| South America Map Quiz | 0 | - | 5.00 | 1,478,496 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 99,190 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 116,258 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 878,017 |
| Central American Countries | 0 | - | 4.98 | 146,624 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 108,307 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 122,456 |
| History of Mexico | 0 | - | 4.57 | 14,610 |
| United States Map Quiz | 0 | - | 4.98 | 4,026,710 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 109,701 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 137,561 |
| Countries of North America Quiz | 0 | - | 5.00 | 938,489 |
| North America Map Quiz | 0 | - | 4.98 | 218,770 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 110,371 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 605,531 |
| Most Spoken Languages in Canada | 0 | - | 4.90 | 50,513 |
| Islands of the Galápagos | 0 | - | 4.53 | 4,603 |
| North American Capitals - Map Quiz | 0 | - | 4.89 | 51,508 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 89,592 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 53,984 |
| U.S. State Border Crossings | 0 | - | 4.96 | 85,443 |
| U.S. Citizenship Test Questions | 0 | - | 4.84 | 229,451 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.86 | 69,498 |
| Cities and Towns of Massachusetts | 0 | - | 4.91 | 67,112 |
| Canada Provinces and Territories | 0 | - | 4.99 | 307,284 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.70 | 55,898 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 140,951 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 68,788 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.94 | 55,866 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 64,200 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 50,930 |
| States of the German Confederation in 1848 | 0 | - | 4.85 | 28,864 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 99,229 |
| American Countries With No Atlantic Coastline | 0 | - | 4.91 | 76,075 |
| States of Mexico | 0 | - | 4.93 | 154,869 |
| Mexico States Map Quiz | 0 | - | 4.82 | 96,670 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.89 | 45,737 |
| Brazil States Map Quiz | 0 | - | 4.84 | 43,499 |
| States of Brazil | 0 | - | 4.97 | 76,612 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 107,991 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 47,688 |
| Word Chain - South America | 0 | - | 4.50 | 22,969 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.88 | 24,585 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 505,034 |
| English Monarchs Quiz | 0 | - | 4.90 | 470,408 |
| Colombia Country Quiz | 0 | - | 4.89 | 37,726 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,388,627 |
| Deadliest U.S. Wars | 0 | - | 4.84 | 165,136 |
| Embarrassing Chapters in US History | 0 | - | 4.19 | 32,226 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 78,089 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.94 | 152,306 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 172,599 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 118,402 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.83 | 66,163 |
| Top 10 Newest U.S. States | 0 | - | 4.83 | 82,229 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.83 | 61,047 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 609,421 |
| Prime Ministers of the UK | 0 | - | 4.95 | 406,498 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 255,859 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 50,910 |
| Famous People from South America | 0 | - | 4.15 | 20,656 |
| Countries Bordering Brazil | 0 | - | 4.96 | 127,451 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 47,359 |
| Most-Spoken Languages of the United States | 0 | - | 4.44 | 178,910 |
| Old West History | 0 | - | 4.30 | 14,988 |
| Life of Benjamin Franklin | 0 | - | 4.20 | 6,359 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,336 |
| Canada Geography Trivia | 0 | - | 4.80 | 46,129 |
| Save Europeans by Guessing Countries | 0 | - | 4.87 | 188,590 |
| The Trojan War | 0 | - | 4.81 | 37,395 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.86 | 101,000 |
| Ancient Roman Trivia #1 | 0 | - | 4.83 | 74,374 |
| Roman Emperors | 0 | - | 4.96 | 107,843 |
| Geography of the Dutch Empire | 0 | - | 4.68 | 33,351 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 75,945 |
| Invasions of Great Britain | 0 | - | 4.50 | 57,421 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 93,951 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 265,674 |
| Australian Capitals | 0 | - | 4.92 | 61,744 |
| Pixelated Americas Map | 0 | - | 4.42 | 44,256 |
| Belize Country Quiz | 0 | - | 4.87 | 19,760 |
| Largest Caribbean Islands | 0 | - | 4.06 | 15,952 |
| Saintly Islands of the Caribbean | 0 | - | 4.31 | 23,014 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 18,037 |
| Territories of the United States | 0 | - | 4.77 | 50,269 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.80 | 36,910 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 167,368 |
| Major non-NATO U.S. Allies | 0 | - | 4.46 | 40,300 |
| Name a Valid Answer - United States #1 | 0 | - | 4.64 | 89,830 |
| Canada Immigration by Country | 0 | - | 4.51 | 59,585 |
| Count to 10 in Europe: Pro | 0 | - | 4.84 | 64,377 |
| Official European Union Languages | 0 | - | 4.98 | 225,614 |
| European Countries in their Native Language | 0 | - | 4.99 | 149,980 |
| Europe Map Quiz | 0 | - | 5.00 | 4,502,878 |
| Olympian Gods Quiz | 0 | - | 4.96 | 469,011 |
| Name that Greek Letter | 0 | - | 4.94 | 308,440 |
| Ancient Greek Words | 0 | - | 4.92 | 104,102 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 112,314 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 84,819 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 42,700 |
| Countries by Founding Story | 0 | - | 4.94 | 71,728 |
| Independence from Whom | 0 | - | 4.99 | 197,300 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 121,784 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,765 |
| History of China | 0 | - | 4.38 | 53,521 |
| History of India | 0 | - | 4.60 | 20,360 |
| Africa Map Quiz | 0 | - | 5.00 | 2,016,718 |
| History of South Africa | 0 | - | 4.59 | 17,057 |
| Oceania Map Quiz | 0 | - | 4.98 | 597,816 |
| Dominica Country Quiz | 0 | - | 4.82 | 18,719 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 408,144 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 366,805 |
| U.S. History Multiple Choice #2 | 0 | - | 4.36 | 24,479 |
| U.S. History Multiple Choice #1 | 0 | - | 4.29 | 21,692 |
| U.S. History Multiple Choice #3 | 0 | - | 4.40 | 23,991 |
| U.S. History Multiple Choice #4 | 0 | - | 4.26 | 24,824 |
| Native American Tribes in the US | 0 | - | 4.74 | 23,953 |
| U.S. History Multiple Choice #5 | 0 | - | 4.32 | 11,003 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 405,415 |
| History of Russia Quiz | 0 | - | 4.47 | 30,916 |
| History of Austria | 0 | - | 4.69 | 17,012 |
| Geography of the French Empire | 0 | - | 4.51 | 26,064 |
| The French Revolution | 0 | - | 4.45 | 22,663 |
| History of France Quiz | 0 | - | 4.56 | 41,367 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 22,663 |
| History of Ireland Quiz | 0 | - | 4.44 | 20,058 |
| History of Italy | 0 | - | 4.50 | 30,856 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 414,848 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 52,077 |
| The Vikings! | 0 | - | 4.45 | 27,679 |
| The Portuguese Empire | 0 | - | 4.54 | 11,634 |
| Wives of King Henry VIII | 0 | - | 4.54 | 52,266 |
| Countries the UK Declared War On | 0 | - | 4.56 | 116,827 |
| Geography of the British Empire | 0 | - | 4.51 | 38,196 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,387,092 |
| Asia Map Quiz | 0 | - | 4.99 | 841,750 |
| History of Iran Quiz | 0 | - | 4.63 | 15,601 |
| Chinese Inventions | 0 | - | 4.29 | 33,097 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.64 | 53,526 |
| Countries of Africa | 0 | - | 5.00 | 2,318,063 |
| African East Coast | 0 | - | 4.96 | 89,194 |
| Western Africa Map Quiz | 0 | - | 4.98 | 66,626 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 44,731 |
| Australia Map Quiz | 0 | - | 4.94 | 331,460 |
| Largest Land Animals of the Americas | 0 | - | 4.36 | 19,764 |
| Mexico Country Quiz | 0 | - | 4.48 | 69,085 |
| Mexico Cities Map Quiz | 0 | - | 4.75 | 32,027 |
| South American Geography Quiz #2 | 0 | - | 4.64 | 38,077 |
| Argentina Country Quiz | 0 | - | 4.52 | 54,625 |
| Brazil Country Quiz | 0 | - | 4.57 | 96,592 |
| Brazil Cities Map Quiz | 0 | - | 4.61 | 35,029 |
| Chile Country Quiz | 0 | - | 4.80 | 37,617 |
| Peru Country Quiz | 0 | - | 4.52 | 46,026 |
| U.S. Federal Holidays | 0 | - | 4.30 | 97,496 |
| American Inventions #1 | 0 | - | 3.65 | 31,198 |
| American Inventions #2 | 0 | - | 3.91 | 15,584 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 60,558 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,163 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.19 | 51,629 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 39,090 |
| Branches of the U.S. Military | 0 | - | 4.41 | 22,582 |
| Name a Valid U.S. President #1 | 0 | - | 4.91 | 177,467 |
| Play-Doh Presidents | 0 | - | 5.00 | 78,186 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 96,783 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 72,998 |
| Top 10 Most Asian U.S. States | 0 | - | 4.79 | 72,439 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 79,937 |
| Top 10 Least Obese U.S. States | 0 | - | 4.74 | 71,478 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.47 | 72,523 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 50,401 |
| Top 10 Most White U.S. States | 0 | - | 4.52 | 76,514 |
| Top 10 Most German U.S. States | 0 | - | 4.49 | 56,619 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 38,832 |
| Canadian Prime Ministers Quiz | 0 | - | 4.63 | 53,218 |
| Canadian Geography on the Map | 0 | - | 4.57 | 25,082 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 200,747 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.93 | 89,007 |
| Countries That Use the Euro | 0 | - | 4.92 | 73,277 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 348,178 |
| Europe Geography Decoder | 0 | - | 4.85 | 66,282 |
| 10 Easternmost Countries in Europe | 0 | - | 4.88 | 102,157 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.83 | 40,250 |
| The Only European Country ... | 0 | - | 4.92 | 194,142 |
| Ancient Greek Trivia | 0 | - | 4.55 | 64,962 |
| Figures from Greek Mythology | 0 | - | 4.92 | 174,687 |
| Countries Italy Declared War On | 0 | - | 4.75 | 41,479 |
| History of The Netherlands | 0 | - | 4.44 | 16,424 |
| Countries that Beat Switzerland | 0 | - | 4.87 | 39,767 |
| Medieval English History | 0 | - | 4.53 | 42,057 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 87,627 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,329,551 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.18 | 14,943 |
| Ottoman Empire Quiz | 0 | - | 4.43 | 16,315 |
| Countries of the World in 1900 | 0 | - | 4.87 | 74,061 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 180,885 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 137,546 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 150,685 |
| Historical City to Country | 0 | - | 4.83 | 74,937 |
| Countries by Former Name | 0 | - | 4.99 | 118,965 |
| Cities by Former Name | 0 | - | 4.84 | 87,062 |
