| South America Map Quiz | 0 | - | 5.00 | 1,408,653 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 92,927 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 104,643 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 846,607 |
| Central American Countries | 0 | - | 4.98 | 137,668 |
| Caribbean Countries and Territories | 0 | - | 4.83 | 103,393 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 115,242 |
| History of Mexico | 0 | - | 4.55 | 13,773 |
| United States Map Quiz | 0 | - | 4.98 | 3,877,889 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 106,367 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 131,170 |
| Countries of North America Quiz | 0 | - | 5.00 | 867,489 |
| North America Map Quiz | 0 | - | 4.98 | 193,895 |
| Third Most Common Language by U.S. State | 0 | - | 4.90 | 105,974 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 572,733 |
| Most Spoken Languages in Canada | 0 | - | 4.82 | 46,270 |
| Islands of the Galápagos | 0 | - | 4.51 | 4,377 |
| North American Capitals - Map Quiz | 0 | - | 4.91 | 46,284 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 84,429 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 45,647 |
| U.S. State Border Crossings | 0 | - | 4.96 | 81,353 |
| U.S. Citizenship Test Questions | 0 | - | 4.86 | 220,330 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.82 | 32,315 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 64,528 |
| Cities and Towns of Massachusetts | 0 | - | 4.89 | 59,045 |
| Canada Provinces and Territories | 0 | - | 4.99 | 286,336 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,388 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 132,111 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 61,478 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.93 | 47,896 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 57,583 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 45,633 |
| States of the German Confederation in 1848 | 0 | - | 4.83 | 26,026 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 98,123 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 92,245 |
| American Countries With No Atlantic Coastline | 0 | - | 4.90 | 72,516 |
| States of Mexico | 0 | - | 4.94 | 137,949 |
| Mexico States Map Quiz | 0 | - | 4.84 | 89,276 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.89 | 38,552 |
| Brazil States Map Quiz | 0 | - | 4.84 | 38,845 |
| States of Brazil | 0 | - | 4.96 | 67,036 |
| English Monarchs Quiz | 0 | - | 4.91 | 442,317 |
| American Pacific Coast | 0 | - | 4.79 | 37,246 |
| Word Chain - South America | 0 | - | 4.48 | 21,780 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.84 | 20,958 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 453,386 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.82 | 9,581 |
| Prime Ministers of the UK | 0 | - | 4.95 | 376,900 |
| Colombia Country Quiz | 0 | - | 4.92 | 34,339 |
| Deadliest U.S. Wars | 0 | - | 4.82 | 156,679 |
| 10 Northernmost U.S. States | 0 | - | 4.86 | 59,573 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 144,171 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 166,560 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 98,435 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 578,900 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 71,223 |
| Roman Emperors | 0 | - | 4.95 | 94,569 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 31,915 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 64,903 |
| Invasions of Great Britain | 0 | - | 4.48 | 55,107 |
| The United States... or the United Kingdom? | 0 | - | 4.89 | 89,391 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 252,447 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 242,680 |
| Colonies of Africa with a Map | 0 | - | 4.80 | 47,812 |
| Famous People from South America | 0 | - | 4.05 | 8,776 |
| Countries Bordering Brazil | 0 | - | 4.96 | 123,107 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 44,798 |
| Most-Spoken Languages of the United States | 0 | - | 4.45 | 162,650 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,128,430 |
| Old West History | 0 | - | 4.28 | 14,758 |
| Life of Benjamin Franklin | 0 | - | 4.18 | 6,204 |
| American Revolution - Multiple Choice | 0 | - | 4.31 | 18,690 |
| Canada Geography Trivia | 0 | - | 4.80 | 44,436 |
| Save Europeans by Guessing Countries | 0 | - | 4.85 | 162,871 |
| The Trojan War | 0 | - | 4.81 | 35,589 |
| Australian Capitals | 0 | - | 4.90 | 52,913 |
| Pixelated Americas Map | 0 | - | 4.41 | 41,430 |
| Belize Country Quiz | 0 | - | 4.88 | 18,526 |
| Largest Caribbean Islands | 0 | - | 4.01 | 15,272 |
| Saintly Islands of the Caribbean | 0 | - | 4.27 | 22,087 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.87 | 16,879 |
| Territories of the United States | 0 | - | 4.76 | 48,160 |
| Most Mentioned Enemies of the USA | 0 | - | 4.79 | 158,330 |
| Major non-NATO U.S. Allies | 0 | - | 4.43 | 33,093 |
| Name a Valid Answer - United States #1 | 0 | - | 4.70 | 84,577 |
| Embarrassing Chapters in US History | 0 | - | 4.15 | 31,310 |
| Canada Immigration by Country | 0 | - | 4.52 | 56,682 |
| Official European Union Languages | 0 | - | 4.98 | 198,517 |
| European Countries in their Native Language | 0 | - | 4.99 | 142,745 |
| Europe Map Quiz | 0 | - | 5.00 | 4,248,724 |
| Olympian Gods Quiz | 0 | - | 4.96 | 454,505 |
| Name that Greek Letter | 0 | - | 4.94 | 293,817 |
| Ancient Greek Words | 0 | - | 4.90 | 96,027 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 76,408 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 39,263 |
| Countries by Founding Story | 0 | - | 4.92 | 54,008 |
| Independence from Whom | 0 | - | 4.99 | 182,570 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 111,634 |
| Most Recently-Settled Countries | 0 | - | 4.91 | 48,537 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 395,835 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 47,915 |
| The Vikings! | 0 | - | 4.44 | 26,997 |
| The Portuguese Empire | 0 | - | 4.54 | 11,280 |
| Wives of King Henry VIII | 0 | - | 4.53 | 44,456 |
| Countries the UK Declared War On | 0 | - | 4.57 | 110,775 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,332,990 |
| Asia Map Quiz | 0 | - | 4.99 | 772,189 |
| History of Iran Quiz | 0 | - | 4.63 | 15,035 |
| History of China | 0 | - | 4.39 | 49,820 |
| History of India | 0 | - | 4.52 | 19,060 |
| Africa Map Quiz | 0 | - | 5.00 | 1,922,982 |
| History of South Africa | 0 | - | 4.59 | 16,444 |
| Oceania Map Quiz | 0 | - | 4.97 | 561,545 |
| Dominica Country Quiz | 0 | - | 4.82 | 17,561 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 391,312 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 350,459 |
| U.S. History Multiple Choice #2 | 0 | - | 4.36 | 23,843 |
| U.S. History Multiple Choice #1 | 0 | - | 4.28 | 21,089 |
| U.S. History Multiple Choice #3 | 0 | - | 4.39 | 23,262 |
| U.S. History Multiple Choice #4 | 0 | - | 4.24 | 23,949 |
| Native American Tribes in the US | 0 | - | 4.71 | 22,804 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 381,461 |
| History of Russia Quiz | 0 | - | 4.48 | 29,716 |
| History of Austria | 0 | - | 4.68 | 16,261 |
| Geography of the French Empire | 0 | - | 4.50 | 24,970 |
| The French Revolution | 0 | - | 4.44 | 21,778 |
| History of France Quiz | 0 | - | 4.55 | 39,450 |
| History of Ireland Quiz | 0 | - | 4.43 | 18,757 |
| History of Italy | 0 | - | 4.49 | 29,627 |
| History of The Netherlands | 0 | - | 4.42 | 15,618 |
| Countries that Beat Switzerland | 0 | - | 4.85 | 37,217 |
| Medieval English History | 0 | - | 4.52 | 40,522 |
| South and Central Asia Map Quiz | 0 | - | 4.92 | 78,457 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,272,214 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 14,413 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 15,529 |
| Chinese Inventions | 0 | - | 4.26 | 32,500 |
| The Life of Gandhi | 0 | - | 4.42 | 12,526 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.57 | 51,352 |
| Countries of Africa | 0 | - | 5.00 | 2,136,282 |
| African East Coast | 0 | - | 4.97 | 83,133 |
| Western Africa Map Quiz | 0 | - | 4.97 | 59,814 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 39,525 |
| Australia Map Quiz | 0 | - | 4.94 | 317,030 |
| Largest Land Animals of the Americas | 0 | - | 4.36 | 19,328 |
| Mexico Country Quiz | 0 | - | 4.48 | 65,832 |
| South American Geography Quiz #2 | 0 | - | 4.70 | 36,806 |
| Argentina Country Quiz | 0 | - | 4.51 | 51,729 |
| Brazil Country Quiz | 0 | - | 4.57 | 91,035 |
| Brazil Cities Map Quiz | 0 | - | 4.60 | 33,423 |
| Chile Country Quiz | 0 | - | 4.80 | 35,055 |
| Peru Country Quiz | 0 | - | 4.54 | 43,327 |
| U.S. Federal Holidays | 0 | - | 4.29 | 95,315 |
| American Inventions #1 | 0 | - | 3.67 | 30,988 |
| American Inventions #2 | 0 | - | 3.85 | 15,382 |
| Top U.S. Cash Crops | 0 | - | 4.40 | 58,555 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.46 | 13,685 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.16 | 50,083 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.07 | 37,146 |
| Name a Valid U.S. President #1 | 0 | - | 4.93 | 164,554 |
| Play-Doh Presidents | 0 | - | 5.00 | 73,706 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.47 | 93,031 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.79 | 56,058 |
| Top 10 Most African-American U.S. States | 0 | - | 4.47 | 61,187 |
| Top 10 Newest U.S. States | 0 | - | 4.80 | 67,601 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 61,216 |
| Top 10 Most Obese U.S. States | 0 | - | 4.50 | 64,636 |
| Top 10 Least Obese U.S. States | 0 | - | 4.79 | 67,373 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.51 | 63,988 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.44 | 47,631 |
| Top 10 Most White U.S. States | 0 | - | 4.52 | 54,974 |
| Top 10 Most German U.S. States | 0 | - | 4.49 | 42,024 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.44 | 37,172 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.65 | 41,809 |
| Canadian Prime Ministers Quiz | 0 | - | 4.56 | 45,604 |
| Canadian Geography on the Map | 0 | - | 4.56 | 23,972 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 191,806 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.92 | 86,354 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,285 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 333,499 |
| Europe Geography Decoder | 0 | - | 4.89 | 62,707 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 90,636 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.82 | 38,894 |
| The Only European Country ... | 0 | - | 4.94 | 175,633 |
| Ancient Greek Trivia | 0 | - | 4.56 | 63,071 |
| Figures from Greek Mythology | 0 | - | 4.92 | 168,250 |
| Countries Italy Declared War On | 0 | - | 4.79 | 39,619 |
| Countries of the World in 1900 | 0 | - | 4.88 | 64,610 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 168,323 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 125,806 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 143,175 |
| Historical City to Country | 0 | - | 4.82 | 71,791 |
| Countries by Former Name | 0 | - | 4.98 | 92,353 |
| Cities by Former Name | 0 | - | 4.87 | 70,075 |
| Add A Letter - Make a European City | 0 | - | 4.87 | 20,682 |
| Ancient Roman Trivia #2 | 0 | - | 4.55 | 35,163 |
| Geography of the Roman Empire | 0 | - | 4.58 | 47,962 |
| Roman Names for Places | 0 | - | 4.66 | 41,004 |
| Byzantine History | 0 | - | 4.87 | 26,045 |
| History of Spain Quiz | 0 | - | 4.33 | 19,478 |
