| South America Map Quiz | 0 | - | 5.00 | 1,541,542 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,201 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,289 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,918 |
| Central American Countries | 0 | - | 4.98 | 155,107 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 146,024 |
| History of Mexico | 0 | - | 4.58 | 15,235 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,567 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,168 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,197 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,012,305 |
| North America Map Quiz | 0 | - | 4.98 | 244,625 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,385 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,105 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,206 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,650 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,755 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,343 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,025 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,928 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,041 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,983 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,394 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,905 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,101 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,524 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,167 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,011 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,476 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,480 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,167 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,066 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,546 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,953 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,946 |
| States of Mexico | 0 | - | 4.95 | 173,448 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,850 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,018 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,413 |
| States of Brazil | 0 | - | 4.98 | 86,441 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,374 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,027 |
| Word Chain - South America | 0 | - | 4.51 | 23,768 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,501 |
| Name the English Monarchs | 0 | - | 4.92 | 498,180 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,352 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,656,840 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,327 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,997 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,930 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,913 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,096 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,521 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,084 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,677 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,863 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,226 |
| Name that Greek Letter | 0 | - | 4.94 | 321,771 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,555 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,856 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,618 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,971 |
| Famous People from South America | 0 | - | 4.15 | 21,792 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,100 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,296 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,863 |
| Old West History | 0 | - | 4.33 | 15,226 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,494 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,856 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,648 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,377 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,693 |
| History of Russia Quiz | 0 | - | 4.49 | 31,798 |
| The Trojan War | 0 | - | 4.83 | 39,452 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,619 |
| History of Italy | 0 | - | 4.55 | 31,829 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,079 |
| Roman Emperors | 0 | - | 4.95 | 118,552 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,491 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,989 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,519 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,879 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,173 |
| Australian Capitals | 0 | - | 4.92 | 62,596 |
| Belize Country Quiz | 0 | - | 4.85 | 20,811 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,594 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 23,933 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,062 |
| Territories of the United States | 0 | - | 4.79 | 52,160 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,396 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,601 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,762 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,468 |
| New York City Geography | 0 | - | 4.42 | 32,949 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,249 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,606 |
| Official European Union Languages | 0 | - | 4.97 | 236,963 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,730 |
| Europe Map Quiz | 0 | - | 5.00 | 4,732,824 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,545 |
| Ancient Greek Words | 0 | - | 4.92 | 110,739 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,384 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,091 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,204 |
| Countries by Founding Story | 0 | - | 4.95 | 76,575 |
| Independence from Whom | 0 | - | 4.99 | 209,771 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,815 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,023 |
| History of India | 0 | - | 4.61 | 21,293 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,923 |
| History of South Africa | 0 | - | 4.60 | 17,607 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,620 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,678 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,922 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,674 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 24,991 |
| U.S. History Multiple Choice #1 | 0 | - | 4.31 | 22,158 |
| U.S. History Multiple Choice #4 | 0 | - | 4.26 | 25,493 |
| Native American Tribes in the US | 0 | - | 4.72 | 25,269 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,485 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,393 |
| History of Austria | 0 | - | 4.70 | 17,759 |
| Geography of the French Empire | 0 | - | 4.48 | 26,942 |
| The French Revolution | 0 | - | 4.46 | 23,790 |
| History of France | 0 | - | 4.59 | 56,124 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,389 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,530 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,711 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,643 |
| The Vikings! | 0 | - | 4.46 | 28,250 |
| The Portuguese Empire | 0 | - | 4.54 | 11,996 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,199 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,839 |
| Geography of the British Empire | 0 | - | 4.48 | 39,495 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,200 |
| Asia Map Quiz | 0 | - | 4.99 | 907,457 |
| History of Iran | 0 | - | 4.65 | 16,275 |
| History of China | 0 | - | 4.37 | 56,710 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,185 |
| Countries of Africa | 0 | - | 5.00 | 2,509,274 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,859 |
| African East Coast | 0 | - | 4.96 | 95,088 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,987 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,827 |
| Australia Map Quiz | 0 | - | 4.94 | 342,582 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,691 |
| Largest Land Animals of the Americas | 0 | - | 4.38 | 20,198 |
| Pixelated Americas Map | 0 | - | 4.40 | 46,827 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,002 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,319 |
| South American Geography Quiz #2 | 0 | - | 4.62 | 39,204 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,475 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,106 |
| Brazil Country Quiz | 0 | - | 4.52 | 101,134 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,378 |
| Chile Country Quiz | 0 | - | 4.75 | 39,749 |
| Peru Country Quiz | 0 | - | 4.54 | 48,325 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,111 |
| American Inventions #1 | 0 | - | 3.63 | 31,464 |
| American Inventions #2 | 0 | - | 3.93 | 15,829 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,097 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,632 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,526 |
| 75 Americans Named John | 0 | - | 4.41 | 23,829 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,806 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,962 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,705 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,333 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,799 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,420 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 74,899 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,220 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,429 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,001 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,382 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,164 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 81,896 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,598 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,066 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,197 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,239 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,235 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,102 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,426 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,557 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,663 |
| The Only European Country ... | 0 | - | 4.91 | 213,979 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,640 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,786 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,776 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,061 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,985 |
| History of The Netherlands | 0 | - | 4.46 | 17,320 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,577 |
| Medieval English History | 0 | - | 4.53 | 43,331 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,529 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,380 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,494 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 17,031 |
| Chinese Inventions | 0 | - | 4.30 | 33,728 |
