| South America Map Quiz | 0 | - | 5.00 | 1,556,085 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,435 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,574 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 904,819 |
| Central American Countries | 0 | - | 4.98 | 157,256 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,541 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 150,276 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,208 |
| History of Mexico | 0 | - | 4.52 | 15,360 |
| United States Map Quiz | 0 | - | 4.98 | 4,170,463 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,931 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,745 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,030,620 |
| North America Map Quiz | 0 | - | 4.98 | 251,823 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,957 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,886 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,329 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,539 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,413 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,795 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,781 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 95,109 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,942 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,856 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,768 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,911 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,944 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,235 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,734 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,284 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,189 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,679 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,774 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,512 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,776 |
| States of Mexico | 0 | - | 4.96 | 178,068 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,564 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,740 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,547 |
| States of Brazil | 0 | - | 4.97 | 89,605 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,668 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,454 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,372 |
| Word Chain - South America | 0 | - | 4.51 | 24,001 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,290 |
| Name the English Monarchs | 0 | - | 4.91 | 506,100 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,801 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,975 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,723,767 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,713 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,189 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,027 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,661 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,171 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,645 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,798 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,624 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,959 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,547 |
| Name that Greek Letter | 0 | - | 4.93 | 324,883 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,614 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,341 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,832 |
| Prime Ministers of the UK | 0 | - | 4.95 | 442,060 |
| Famous People from South America | 0 | - | 4.15 | 22,089 |
| Countries Bordering Brazil | 0 | - | 4.96 | 132,214 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,868 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 222,339 |
| Old West History | 0 | - | 4.34 | 15,297 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,534 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,982 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,775 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,675 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,456 |
| History of Russia Quiz | 0 | - | 4.47 | 31,999 |
| The Trojan War | 0 | - | 4.83 | 39,966 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,870 |
| History of Italy | 0 | - | 4.55 | 32,138 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,561 |
| Roman Emperors | 0 | - | 4.95 | 121,101 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,810 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,413 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,080 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,035 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,563 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,263 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,738 |
| Australian Capitals | 0 | - | 4.92 | 62,826 |
| Belize Country Quiz | 0 | - | 4.85 | 21,077 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,777 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 24,137 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,295 |
| Territories of the United States | 0 | - | 4.80 | 52,605 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,873 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 176,050 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,503 |
| Name a Valid Answer - United States #1 | 0 | - | 4.62 | 94,364 |
| New York City Geography | 0 | - | 4.43 | 33,182 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,856 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,678 |
| Official European Union Languages | 0 | - | 4.97 | 239,682 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,580 |
| Europe Map Quiz | 0 | - | 5.00 | 4,785,775 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,538 |
| Ancient Greek Words | 0 | - | 4.93 | 112,396 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,424 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,047 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,109 |
| Countries by Founding Story | 0 | - | 4.95 | 77,764 |
| Independence from Whom | 0 | - | 4.99 | 212,957 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,362 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,816 |
| History of South Africa | 0 | - | 4.60 | 17,757 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,850 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,932 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,337 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,476 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 25,118 |
| U.S. History Multiple Choice #1 | 0 | - | 4.29 | 22,282 |
| U.S. History Multiple Choice #4 | 0 | - | 4.24 | 25,660 |
| Native American Tribes in the US | 0 | - | 4.74 | 25,722 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,589 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,659 |
| History of Austria | 0 | - | 4.70 | 17,969 |
| Geography of the French Empire | 0 | - | 4.45 | 27,210 |
| The French Revolution | 0 | - | 4.47 | 24,138 |
| History of France | 0 | - | 4.61 | 57,570 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,556 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,240 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,577 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,487 |
| The Vikings! | 0 | - | 4.46 | 28,400 |
| The Portuguese Empire | 0 | - | 4.58 | 12,100 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,452 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,207 |
| Geography of the British Empire | 0 | - | 4.48 | 39,840 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,112 |
| Asia Map Quiz | 0 | - | 4.99 | 924,517 |
| History of Iran | 0 | - | 4.66 | 16,417 |
| History of China | 0 | - | 4.35 | 57,541 |
| History of India | 0 | - | 4.62 | 21,506 |
| Africa Map Quiz | 0 | - | 5.00 | 2,127,848 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,408 |
| Australia Map Quiz | 0 | - | 4.95 | 346,056 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,185 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,317 |
| Pixelated Americas Map | 0 | - | 4.39 | 47,406 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,726 |
| South American Geography Quiz #2 | 0 | - | 4.41 | 43,923 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,875 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,786 |
| Brazil Country Quiz | 0 | - | 4.52 | 102,326 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,828 |
| Chile Country Quiz | 0 | - | 4.75 | 40,266 |
| Ecuador Country Quiz | 0 | - | 4.60 | 31,998 |
| Peru Country Quiz | 0 | - | 4.54 | 48,895 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,620 |
| American Inventions #1 | 0 | - | 3.62 | 31,533 |
| American Inventions #2 | 0 | - | 3.93 | 15,890 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,440 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,769 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,724 |
| 75 Americans Named John | 0 | - | 4.41 | 23,968 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.12 | 41,169 |
| Name a Valid U.S. President #1 | 0 | - | 4.90 | 193,680 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,834 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,909 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,210 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,820 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,448 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,502 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,850 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,337 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,246 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,576 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 83,021 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,247 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 47,076 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,889 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,426 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,807 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,886 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,630 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,091 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,285 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,994 |
| The Only European Country ... | 0 | - | 4.91 | 218,801 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,411 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,214 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,034 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,952 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,707 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,618 |
| History of The Netherlands | 0 | - | 4.46 | 17,545 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,040 |
| Medieval English History | 0 | - | 4.53 | 43,643 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,870 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,985 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,606 |
| Chinese Inventions | 0 | - | 4.30 | 33,855 |
