| 1970s Celebrities by Picture #1 | 0 | - | 4.20 | 58,069 |
| 1970s Celebrities by Picture #2 | 0 | - | 4.21 | 50,787 |
| 2010s Decade Quiz | 0 | - | 4.53 | 103,129 |
| 1970s Movie Trivia | 0 | - | 4.28 | 21,725 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,546 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,893 |
| Countries by Founding Story | 0 | - | 4.95 | 77,416 |
| Independence from Whom | 0 | - | 4.99 | 212,236 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,824 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,628 |
| Movies by Year, 1950–1969 | 0 | - | 4.48 | 22,078 |
| 1960s Decade Quiz #2 | 0 | - | 4.45 | 45,203 |
| 2017 News Stories - Name the Country | 0 | - | 4.46 | 28,553 |
| 2018 News Stories - Name the Country | 0 | - | 4.42 | 23,883 |
| 2000s Decade Quiz | 0 | - | 4.23 | 122,420 |
| 1980s Decade Quiz | 0 | - | 4.37 | 85,353 |
| 1850s Decade Quiz | 0 | - | 4.42 | 35,301 |
| 1790s Decade Quiz | 0 | - | 4.55 | 33,748 |
| 1800s Decade Quiz | 0 | - | 4.47 | 32,019 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,078 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,332 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,887 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,418 |
| Recently Independent Countries | 0 | - | 4.98 | 159,532 |
| Historical City to Country | 0 | - | 4.84 | 78,663 |
| Countries by Former Name | 0 | - | 4.99 | 125,405 |
| Cities by Former Name | 0 | - | 4.83 | 91,767 |
| NFL Football by Year, 2000–present | 0 | - | 4.26 | 28,134 |
| NBA Basketball by Year, 1970–1999 | 0 | - | 4.28 | 45,055 |
| NBA Basketball by Year, 2000–Present | 0 | - | 4.34 | 61,106 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 41,136 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,481 |
| Fads of the 1970s | 0 | - | 4.19 | 28,409 |
| 1970s American TV Trivia | 0 | - | 4.12 | 12,472 |
| Former Flags | 0 | - | 4.97 | 108,021 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,232 |
| Historic Orient Express Routes Map | 0 | - | 5.00 | 53,612 |
| 1960s Decade Quiz #1 | 0 | - | 4.40 | 50,397 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,574 |
| Name a Valid Year in History | 0 | - | 4.93 | 67,527 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,433 |
| MLB Baseball by Year, 1960–1989 | 0 | - | 4.09 | 18,705 |
| NFL Football by Year, 1967–1999 | 0 | - | 4.34 | 25,489 |
| MLB Baseball by Year, 1990–present | 0 | - | 4.02 | 15,043 |
| 1900s Decade Quiz | 0 | - | 4.18 | 44,318 |
| 1860s Decade Quiz | 0 | - | 4.31 | 40,422 |
| 1880s Decade Quiz | 0 | - | 4.25 | 39,473 |
| 1890s Decade Quiz | 0 | - | 4.25 | 39,883 |
| 1990s Decade Quiz | 0 | - | 4.00 | 62,491 |
| 1870s Decade Quiz | 0 | - | 4.28 | 36,681 |
| 1840s Decade Quiz | 0 | - | 4.31 | 37,701 |
| 1810s Decade Quiz | 0 | - | 4.58 | 31,029 |
| 1820s Decade Quiz | 0 | - | 4.54 | 29,897 |
| 1830s Decade Quiz | 0 | - | 4.42 | 29,265 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,099 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,472 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,605 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 25,065 |
| All Modern-Day Countries Ever Controlled by the Seljuks | 0 | - | 4.92 | 28,587 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 53,686 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 44,754 |
| Countries of the World in 1789 with a Map | 0 | - | 4.95 | 66,873 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,795 |
| Highest Grossing 1970s Movies | 0 | - | 4.30 | 29,520 |
| Former Countries | 0 | - | 4.75 | 133,968 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,601 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,728 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,102 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,160 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,488 |
| Countries by Independence Day | 0 | - | 4.61 | 52,787 |
| Ancient City to Country | 0 | - | 4.70 | 108,166 |
| Former Countries by Capital | 0 | - | 4.45 | 127,627 |
| City-States | 0 | - | 4.53 | 37,316 |
| U.S. History Timeline Quiz | 0 | - | 4.96 | 56,968 |
| Battle to Country | 0 | - | 4.91 | 53,577 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,956 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,810 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,708 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,169 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,382 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,188 |
| Modern-Day Countries of the Holy Roman Empire on a Map | 0 | - | 4.93 | 45,767 |
| 1970s Music Trivia | 0 | - | 4.29 | 31,680 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,229 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,768 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,131 |
| People Born on Islands | 0 | - | 4.39 | 52,980 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,131 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,071 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,196 |
| City Where It Happened #1 | 0 | - | 4.23 | 106,399 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,403 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,710,469 |
| Roman Provinces on a Map | 0 | - | 4.54 | 37,085 |
| WWII Geography | 0 | - | 4.81 | 120,610 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,887 |
| Famous Immigrants and Exiles | 0 | - | 4.46 | 23,566 |
| Guerrillas by Country | 0 | - | 4.40 | 41,167 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,300 |
| 2019 News Stories - Name the Country | 0 | - | 4.21 | 18,455 |
| 2020 News Stories - Name the Country | 0 | - | 4.35 | 30,348 |
| 1780s Decade Quiz | 0 | - | 4.36 | 25,622 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,103 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,335 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,546 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,980 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,368 |
| All Modern-Day Countries Ever Controlled by the British | 0 | - | 4.80 | 49,988 |
| All Modern-Day Countries Ever Controlled by the Netherlands | 0 | - | 4.95 | 53,594 |
| All Modern-Day Countries Ever Controlled by Portugal | 0 | - | 4.94 | 44,286 |
| All Modern-Day Countries Ever Controlled by the Russian Empire | 0 | - | 4.96 | 37,623 |
| Name the English Monarchs | 0 | - | 4.91 | 504,267 |
| 1940s Celebrities by Picture | 0 | - | 4.43 | 48,102 |
| 1970s Celebrities | 0 | - | 4.03 | 13,763 |
| People Portrayed by Andy Warhol | 0 | - | 4.35 | 38,078 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,976 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,733 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,569 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,344 |
| The Trojan War | 0 | - | 4.83 | 39,815 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,323 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,614 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,476 |
| Modern-Day Axis-Occupied Countries of WWII on a Map | 0 | - | 4.99 | 86,185 |
| Countries in World War I | 0 | - | 4.88 | 228,540 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,311 |
| History of Russia Quiz | 0 | - | 4.47 | 31,960 |
| History of Italy | 0 | - | 4.55 | 32,067 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,670 |
| Roman Emperors | 0 | - | 4.95 | 120,454 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,335 |
| Name that Greek Letter | 0 | - | 4.93 | 324,255 |
| Quiz on the Year 2001 | 0 | - | 4.48 | 24,455 |
| Movies by Year, 1990–2009 | 0 | - | 4.21 | 66,774 |
| 1940s Decade Quiz | 0 | - | 4.51 | 52,231 |
| 1770s Decade Quiz | 0 | - | 3.99 | 27,086 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,647 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,498 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,252 |
| All Modern-Day Countries Ever Controlled by Germanic People | 0 | - | 4.47 | 29,112 |
| 1980s Celebrities by Picture #2 | 0 | - | 4.19 | 71,885 |
| 1990s Celebrities by Picture #1 | 0 | - | 4.14 | 79,569 |
| 1990s Celebrities by Picture #2 | 0 | - | 4.16 | 72,604 |
| 2000s Celebrities by Picture #2 | 0 | - | 4.15 | 95,802 |
| 1950s Celebrities by Picture #1 | 0 | - | 4.24 | 51,261 |
| 1950s Celebrities by Picture #2 | 0 | - | 4.29 | 46,245 |
| 1960s Celebrities by Picture #1 | 0 | - | 4.27 | 70,575 |
| 1960s Celebrities by Picture #2 | 0 | - | 4.26 | 51,536 |
| Highest Grossing 1960s Movies | 0 | - | 4.45 | 22,788 |
| Who Did That 1970s Song #1 | 0 | - | 4.48 | 88,725 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,588 |
| Geography of the French Empire | 0 | - | 4.45 | 27,161 |
| History of India | 0 | - | 4.62 | 21,464 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| History of South Africa | 0 | - | 4.60 | 17,724 |
| History of Iran | 0 | - | 4.66 | 16,388 |
| History of Austria | 0 | - | 4.70 | 17,916 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,299 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,206 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,433 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,698 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,509 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,084 |
| Countries Most Affected by the 2004 Tsunami | 0 | - | 4.01 | 19,629 |
| Countries in World War II | 0 | - | 4.55 | 915,220 |
| Communist Countries in History | 0 | - | 4.63 | 496,734 |
| Political Movements by Country | 0 | - | 4.46 | 72,639 |
| Home Cities in History #1 | 0 | - | 4.04 | 16,583 |
| History of China | 0 | - | 4.37 | 57,357 |
| The Vikings! | 0 | - | 4.46 | 28,372 |
| The French Revolution | 0 | - | 4.47 | 24,072 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 43,052 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,240 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,297 |
| Ancient Greek Words | 0 | - | 4.93 | 111,980 |
| Quiz on the Year 1997 | 0 | - | 4.40 | 21,123 |
| Quiz on the Year 1998 | 0 | - | 4.33 | 17,377 |
| Quiz on the Year 2000 | 0 | - | 4.08 | 21,331 |
| Movies by Year, 1970–1989 | 0 | - | 4.38 | 25,439 |
| 20th Century A-Z | 0 | - | 4.50 | 53,848 |
| 19th Century A-Z | 0 | - | 4.77 | 47,376 |
| 18th Century A-Z | 0 | - | 4.54 | 43,245 |
| Inventions by Country #1 | 0 | - | 4.47 | 55,100 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,687 |
| All Modern-Day Countries Ever Controlled by Slavic People | 0 | - | 4.18 | 28,668 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,418 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,897 |
| Geography of the British Empire | 0 | - | 4.48 | 39,747 |
| History of France | 0 | - | 4.61 | 57,315 |
| 1980s Celebrities by Picture #1 | 0 | - | 3.97 | 61,647 |
| Fresh Prince of Bel-Air Lyrics | 0 | - | 4.86 | 589,616 |
| Seinfeld Trivia | 0 | - | 4.57 | 35,196 |
| Main Friends Characters and Actors | 0 | - | 4.42 | 52,263 |
| Friends - Finish the Quote | 0 | - | 4.57 | 44,015 |
| 2000s Celebrities by Picture #1 | 0 | - | 3.93 | 102,460 |
| Characters from The Office | 0 | - | 4.48 | 46,333 |
| The Office Trivia #1 | 0 | - | 4.43 | 94,911 |
| 1960s Movie Trivia | 0 | - | 4.26 | 18,365 |
| 1930s Celebrities by Picture | 0 | - | 4.33 | 12,640 |
