| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,797 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,504 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,719 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,802 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,326 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,642 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,947 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,071 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,561 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,451 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,418 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,067 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,978 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,541 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,178 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,345 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,774 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,406 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,927 |
| Name the English Monarchs | 0 | - | 4.92 | 500,530 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,342 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,247 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,678,824 |
| History of Russia Quiz | 0 | - | 4.49 | 31,859 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,114 |
| Name that Greek Letter | 0 | - | 4.93 | 322,748 |
| History of Italy | 0 | - | 4.55 | 31,911 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,586 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,115 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,750 |
| Prime Ministers of the UK | 0 | - | 4.95 | 436,996 |
| Europe Map Quiz | 0 | - | 5.00 | 4,748,833 |
| The Trojan War | 0 | - | 4.83 | 39,595 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,291 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,330 |
| Roman Emperors | 0 | - | 4.95 | 119,420 |
| Africa Map Quiz | 0 | - | 5.00 | 2,111,864 |
| Oceania Map Quiz | 0 | - | 4.98 | 639,151 |
| Australian Capitals | 0 | - | 4.92 | 62,671 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,892 |
| Official European Union Languages | 0 | - | 4.97 | 237,806 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,413 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,814 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,782 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,216 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,444,704 |
| Asia Map Quiz | 0 | - | 4.99 | 911,893 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,707 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,488 |
| Countries by Founding Story | 0 | - | 4.95 | 76,936 |
| Independence from Whom | 0 | - | 4.99 | 210,976 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,451 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,276 |
| History of India | 0 | - | 4.61 | 21,363 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,367 |
| African East Coast | 0 | - | 4.96 | 95,614 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,442 |
| History of South Africa | 0 | - | 4.60 | 17,646 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,273 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 425,298 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,308 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,136 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,787 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,470 |
| The Only European Country ... | 0 | - | 4.91 | 215,423 |
| Most Forested European Countries | 0 | - | 4.80 | 75,157 |
| Least Forested Countries in Asia | 0 | - | 4.74 | 64,586 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,473 |
| History of Austria | 0 | - | 4.70 | 17,815 |
| Geography of the French Empire | 0 | - | 4.45 | 27,008 |
| The French Revolution | 0 | - | 4.46 | 23,877 |
| History of France | 0 | - | 4.59 | 56,677 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,442 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 73,282 |
| Ancient Greek Words | 0 | - | 4.93 | 111,185 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,879 |
| The Vikings! | 0 | - | 4.46 | 28,300 |
| The Portuguese Empire | 0 | - | 4.58 | 12,035 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,693 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,279 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,170 |
| Geography of the British Empire | 0 | - | 4.48 | 39,602 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 98,316 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,521 |
| History of Iran | 0 | - | 4.66 | 16,318 |
| History of China | 0 | - | 4.37 | 56,950 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,271 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,322 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,003 |
| Recently Independent Countries | 0 | - | 4.98 | 158,468 |
| Historical City to Country | 0 | - | 4.84 | 78,362 |
| Countries by Former Name | 0 | - | 4.99 | 124,745 |
| Cities by Former Name | 0 | - | 4.84 | 91,314 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,624 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,343 |
| Countries of Africa | 0 | - | 5.00 | 2,524,026 |
| Australia Map Quiz | 0 | - | 4.94 | 343,444 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,806 |
| History of Mexico | 0 | - | 4.58 | 15,272 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,761 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,683 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,566 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,908 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,993 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,324 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,457 |
| Celtic Nations | 0 | - | 4.69 | 46,881 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,885 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,852 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,177 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,426 |
| History of The Netherlands | 0 | - | 4.46 | 17,375 |
| Medieval English History | 0 | - | 4.53 | 43,423 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,313 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,379,711 |
| Ottoman Empire Quiz | 0 | - | 4.42 | 17,084 |
| Chinese Inventions | 0 | - | 4.30 | 33,764 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,738 |
| Flags of Africa Quiz | 0 | - | 5.00 | 467,571 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,359 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,983 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,785 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,903 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,862 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,344 |
| African Island Countries | 0 | - | 4.96 | 101,243 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,754 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,030 |
| Australian States and Territories | 0 | - | 4.96 | 141,459 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,172 |
| Australia True or False | 0 | - | 4.87 | 56,703 |
| Flags of North and South America | 0 | - | 4.99 | 370,775 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,440 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,591 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,009 |
| South America Map Quiz | 0 | - | 5.00 | 1,545,535 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,018,303 |
| North America Map Quiz | 0 | - | 4.98 | 246,934 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,583 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,059 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,808 |
| Canada Provinces and Territories | 0 | - | 5.00 | 340,288 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 638,280 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,931 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,161 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 67,909 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,332 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,236,390 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,324,263 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,238 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,777 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,662 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,838 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,150 |
| Least Forested European Countries | 0 | - | 4.25 | 53,913 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,535 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,796 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,483 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,828 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,584 |
| Slavic Countries | 0 | - | 4.96 | 111,329 |
| French History Multiple Choice | 0 | - | 4.55 | 32,964 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,217 |
| History of Germany | 0 | - | 4.39 | 52,740 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,318 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,561 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,013 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,652 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,814 |
| Roman Names for Places | 0 | - | 4.62 | 58,093 |
| Byzantine History | 0 | - | 4.91 | 28,719 |
| History of Spain | 0 | - | 4.23 | 21,055 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,093 |
| Counties of England | 0 | - | 4.97 | 793,240 |
| Anglo-Saxon Kingdoms of England | 0 | - | 4.60 | 25,727 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,705 |
| Giant Great Britain Millennium Quiz | 0 | - | 4.78 | 20,116 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,511 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,066 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,905 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,038 |
| Flags of Asia Quiz | 0 | - | 4.99 | 609,779 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,913 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,312 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,800 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,649 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,421 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,071 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,107 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,705 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.93 | 49,607 |
| Countries of the Middle East | 0 | - | 4.96 | 200,049 |
| History of Egypt | 0 | - | 4.58 | 23,988 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,380 |
| Former Flags | 0 | - | 4.97 | 107,274 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,404 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,274 |
| Countries of the World in 1444 | 0 | - | 4.98 | 59,958 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,179 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 24,720 |
