| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,091 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,771 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,999 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,249 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,630 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,858 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,894 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,221 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,427 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,227 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,932 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,151 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,165 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,356 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,972 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,369 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,135 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,583 |
| Name the English Monarchs | 0 | - | 4.91 | 504,487 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,923 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,750 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,711,770 |
| History of Russia Quiz | 0 | - | 4.47 | 31,970 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,602 |
| Name that Greek Letter | 0 | - | 4.93 | 324,329 |
| History of Italy | 0 | - | 4.55 | 32,084 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,745 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,323 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,991 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,605 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,585 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,386 |
| The Trojan War | 0 | - | 4.83 | 39,845 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,399 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,986 |
| Roman Emperors | 0 | - | 4.95 | 120,534 |
| Oceania Map Quiz | 0 | - | 4.98 | 655,766 |
| Australian Capitals | 0 | - | 4.92 | 62,776 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,400 |
| Official European Union Languages | 0 | - | 4.97 | 239,080 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,236 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,506 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,243 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,716 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,069 |
| Asia Map Quiz | 0 | - | 4.99 | 920,608 |
| Africa Map Quiz | 0 | - | 5.00 | 2,123,041 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,580 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,910 |
| Countries by Founding Story | 0 | - | 4.95 | 77,443 |
| Independence from Whom | 0 | - | 4.99 | 212,294 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,870 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,645 |
| History of South Africa | 0 | - | 4.60 | 17,728 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,035 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,309 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,006 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,834 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,150 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,917 |
| The Only European Country ... | 0 | - | 4.91 | 217,717 |
| Most Forested European Countries | 0 | - | 4.80 | 75,491 |
| Least Forested Countries in Asia | 0 | - | 4.75 | 64,817 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,794 |
| History of Austria | 0 | - | 4.70 | 17,923 |
| Geography of the French Empire | 0 | - | 4.45 | 27,168 |
| The French Revolution | 0 | - | 4.47 | 24,077 |
| History of France | 0 | - | 4.61 | 57,346 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.98 | 74,737 |
| Ancient Greek Words | 0 | - | 4.93 | 112,038 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,322 |
| The Vikings! | 0 | - | 4.46 | 28,375 |
| The Portuguese Empire | 0 | - | 4.58 | 12,087 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,939 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,424 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,971 |
| Geography of the British Empire | 0 | - | 4.48 | 39,770 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,436 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,588 |
| History of Iran | 0 | - | 4.66 | 16,390 |
| History of China | 0 | - | 4.37 | 57,374 |
| History of India | 0 | - | 4.62 | 21,468 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,205 |
| African East Coast | 0 | - | 4.96 | 96,388 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,239 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,375 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,948 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,475 |
| Recently Independent Countries | 0 | - | 4.98 | 159,567 |
| Historical City to Country | 0 | - | 4.84 | 78,681 |
| Countries by Former Name | 0 | - | 4.99 | 125,437 |
| Cities by Former Name | 0 | - | 4.83 | 91,794 |
| Animals by Skeleton Image | 0 | - | 4.81 | 46,712 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,781 |
| Australia Map Quiz | 0 | - | 4.95 | 345,395 |
| Prime Ministers of Australia | 0 | - | 4.50 | 32,080 |
| History of Mexico | 0 | - | 4.58 | 15,341 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,835 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,741 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,518 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,781 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,544 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,722 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,300 |
| Celtic Nations | 0 | - | 4.69 | 47,011 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,114 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,968 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,462 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,362 |
| History of The Netherlands | 0 | - | 4.46 | 17,499 |
| Medieval English History | 0 | - | 4.53 | 43,591 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,538 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,286 |
| Chinese Inventions | 0 | - | 4.30 | 33,828 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,544 |
| Countries of Africa | 0 | - | 5.00 | 2,547,621 |
| Australian States and Territories | 0 | - | 4.96 | 142,361 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,387 |
| Australia True or False | 0 | - | 4.87 | 56,994 |
| Flags of North and South America | 0 | - | 4.99 | 374,836 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,754 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,466 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,214 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,406 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,656 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,026,839 |
| North America Map Quiz | 0 | - | 4.98 | 249,784 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,837 |
| Events in U.S. History | 0 | - | 4.41 | 28,734 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,145 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,232 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,201 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,199 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,363 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,283 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,668 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,444 |
| Sahel Countries on a Map | 0 | - | 4.99 | 21,376 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,250,337 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,722 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,049 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,553 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,673 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,456 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,714 |
| Least Forested European Countries | 0 | - | 4.25 | 54,096 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,674 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,823 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,789 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,695 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,494 |
| Slavic Countries | 0 | - | 4.96 | 111,993 |
| French History Multiple Choice | 0 | - | 4.55 | 33,145 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,517 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,520 |
| History of Germany | 0 | - | 4.39 | 52,913 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,995 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,741 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,868 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,949 |
| Ancient Roman Trivia #2 | 0 | - | 4.59 | 41,700 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,049 |
| Roman Names for Places | 0 | - | 4.62 | 58,487 |
| Byzantine History | 0 | - | 4.91 | 28,940 |
| Byzantine Emperors | 0 | - | 4.92 | 14,414 |
| History of Spain | 0 | - | 4.23 | 21,130 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,247 |
| Counties of England | 0 | - | 4.97 | 799,792 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,793 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,865 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,194 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,816 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,232 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,018 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,772 |
| Flags of Asia Quiz | 0 | - | 4.99 | 616,720 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,479 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,114 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,441 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,326 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,346 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,891 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,732 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,950 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.91 | 50,240 |
| Countries of the Middle East | 0 | - | 4.96 | 201,865 |
| History of Egypt | 0 | - | 4.58 | 24,067 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,627 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,303 |
| Flags of Africa Quiz | 0 | - | 5.00 | 474,125 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,518 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,890 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,590 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,516 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,003 |
| Top African Languages on a Map | 0 | - | 4.94 | 74,634 |
| African Island Countries | 0 | - | 4.96 | 101,972 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,046 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,477 |
| Former Flags | 0 | - | 4.97 | 108,073 |
