| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,924 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,575 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,169 |
| North America Map Quiz | 0 | - | 4.98 | 248,220 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,698 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,103 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,954 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,547 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,462 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,612 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,239 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,090 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 80,716 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,523 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,883 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,774 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,773 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,056 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,234 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,839 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,472 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,927 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,407 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 219,666 |
| Most Common High School Mascots | 0 | - | 4.47 | 32,094 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,685 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,282 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,520 |
| History of Russia Quiz | 0 | - | 4.47 | 31,905 |
| History of Italy | 0 | - | 4.55 | 31,960 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,643 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,053 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,209 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,765 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,216 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,838 |
| Name the English Monarchs | 0 | - | 4.91 | 502,203 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,760 |
| Australian Capitals | 0 | - | 4.92 | 62,714 |
| U.S. Highway Signs By State | 0 | - | 4.46 | 15,489 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,694,238 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,074 |
| Official European Union Languages | 0 | - | 4.97 | 238,357 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,756 |
| Europe Map Quiz | 0 | - | 5.00 | 4,759,821 |
| The Trojan War | 0 | - | 4.83 | 39,691 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,872 |
| Name that Greek Letter | 0 | - | 4.93 | 323,308 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,731 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,485 |
| Roman Emperors | 0 | - | 4.95 | 119,878 |
| Prime Ministers of the UK | 0 | - | 4.95 | 438,485 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,100 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,667 |
| Countries by Founding Story | 0 | - | 4.95 | 77,145 |
| Independence from Whom | 0 | - | 4.99 | 211,545 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,861 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,439 |
| Africa Map Quiz | 0 | - | 5.00 | 2,116,647 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,610 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,935 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,925 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,712 |
| Asia Map Quiz | 0 | - | 4.99 | 915,893 |
| History of India | 0 | - | 4.62 | 21,414 |
| History of South Africa | 0 | - | 4.60 | 17,679 |
| Native American Tribes in the US | 0 | - | 4.72 | 25,516 |
| History of Austria | 0 | - | 4.70 | 17,854 |
| Geography of the French Empire | 0 | - | 4.45 | 27,046 |
| The French Revolution | 0 | - | 4.46 | 23,924 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,027 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,437 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,806 |
| The Vikings! | 0 | - | 4.46 | 28,337 |
| The Portuguese Empire | 0 | - | 4.58 | 12,060 |
| History of Iran | 0 | - | 4.66 | 16,351 |
| History of China | 0 | - | 4.37 | 57,144 |
| Countries of Africa | 0 | - | 5.00 | 2,534,149 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,751 |
| African East Coast | 0 | - | 4.96 | 95,968 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,793 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,601 |
| Australia Map Quiz | 0 | - | 4.95 | 344,223 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,264 |
| New World Crops | 0 | - | 4.38 | 30,870 |
| North American Physical Geography | 0 | - | 4.35 | 30,410 |
| Most Populous Native American Tribes | 0 | - | 4.28 | 12,439 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,247 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,057 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,627 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,831 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,259 |
| Celtic Nations | 0 | - | 4.69 | 46,926 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,948 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,088 |
| The Only European Country ... | 0 | - | 4.91 | 216,383 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,990 |
| History of France | 0 | - | 4.59 | 56,932 |
| Ancient Greek Words | 0 | - | 4.93 | 111,502 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 42,896 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,803 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,338 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,413 |
| Geography of the British Empire | 0 | - | 4.48 | 39,655 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,863 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,382,120 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,557 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,769 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,032 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,654 |
| Recently Independent Countries | 0 | - | 4.98 | 159,147 |
| Historical City to Country | 0 | - | 4.84 | 78,487 |
| Countries by Former Name | 0 | - | 4.99 | 125,025 |
| Cities by Former Name | 0 | - | 4.83 | 91,515 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 40,989 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,306 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,425 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,945 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,860 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,516 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,154 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,202 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,383 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,889 |
| African Island Countries | 0 | - | 4.96 | 101,545 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,288 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,211 |
| Australian States and Territories | 0 | - | 4.96 | 141,881 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,274 |
| Australia True or False | 0 | - | 4.87 | 56,824 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,910 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,644 |
| History of Mexico | 0 | - | 4.58 | 15,304 |
| United States Map Quiz | 0 | - | 4.98 | 4,156,487 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,286 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,623 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.12 | 40,994 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,385 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,631 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,228 |
| The Most Recent... United States | 0 | - | 4.45 | 18,431 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,493 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,850 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,223 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,378 |
| Sahel Countries on a Map | 0 | - | 4.99 | 21,261 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,580 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,118 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,477 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,075 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,329 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,264 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,316 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,015 |
| Official and Regional Languages of Europe on a Map | 0 | - | 4.99 | 111,692 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,177 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,014 |
| Slavic Countries | 0 | - | 4.96 | 111,589 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,469 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,329 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,989 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,970 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,901 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,297 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,792 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,085 |
| History of The Netherlands | 0 | - | 4.46 | 17,428 |
| History of Spain | 0 | - | 4.23 | 21,079 |
| Medieval English History | 0 | - | 4.53 | 43,495 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,170 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,655 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,091 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,929 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,792 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,418 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,366 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,194 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.91 | 49,847 |
| Countries of the Middle East | 0 | - | 4.96 | 201,014 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 17,121 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,493 |
| Chinese Inventions | 0 | - | 4.30 | 33,794 |
| Former Flags | 0 | - | 4.97 | 107,629 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,486 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,635 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,197 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,390 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,885 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 53,262 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,355 |
| Flags of Africa Quiz | 0 | - | 5.00 | 470,483 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,589 |
| Australia Country Quiz | 0 | - | 4.43 | 69,567 |
| Flags of North and South America | 0 | - | 4.99 | 372,652 |
| South America Map Quiz | 0 | - | 5.00 | 1,548,846 |
| Peru True or False? | 0 | - | 4.58 | 15,247 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,702 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,718 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,022,160 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,105 |
