| South America Map Quiz | 0 | - | 5.00 | 1,540,474 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,064 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 127,968 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,536 |
| Central American Countries | 0 | - | 4.98 | 154,933 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 145,634 |
| History of Mexico | 0 | - | 4.58 | 15,218 |
| United States Map Quiz | 0 | - | 4.98 | 4,139,991 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,119 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,092 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,645 |
| North America Map Quiz | 0 | - | 4.98 | 244,085 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,348 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,396 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,468 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,549 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,754 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,280 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,877 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,833 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,809 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,870 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,195 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,779 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 72,979 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,443 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,102 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,805 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,313 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,264 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,008 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,927 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,486 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,733 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,843 |
| States of Mexico | 0 | - | 4.95 | 173,071 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,695 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,813 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,341 |
| States of Brazil | 0 | - | 4.98 | 86,241 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,134 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 48,999 |
| Word Chain - South America | 0 | - | 4.51 | 23,756 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,070 |
| Name the English Monarchs | 0 | - | 4.92 | 497,471 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,279 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,649,590 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,143 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,979 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,848 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,788 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,039 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,410 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,032 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,621 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,760 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,305 |
| Name that Greek Letter | 0 | - | 4.94 | 321,460 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,423 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,186 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,368 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,895 |
| Famous People from South America | 0 | - | 4.15 | 21,772 |
| Countries Bordering Brazil | 0 | - | 4.96 | 130,952 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,258 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,365 |
| Old West History | 0 | - | 4.32 | 15,217 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,486 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,840 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,635 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,346 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,111 |
| History of Russia Quiz | 0 | - | 4.49 | 31,774 |
| The Trojan War | 0 | - | 4.83 | 39,400 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,379 |
| History of Italy | 0 | - | 4.55 | 31,800 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,987 |
| Roman Emperors | 0 | - | 4.95 | 118,321 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,466 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,963 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,360 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,770 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,967 |
| Australian Capitals | 0 | - | 4.92 | 62,586 |
| Belize Country Quiz | 0 | - | 4.85 | 20,782 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,579 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 23,916 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,033 |
| Territories of the United States | 0 | - | 4.79 | 52,107 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,353 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,457 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,693 |
| Name a Valid Answer - United States #1 | 0 | - | 4.63 | 93,386 |
| New York City Geography | 0 | - | 4.42 | 32,885 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,173 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,535 |
| Official European Union Languages | 0 | - | 4.97 | 236,378 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,615 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,101 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,033 |
| Ancient Greek Words | 0 | - | 4.92 | 110,564 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,094 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,613 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,098 |
| Countries by Founding Story | 0 | - | 4.95 | 76,461 |
| Independence from Whom | 0 | - | 4.99 | 209,516 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,601 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,945 |
| History of India | 0 | - | 4.61 | 21,266 |
| Africa Map Quiz | 0 | - | 5.00 | 2,102,990 |
| History of South Africa | 0 | - | 4.60 | 17,592 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,606 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,650 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,344 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,381 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 24,983 |
| U.S. History Multiple Choice #1 | 0 | - | 4.31 | 22,149 |
| U.S. History Multiple Choice #4 | 0 | - | 4.26 | 25,481 |
| Native American Tribes in the US | 0 | - | 4.70 | 25,252 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,476 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,919 |
| History of Austria | 0 | - | 4.70 | 17,738 |
| Geography of the French Empire | 0 | - | 4.48 | 26,916 |
| The French Revolution | 0 | - | 4.46 | 23,752 |
| History of France | 0 | - | 4.59 | 55,907 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,372 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,351 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,174 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,555 |
| The Vikings! | 0 | - | 4.45 | 28,236 |
| The Portuguese Empire | 0 | - | 4.54 | 11,981 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,154 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,713 |
| Geography of the British Empire | 0 | - | 4.48 | 39,464 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,398 |
| Asia Map Quiz | 0 | - | 4.99 | 906,057 |
| History of Iran | 0 | - | 4.65 | 16,259 |
| History of China | 0 | - | 4.37 | 56,648 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,136 |
| Countries of Africa | 0 | - | 5.00 | 2,505,079 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,740 |
| African East Coast | 0 | - | 4.96 | 94,948 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,820 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,726 |
| Australia Map Quiz | 0 | - | 4.94 | 342,267 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,645 |
| Largest Land Animals of the Americas | 0 | - | 4.38 | 20,190 |
| Pixelated Americas Map | 0 | - | 4.40 | 46,771 |
| Mexico Country Quiz | 0 | - | 4.49 | 71,933 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,306 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,176 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,456 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,044 |
| Brazil Country Quiz | 0 | - | 4.52 | 101,015 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,355 |
| Chile Country Quiz | 0 | - | 4.75 | 39,694 |
| Peru Country Quiz | 0 | - | 4.54 | 48,258 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,074 |
| American Inventions #1 | 0 | - | 3.63 | 31,455 |
| American Inventions #2 | 0 | - | 3.93 | 15,821 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,066 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,627 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,509 |
| 75 Americans Named John | 0 | - | 4.41 | 23,818 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,773 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,643 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,615 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,274 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,754 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,392 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 74,840 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,190 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,385 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 89,901 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,271 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,126 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 81,799 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,527 |
| Canadian Prime Ministers | 0 | - | 4.63 | 56,979 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,179 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,880 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,161 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,769 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,100 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,489 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,365 |
| The Only European Country ... | 0 | - | 4.91 | 213,551 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,353 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,743 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,756 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,710 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,915 |
| History of The Netherlands | 0 | - | 4.46 | 17,299 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,535 |
| Medieval English History | 0 | - | 4.53 | 43,295 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,336 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,053 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.18 | 15,483 |
| Ottoman Empire Quiz | 0 | - | 4.46 | 17,002 |
| Chinese Inventions | 0 | - | 4.30 | 33,712 |
