| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,923 |
| Brazil States Map Quiz | 0 | - | 4.85 | 48,060 |
| States of Brazil | 0 | - | 4.97 | 88,089 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,718 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,570 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,595 |
| Peru Country Quiz | 0 | - | 4.54 | 48,663 |
| States of Mexico | 0 | - | 4.96 | 176,114 |
| Mexico States Map Quiz | 0 | - | 4.85 | 104,742 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,549 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,801 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,348 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,578 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,494 |
| Brazil Country Quiz | 0 | - | 4.52 | 101,818 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,638 |
| Chile Country Quiz | 0 | - | 4.77 | 40,055 |
| Ecuador Country Quiz | 0 | - | 4.60 | 31,859 |
| The Trojan War | 0 | - | 4.83 | 39,729 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,860 |
| Which South American Country? | 0 | - | 4.69 | 51,946 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,004 |
| Flags of North and South America | 0 | - | 4.99 | 373,132 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,777 |
| South America Map Quiz | 0 | - | 5.00 | 1,549,857 |
| South American Physical Geography | 0 | - | 4.58 | 18,348 |
| Belize Country Quiz | 0 | - | 4.85 | 20,975 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,214 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,012 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,449 |
| Guyana Country Quiz | 0 | - | 4.50 | 22,805 |
| Countries that Beat Brazil | 0 | - | 4.49 | 68,632 |
| Venezuela Country Quiz | 0 | - | 4.51 | 30,599 |
| Paraguay Country Quiz | 0 | - | 4.53 | 25,295 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,268 |
| Suriname Country Quiz | 0 | - | 4.61 | 19,819 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,342 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,832 |
| The Only American Country ... | 0 | - | 4.92 | 121,613 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,127 |
| South American Cities on the Map | 0 | - | 4.53 | 35,426 |
| US States Quiz | 0 | - | 5.00 | 16,876,379 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,060 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,368 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 81,917 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,686 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,023 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,895 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,872 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,188 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,426 |
| History of Mexico | 0 | - | 4.58 | 15,309 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,925 |
| Central American Countries | 0 | - | 4.98 | 156,481 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 148,443 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,949 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,650 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,505 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,063 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 332,029 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,880 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,231 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,537 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,494 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,628 |
| Name the English Monarchs | 0 | - | 4.91 | 502,706 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,410 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,003 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,482 |
| El Salvador Country Quiz | 0 | - | 4.63 | 31,714 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 32,192 |
| Cuba Country Quiz | 0 | - | 4.70 | 51,513 |
| Jamaica Country Quiz | 0 | - | 4.58 | 35,079 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,614 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,176 |
| Pixelated United States Map | 0 | - | 4.87 | 94,271 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,683 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,770 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,454 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,462 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,698,952 |
| Events in U.S. History | 0 | - | 4.41 | 28,672 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,065 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,866 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,429 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,435 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,004 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,299 |
| U.S. States By Population | 0 | - | 4.92 | 153,545 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,450 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,440 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,613 |
| US States with an Empty Map | 0 | - | 5.00 | 624,653 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,304 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,212 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,624 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,764 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,471 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,388 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,355 |
| Countries that Beat Canada | 0 | - | 4.91 | 97,545 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,050 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,214 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,480 |
| Name that Greek Letter | 0 | - | 4.93 | 323,466 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,677 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,536 |
| Roman Emperors | 0 | - | 4.95 | 120,059 |
| Prime Ministers of the UK | 0 | - | 4.95 | 439,033 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,446 |
| American Founding Fathers | 0 | - | 4.42 | 23,224 |
| People on Money - United States | 0 | - | 4.31 | 63,346 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,466 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,055 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,938 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,647 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,656 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,053 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,909 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,590 |
| History of Russia Quiz | 0 | - | 4.47 | 31,918 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,871 |
| History of Italy | 0 | - | 4.55 | 31,976 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,661 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,237 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,867 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,221 |
| South America A-Z | 0 | - | 4.13 | 10,907 |
| Guatemala Country Quiz | 0 | - | 4.63 | 25,425 |
| Honduras Country Quiz | 0 | - | 4.52 | 23,880 |
| Panama Country Quiz | 0 | - | 4.61 | 25,803 |
| Nicaragua Country Quiz | 0 | - | 4.62 | 26,581 |
| Antigua and Barbuda Country Quiz | 0 | - | 4.68 | 22,092 |
| Dominican Republic Country Quiz | 0 | - | 4.61 | 23,437 |
| Barbados Country Quiz | 0 | - | 4.78 | 19,775 |
| Grenada Country Quiz | 0 | - | 4.62 | 18,936 |
| Saint Kitts and Nevis Country Quiz | 0 | - | 4.57 | 18,754 |
| Trinidad and Tobago Country Quiz | 0 | - | 4.61 | 22,166 |
| Names of Generations | 0 | - | 4.09 | 44,919 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,511 |
| History of Pennsylvania | 0 | - | 4.16 | 7,137 |
| History of Virginia | 0 | - | 4.31 | 11,600 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,802 |
| Europe Map Quiz | 0 | - | 5.00 | 4,763,309 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 213,499 |
| Ancient Greek Words | 0 | - | 4.93 | 111,616 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,138 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 279,174 |
| History of India | 0 | - | 4.62 | 21,427 |
| Africa Map Quiz | 0 | - | 5.00 | 2,118,043 |
| History of South Africa | 0 | - | 4.60 | 17,689 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,407 |
| Australian Capitals | 0 | - | 4.92 | 62,722 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,782 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,809 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,302 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,526 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,584 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,333 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,173 |
| United States Country Quiz | 0 | - | 4.43 | 101,517 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,884 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,601 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,820 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,308 |
| Valid Answer - U.S. History | 0 | - | 4.24 | 22,535 |
| Animals in American History | 0 | - | 4.20 | 28,025 |
| Canada Country Quiz | 0 | - | 4.54 | 132,483 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 124,217 |
| Canada A-Z | 0 | - | 4.73 | 32,838 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,137 |
| Official European Union Languages | 0 | - | 4.97 | 238,520 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,865 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,243 |
| History of Austria | 0 | - | 4.70 | 17,863 |
| Geography of the French Empire | 0 | - | 4.45 | 27,060 |
| The French Revolution | 0 | - | 4.47 | 23,935 |
| History of France | 0 | - | 4.59 | 56,984 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,983 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,147 |
| The Vikings! | 0 | - | 4.46 | 28,343 |
| The Portuguese Empire | 0 | - | 4.58 | 12,066 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,353 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,485 |
| Geography of the British Empire | 0 | - | 4.48 | 39,674 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,290 |
| Asia Map Quiz | 0 | - | 4.99 | 916,888 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,979 |
| History of Iran | 0 | - | 4.66 | 16,358 |
| Egyptian Gods and Goddesses | 0 | - | 4.43 | 27,535 |
| History of China | 0 | - | 4.37 | 57,198 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,222 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,713 |
| Countries by Founding Story | 0 | - | 4.95 | 77,222 |
| Independence from Whom | 0 | - | 4.99 | 211,717 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,985 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,482 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,448 |
| Countries of Africa | 0 | - | 5.00 | 2,537,281 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,837 |
