4.98 | 59,819 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,078 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,637 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,359 |
| Countries of Europe before World War II with a Map | 0 | - | 4.94 | 52,684 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 43,909 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,042 |
| Highest Grossing 1970s Movies | 0 | - | 4.30 | 29,366 |
| Former Countries | 0 | - | 4.75 | 132,915 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,268 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,566 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,356 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,020 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,302 |
| Countries by Independence Day | 0 | - | 4.61 | 52,660 |
| Ancient City to Country | 0 | - | 4.70 | 107,768 |
| Former Countries by Capital | 0 | - | 4.45 | 127,211 |
| City-States | 0 | - | 4.53 | 37,158 |
| U.S. History Timeline Quiz | 0 | - | 4.97 | 56,096 |
| Battle to Country | 0 | - | 4.91 | 52,820 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,411 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,418 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,766 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,872 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,417 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,298 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,399 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,130 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,505 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,053 |
| People Born on Islands | 0 | - | 4.39 | 52,808 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,229 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,731 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,066 |
| City Where It Happened #1 | 0 | - | 4.24 | 106,203 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 42,881 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,670,251 |
| Roman Provinces on a Map | 0 | - | 4.54 | 36,718 |
| WWII Geography | 0 | - | 4.81 | 119,748 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,710 |
| Famous Immigrants and Exiles | 0 | - | 4.45 | 23,035 |
| Guerrillas by Country | 0 | - | 4.40 | 41,016 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,652 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,363 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,189 |
| 1780s Decade Quiz | 0 | - | 4.36 | 25,464 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,292 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,593 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,770 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,486 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 53,668 |
| All Modern-Day Countries Ever Controlled by the British | 0 | - | 4.80 | 49,551 |
| All Modern-Day Countries Ever Controlled by Portugal | 0 | - | 4.94 | 43,754 |
| Name the English Monarchs | 0 | - | 4.92 | 499,651 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 47,854 |
| 1970s Celebrities | 0 | - | 4.03 | 13,736 |
| People Portrayed by Andy Warhol | 0 | - | 4.35 | 37,776 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,690 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,545 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 54,148 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,233 |
| The Trojan War | 0 | - | 4.83 | 39,536 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,042 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,941 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,068 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 85,217 |
| Countries in World War I | 0 | - | 4.88 | 227,258 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,070 |
| History of Russia Quiz | 0 | - | 4.49 | 31,831 |
| History of Italy | 0 | - | 4.55 | 31,880 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,230 |
| Roman Emperors | 0 | - | 4.95 | 119,050 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,061 |
| Name that Greek Letter | 0 | - | 4.93 | 322,338 |
| Quiz on the Year 2001 | 0 | - | 4.48 | 24,201 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,582 |
| 1940s Decade Quiz | 0 | - | 4.51 | 51,730 |
| 1770s Decade Quiz | 0 | - | 3.99 | 26,938 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.74 | 45,284 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.77 | 33,146 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,719 |
| All Modern-Day Countries Ever Controlled by Germanic People | 0 | - | 4.47 | 28,906 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,419 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.13 | 79,145 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,100 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 94,842 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,012 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,000 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,158 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,233 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,647 |
| 1970s Music Trivia | 0 | - | 4.29 | 31,509 |
| Who Did That 1970s Song #1 | 0 | - | 4.48 | 88,399 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,513 |
| Geography of the French Empire | 0 | - | 4.45 | 26,983 |
| History of India | 0 | - | 4.61 | 21,331 |
| The Portuguese Empire | 0 | - | 4.58 | 12,022 |
| History of South Africa | 0 | - | 4.60 | 17,632 |
| History of Iran | 0 | - | 4.66 | 16,298 |
| History of Austria | 0 | - | 4.70 | 17,792 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,551 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,710 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,201 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,515 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,884 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,926 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 4.01 | 19,562 |
| Countries in World War II | 0 | - | 4.54 | 907,651 |
| Communist Countries in History | 0 | - | 4.63 | 493,623 |
| Political Movements by Country | 0 | - | 4.46 | 72,360 |
| Home Cities in History #1 | 0 | - | 4.04 | 16,537 |
| History of China | 0 | - | 4.37 | 56,868 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,418 |
| The Vikings! | 0 | - | 4.46 | 28,278 |
| The French Revolution | 0 | - | 4.46 | 23,848 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 42,723 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,832 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,790 |
| Ancient Greek Words | 0 | - | 4.93 | 111,024 |
| Quiz on the Year 1997 | 0 | - | 4.39 | 20,940 |
| Quiz on the Year 1998 | 0 | - | 4.33 | 17,235 |
| Quiz on the Year 2000 | 0 | - | 4.08 | 21,126 |
| Movies by Year, 1970–1989 | 0 | - | 4.38 | 25,381 |
| 20th Century A-Z | 0 | - | 4.50 | 53,261 |
| 19th Century A-Z | 0 | - | 4.77 | 46,817 |
| 18th Century A-Z | 0 | - | 4.54 | 42,700 |
| Inventions by Country #1 | 0 | - | 4.46 | 54,927 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,016 |
| All Modern-Day Countries Ever Controlled by Slavic People | 0 | - | 4.16 | 28,459 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,255 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,048 |
| Geography of the British Empire | 0 | - | 4.48 | 39,566 |
| History of France | 0 | - | 4.59 | 56,506 |
| 1980s Celebrities by Picture #1 | 0 | - | 3.97 | 61,313 |
| Fresh Prince of Bel-Air Lyrics | 0 | - | 4.86 | 588,292 |
| Seinfeld Trivia | 0 | - | 4.57 | 35,037 |
| Main Friends Characters and Actors | 0 | - | 4.42 | 52,002 |
| Friends - Finish the Quote | 0 | - | 4.57 | 43,325 |
| 2000s Celebrities by Picture #1 | 0 | - | 3.93 | 101,902 |
| Characters from The Office | 0 | - | 4.48 | 46,048 |
| The Office Trivia #1 | 0 | - | 4.43 | 94,334 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,142 |
| 1930s Celebrities by Picture | 0 | - | 4.33 | 12,400 |
| Who Did That 1970s Song #2 | 0 | - | 4.25 | 53,367 |
| #1 Hits of the 1970s | 0 | - | 4.44 | 84,534 |
