| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,908 |
| States of Mexico | 0 | - | 4.96 | 178,967 |
| Mexico States Map Quiz | 0 | - | 4.85 | 105,856 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,105 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,864 |
| US States Quiz | 0 | - | 5.00 | 17,034,505 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.93 | 55,113 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,784 |
| States of Brazil | 0 | - | 4.98 | 90,168 |
| Colombia Country Quiz | 0 | - | 4.90 | 41,085 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 336,605 |
| Countries Bordering Brazil | 0 | - | 4.96 | 132,395 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 50,010 |
| 10 Longest Rivers in the United States | 0 | - | 4.86 | 39,485 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,476 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,505 |
| US States with an Empty Map | 0 | - | 5.00 | 629,949 |
| Canadian Prime Ministers | 0 | - | 4.64 | 58,055 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,487 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,706 |
| The Trojan War | 0 | - | 4.83 | 40,127 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,376 |
| Rivers of the United States | 0 | - | 4.93 | 66,843 |
| Countries Closest to Alaska | 0 | - | 4.93 | 125,397 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,751 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,994 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 50,347 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 126,118 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,774 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 93,065 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,311 |
| Flags of North and South America | 0 | - | 4.99 | 378,587 |
| South America Map Quiz | 0 | - | 5.00 | 1,559,302 |
| Belize Country Quiz | 0 | - | 4.85 | 21,134 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 32,409 |
| Cuba Country Quiz | 0 | - | 4.70 | 51,824 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,330 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,539 |
| U.S. States that Border Canada | 0 | - | 4.91 | 187,206 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,579 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,951 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,663 |
| American Founding Fathers | 0 | - | 4.42 | 23,311 |
| People on Money - United States | 0 | - | 4.31 | 63,519 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,643 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.09 | 54,570 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,559,758 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,918 |
| Category Elimination - U.S. States #2 | 0 | - | 4.83 | 135,959 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,242 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,539 |
| The Only American Country ... | 0 | - | 4.92 | 122,415 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,830 |
| Panama Country Quiz | 0 | - | 4.61 | 25,974 |
| Dominican Republic Country Quiz | 0 | - | 4.61 | 23,643 |
| Names of Generations | 0 | - | 4.09 | 45,634 |
| American History Quotes #1 | 0 | - | 4.37 | 96,269 |
| American History Quotes #2 | 0 | - | 4.38 | 41,547 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,379 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,996 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,666 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,096 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,684 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.92 | 95,816 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 93,019 |
| U.S. Geography by Letter - B | 0 | - | 4.54 | 70,185 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 58,656 |
| History of Mexico | 0 | - | 4.52 | 15,383 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,945 |
| Countries of South America with an Empty Map | 0 | - | 4.95 | 105,676 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,909 |
| Brazil Country Quiz | 0 | - | 4.52 | 102,557 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,888 |
| Chile Country Quiz | 0 | - | 4.75 | 40,368 |
| Ecuador Country Quiz | 0 | - | 4.60 | 32,065 |
| Peru Country Quiz | 0 | - | 4.54 | 49,009 |
| Central American Countries | 0 | - | 4.98 | 157,641 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,726 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 151,275 |
| Grenada Country Quiz | 0 | - | 4.62 | 19,044 |
| Saint Kitts and Nevis Country Quiz | 0 | - | 4.57 | 18,879 |
| Trinidad and Tobago Country Quiz | 0 | - | 4.57 | 22,316 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 48,254 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 63,103 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,641 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 750,602 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 160,306 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,365 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,630 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 176,033 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 85,087 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,679 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 247,280 |
| Pixelated United States Map | 0 | - | 4.89 | 95,052 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,839 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,670 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 118,543 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,222 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,179 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,201 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,884 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,733,567 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,865 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,579 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,265 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,400,533 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,505 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,510 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,602 |
| U.S. States that Start with M | 0 | - | 4.94 | 188,672 |
| U.S. States By Population | 0 | - | 4.92 | 154,319 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,451 |
| U.S. States with Longest Names | 0 | - | 4.85 | 45,022 |
| US States by Borders in 30 Seconds | 0 | - | 4.69 | 2,696,791 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 89,027 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,623 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,262 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,683 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,743 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,847 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,146 |
| Name the English Monarchs | 0 | - | 4.91 | 507,753 |
| Asian Last Names in the United States | 0 | - | 4.43 | 47,043 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,769 |
| South American Physical Geography | 0 | - | 4.58 | 18,417 |
| Which South American Country? | 0 | - | 4.69 | 52,166 |
| Countries that Beat Brazil | 0 | - | 4.50 | 69,385 |
| El Salvador Country Quiz | 0 | - | 4.63 | 31,966 |
| Jamaica Country Quiz | 0 | - | 4.59 | 35,278 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,865 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,683 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 53,154 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,930 |
| Countries that Beat the United States | 0 | - | 4.93 | 169,026 |
| Arms Exports - United States | 0 | - | 4.77 | 62,829 |
| U.S. Bill of Rights | 0 | - | 4.52 | 35,228 |
| State Quiz - Alaska | 0 | - | 4.42 | 42,388 |
| State Quiz - Arizona | 0 | - | 4.44 | 37,035 |
| California Cities Map Quiz | 0 | - | 4.50 | 88,256 |
| State Quiz - California | 0 | - | 4.69 | 64,967 |
| State Quiz - Florida | 0 | - | 4.47 | 62,776 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 61,056 |
| Countries that Visit Florida the Most | 0 | - | 4.70 | 72,888 |
| State Quiz - Georgia | 0 | - | 4.48 | 35,853 |
| Countries Closest to Hawaii | 0 | - | 4.54 | 54,103 |
| State Quiz - Illinois | 0 | - | 4.44 | 33,648 |
| State Quiz - Kentucky | 0 | - | 4.42 | 32,718 |
| State Quiz - Minnesota | 0 | - | 4.41 | 39,107 |
| New York Cities Map Quiz | 0 | - | 4.55 | 42,430 |
| State Quiz - New York | 0 | - | 4.52 | 46,572 |
| State Quiz - New Jersey | 0 | - | 4.42 | 38,440 |
| State Quiz - Texas | 0 | - | 4.43 | 63,334 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,695 |
| State Quiz - Pennsylvania | 0 | - | 4.50 | 49,464 |
| State Quiz - Tennessee | 0 | - | 4.54 | 34,459 |
| State Quiz - Virginia | 0 | - | 4.53 | 40,601 |
| State Quiz - Washington | 0 | - | 4.45 | 36,737 |
| Events in U.S. History | 0 | - | 4.41 | 28,870 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 30,605 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,728 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,932 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.75 | 38,574 |
| U.S. States by Clue #1 | 0 | - | 4.50 | 45,647 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,213 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.64 | 66,196 |
| U.S. States with More Cows than People | 0 | - | 4.74 | 47,911 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,786 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,955 |
| U.S. States with Spanish Names | 0 | - | 4.49 | 88,379 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,576 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,522 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.75 | 35,148 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,363 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,998 |
| Longest U.S. State Borders | 0 | - | 4.69 | 40,222 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,739 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,796 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,741 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.54 | 65,083 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,506 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.74 | 64,125 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,631 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,146 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,860 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 114,605 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,389 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,701,392 |
| O Canada Lyrics | 0 | - | 4.47 | 51,095 |
| Countries that Beat Canada | 0 | - | 4.90 | 99,174 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,455 |
| Name that Greek Letter | 0 | - | 4.93 | 325,429 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,558 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,739 |
| Roman Emperors | 0 | - | 4.95 | 121,538 |
| Prime Ministers of the UK | 0 | - | 4.95 | 443,482 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,716 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,778 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,736 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 50,485 |
| U.S. Geography by Letter - P | 0 | - | 4.40 | 54,650 |
