| South America Map Quiz | 0 | - | 5.00 | 1,540,486 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,064 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,813 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,345 |
| States of Brazil | 0 | - | 4.98 | 86,241 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 127,975 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,541 |
| States of Mexico | 0 | - | 4.95 | 173,080 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,698 |
| Central American Countries | 0 | - | 4.98 | 154,936 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 145,645 |
| History of Mexico | 0 | - | 4.58 | 15,218 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,044 |
| Flags of North and South America | 0 | - | 4.99 | 365,943 |
| South American Physical Geography | 0 | - | 4.58 | 18,263 |
| Belize Country Quiz | 0 | - | 4.85 | 20,782 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,033 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,676 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,415 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,475 |
| The Only American Country ... | 0 | - | 4.92 | 120,675 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,277 |
| South America Capitals Quiz | 0 | - | 5.00 | 476,898 |
| Guyana Country Quiz | 0 | - | 4.49 | 22,562 |
| Venezuela Country Quiz | 0 | - | 4.50 | 30,365 |
| Paraguay Country Quiz | 0 | - | 4.53 | 25,057 |
| Bolivia Country Quiz | 0 | - | 4.63 | 25,991 |
| Suriname Country Quiz | 0 | - | 4.60 | 19,651 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,650 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,877 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,812 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,874 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,197 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,784 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 72,982 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,443 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,806 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,315 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,009 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,754 |
| South American Cities on the Map | 0 | - | 4.57 | 35,231 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,281 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,101 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,103 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,489 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,735 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,018 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,844 |
| Word Chain - South America | 0 | - | 4.51 | 23,757 |
| Name the U.S. National Parks | 0 | - | 4.85 | 58,268 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,554 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,051 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,059 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,488 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,556 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,139 |
| Name the English Monarchs | 0 | - | 4.92 | 497,480 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,046 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,052 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,279 |
| Jamaica Country Quiz | 0 | - | 4.58 | 34,835 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,325 |
| Pixelated United States Map | 0 | - | 4.89 | 93,360 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,328 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,747 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,649,728 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,146 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,980 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,613 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,249 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,301 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,519 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,792 |
| U.S. States By Population | 0 | - | 4.92 | 152,278 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,288 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,791 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,848 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,463 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,723 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,796 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,790 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,041 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,412 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,035 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,622 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,764 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,267 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,086 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,323 |
| Name that Greek Letter | 0 | - | 4.94 | 321,461 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,198 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,370 |
| Colonies of Africa with a Map | 0 | - | 4.77 | 53,898 |
| Famous People from South America | 0 | - | 4.15 | 21,773 |
| Countries Bordering Brazil | 0 | - | 4.96 | 130,956 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,258 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,413 |
| 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 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,000 |
| U.S. States with the Most Immigrants | 0 | - | 4.84 | 81,883 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,802 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,117 |
| 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 | 110,385 |
| History of Italy | 0 | - | 4.55 | 31,800 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,988 |
| Roman Emperors | 0 | - | 4.95 | 118,334 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,467 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,964 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,360 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,772 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,969 |
| Mexican Foods | 0 | - | 4.07 | 14,602 |
| South America A-Z | 0 | - | 4.13 | 10,834 |
| El Salvador Country Quiz | 0 | - | 4.62 | 31,447 |
| Guatemala Country Quiz | 0 | - | 4.63 | 25,187 |
| Honduras Country Quiz | 0 | - | 4.52 | 23,659 |
| Nicaragua Country Quiz | 0 | - | 4.62 | 26,342 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,579 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 23,917 |
| Antigua and Barbuda Country Quiz | 0 | - | 4.66 | 21,890 |
| Barbados Country Quiz | 0 | - | 4.78 | 19,633 |
| Territories of the United States | 0 | - | 4.79 | 52,108 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,356 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,458 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,694 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,359 |
| New York City Geography | 0 | - | 4.42 | 32,887 |
| History of Pennsylvania | 0 | - | 4.16 | 7,084 |
| History of Virginia | 0 | - | 4.31 | 11,553 |
| Events in U.S. History | 0 | - | 4.40 | 28,453 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,174 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,215 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,071 |
| Ancient Greek Words | 0 | - | 4.92 | 110,569 |
| History of India | 0 | - | 4.61 | 21,266 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,023 |
| History of South Africa | 0 | - | 4.60 | 17,592 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,620 |
| Australian Capitals | 0 | - | 4.92 | 62,586 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,273 |
| Grenada Country Quiz | 0 | - | 4.62 | 18,762 |
| Saint Kitts and Nevis Country Quiz | 0 | - | 4.57 | 18,599 |
| Trinidad and Tobago Country Quiz | 0 | - | 4.61 | 21,999 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,235 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,461 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,068 |
| United States Country Quiz | 0 | - | 4.43 | 100,491 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,581 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,387 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,646 |
| The Life of Thomas Edison | 0 | - | 4.03 | 4,891 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 24,984 |
| U.S. History Multiple Choice #1 | 0 | - | 4.31 | 22,149 |
| U.S. History Multiple Choice #4 | 0 | - | 4.26 | 25,481 |
| Canada Country Quiz | 0 | - | 4.54 | 131,647 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,564 |
| Canada A-Z | 0 | - | 4.73 | 32,630 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,536 |
| Official European Union Languages | 0 | - | 4.97 | 236,383 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,616 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,921 |
| History of Austria | 0 | - | 4.70 | 17,738 |
| Geography of the French Empire | 0 | - | 4.48 | 26,916 |
| The French Revolution | 0 | - | 4.46 | 23,753 |
| History of France | 0 | - | 4.59 | 55,911 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,372 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,182 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,556 |
| The Vikings! | 0 | - | 4.45 | 28,236 |
| The Portuguese Empire | 0 | - | 4.54 | 11,981 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,156 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,716 |
| Geography of the British Empire | 0 | - | 4.48 | 39,464 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,412 |
| Asia Map Quiz | 0 | - | 4.99 | 906,084 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,611 |
| History of Iran | 0 | - | 4.65 | 16,259 |
| History of China | 0 | - | 4.37 | 56,648 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,617 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,102 |
| Countries by Founding Story | 0 | - | 4.95 | 76,462 |
| Independence from Whom | 0 | - | 4.99 | 209,522 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,606 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,946 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.68 | 55,137 |
| Countries of Africa | 0 | - | 5.00 | 2,505,147 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,743 |
| African East Coast | 0 | - | 4.96 | 94,949 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,827 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,726 |
| Australia Map Quiz | 0 | - | 4.94 | 342,270 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,645 |
| Pixelated Americas Map | 0 | - | 4.40 | 46,771 |
| Hispanic Last Names in the U.S. | 0 | - | 4.30 | 54,606 |
| Mexico Country Quiz | 0 | - | 4.49 | 71,934 |
