| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,201 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,929 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,741 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,740 |
| North America Map Quiz | 0 | - | 4.98 | 251,794 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,956 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,532 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,407 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,733 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 95,107 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,275 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,277 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 85,176 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,674 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,772 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,509 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,371 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,436 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,656 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,555 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,448 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,250 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 222,311 |
| Most Common High School Mascots | 0 | - | 4.47 | 32,302 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,707 |
| Canada Multiple Choice Quiz | 0 | - | 4.50 | 49,637 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,675 |
| History of Russia Quiz | 0 | - | 4.47 | 31,998 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,615 |
| History of Italy | 0 | - | 4.55 | 32,137 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,810 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,610 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,412 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,338 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,826 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,078 |
| Name the English Monarchs | 0 | - | 4.91 | 506,063 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.81 | 55,150 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,734 |
| Australian Capitals | 0 | - | 4.92 | 62,824 |
| U.S. Highway Signs By State | 0 | - | 4.46 | 15,566 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,723,478 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,677 |
| Official European Union Languages | 0 | - | 4.97 | 239,674 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,571 |
| Europe Map Quiz | 0 | - | 5.00 | 4,785,267 |
| The Trojan War | 0 | - | 4.83 | 39,964 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,522 |
| Name that Greek Letter | 0 | - | 4.93 | 324,875 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,859 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,556 |
| Roman Emperors | 0 | - | 4.95 | 121,095 |
| Prime Ministers of the UK | 0 | - | 4.95 | 442,053 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,038 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 47,102 |
| Countries by Founding Story | 0 | - | 4.95 | 77,754 |
| Independence from Whom | 0 | - | 4.99 | 212,943 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,349 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,811 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,816 |
| Name a Valid Answer - United States #1 | 0 | - | 4.62 | 94,362 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,637 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,068 |
| Asia Map Quiz | 0 | - | 4.99 | 924,450 |
| Africa Map Quiz | 0 | - | 5.00 | 2,127,757 |
| History of South Africa | 0 | - | 4.60 | 17,757 |
| Native American Tribes in the US | 0 | - | 4.74 | 25,720 |
| History of Austria | 0 | - | 4.70 | 17,968 |
| Geography of the French Empire | 0 | - | 4.45 | 27,209 |
| The French Revolution | 0 | - | 4.47 | 24,136 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,463 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,554 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,504 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,393 |
| The Vikings! | 0 | - | 4.46 | 28,400 |
| The Portuguese Empire | 0 | - | 4.58 | 12,099 |
| History of Iran | 0 | - | 4.66 | 16,417 |
| History of China | 0 | - | 4.35 | 57,539 |
| History of India | 0 | - | 4.62 | 21,506 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,403 |
| Australia Map Quiz | 0 | - | 4.95 | 346,038 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,313 |
| New World Crops | 0 | - | 4.38 | 30,955 |
| North American Physical Geography | 0 | - | 4.35 | 30,455 |
| Most Populous Native American Tribes | 0 | - | 4.28 | 12,483 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,323 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,786 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,886 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,617 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,077 |
| Celtic Nations | 0 | - | 4.61 | 47,082 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,283 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,986 |
| The Only European Country ... | 0 | - | 4.91 | 218,780 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,405 |
| History of France | 0 | - | 4.61 | 57,564 |
| Ancient Greek Words | 0 | - | 4.93 | 112,387 |
| Ancient Rome - True or False? | 0 | - | 4.85 | 43,282 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,039 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,450 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,198 |
| Geography of the British Empire | 0 | - | 4.48 | 39,840 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,862 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,930 |
| Countries that Have Controlled Mesopotamia | 0 | - | 4.15 | 15,606 |
| Countries of Africa | 0 | - | 5.00 | 2,557,457 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,775 |
| African East Coast | 0 | - | 4.96 | 96,693 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,549 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,872 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,633 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,038 |
| Recently Independent Countries | 0 | - | 4.98 | 160,224 |
| Historical City to Country | 0 | - | 4.85 | 78,985 |
| Countries by Former Name | 0 | - | 4.99 | 125,765 |
| Cities by Former Name | 0 | - | 4.83 | 92,010 |
| All Modern-Day Countries Ever Controlled by Turkic People | 0 | - | 4.94 | 41,247 |
| All Modern-Day Countries Ever Controlled by Arab People with a Map | 0 | - | 4.98 | 55,683 |
| Australian States and Territories | 0 | - | 4.96 | 142,780 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,480 |
| Australia True or False | 0 | - | 4.87 | 57,122 |
| Prime Ministers of Australia | 0 | - | 4.51 | 32,179 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,569 |
| History of Mexico | 0 | - | 4.52 | 15,360 |
| United States Map Quiz | 0 | - | 4.98 | 4,170,342 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,437 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,724 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.12 | 41,168 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,458 |
| Name a Valid U.S. President #1 | 0 | - | 4.90 | 193,664 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,831 |
| The Most Recent... United States | 0 | - | 4.46 | 18,563 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,887 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,149 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,962 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,493 |
| Sahel Countries on a Map | 0 | - | 4.99 | 21,475 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,425 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,976 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,577 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,721 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 87,976 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,540 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,496 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,276 |
| Official and Regional Languages of Europe on a Map | 0 | - | 4.99 | 113,141 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,105 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,722 |
| Slavic Countries | 0 | - | 4.96 | 112,309 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,673 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 75,214 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,212 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,032 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,615 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,563 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,487 |
| History of The Netherlands | 0 | - | 4.46 | 17,544 |
| History of Spain | 0 | - | 4.23 | 21,158 |
| Medieval English History | 0 | - | 4.53 | 43,641 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,760 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,469 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,840 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,095 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,740 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,259 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 72,008 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,486 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.91 | 50,537 |
| Countries of the Middle East | 0 | - | 4.96 | 202,488 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,725 |
| Chinese Inventions | 0 | - | 4.30 | 33,854 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,640 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,486 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,262 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 117,416 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,206 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 34,067 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,511 |
| Top African Languages on a Map | 0 | - | 4.94 | 75,158 |
| African Island Countries | 0 | - | 4.96 | 102,384 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,507 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,622 |
| Former Flags | 0 | - | 4.97 | 108,487 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,665 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,499 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,704 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,837 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 25,225 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 54,086 |
| Countries of the World in 1882 with a Map | 0 | - | 4.89 | 45,045 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,040 |
| Australia Country Quiz | 0 | - | 4.43 | 69,820 |
| Flags of North and South America | 0 | - | 4.99 | 376,590 |
| South America Map Quiz | 0 | - | 5.00 | 1,556,020 |
| Peru True or False? | 0 | - | 4.58 | 15,311 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,774 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,843 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,030,559 |
| Events in U.S. History | 0 | - | 4.41 | 28,812 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,188 |
