| States of Mexico | 0 | - | 4.95 | 174,602 |
| Mexico States Map Quiz | 0 | - | 4.84 | 104,165 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,744 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,177 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,375 |
| US States Quiz | 0 | - | 5.00 | 16,775,276 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,359 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,635 |
| States of Brazil | 0 | - | 4.97 | 87,118 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,505 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 329,718 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,287 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,403 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,937 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,800 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,065 |
| US States with an Empty Map | 0 | - | 5.00 | 621,256 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,268 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,289 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,483 |
| The Trojan War | 0 | - | 4.83 | 39,553 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,130 |
| Rivers of the United States | 0 | - | 4.93 | 65,812 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,771 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,734 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,590 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,971 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,207 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,069 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,499 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,684 |
| Flags of North and South America | 0 | - | 4.99 | 370,007 |
| South America Map Quiz | 0 | - | 5.00 | 1,544,342 |
| Belize Country Quiz | 0 | - | 4.85 | 20,874 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 32,033 |
| Cuba Country Quiz | 0 | - | 4.69 | 51,318 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,725 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,600 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,861 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,783 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,707 |
| American Founding Fathers | 0 | - | 4.42 | 23,108 |
| People on Money - United States | 0 | - | 4.31 | 63,260 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,334 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,821 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,526,735 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,475 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,211 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,734 |
| The Only American Country ... | 0 | - | 4.92 | 121,154 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,716 |
| Panama Country Quiz | 0 | - | 4.61 | 25,692 |
| Dominican Republic Country Quiz | 0 | - | 4.61 | 23,305 |
| American History Quotes #1 | 0 | - | 4.37 | 95,817 |
| American History Quotes #2 | 0 | - | 4.38 | 41,293 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,141 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,095 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,503 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,473 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,291 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,185 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,771 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,441 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,968 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,458 |
| History of Mexico | 0 | - | 4.58 | 15,258 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,249 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,514 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,524 |
| Argentina Country Quiz | 0 | - | 4.53 | 57,270 |
| Brazil Country Quiz | 0 | - | 4.52 | 101,406 |
| Brazil Cities Map Quiz | 0 | - | 4.62 | 36,468 |
| Chile Country Quiz | 0 | - | 4.75 | 39,882 |
| Ecuador Country Quiz | 0 | - | 4.60 | 31,727 |
| Peru Country Quiz | 0 | - | 4.54 | 48,467 |
| Central American Countries | 0 | - | 4.98 | 155,495 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 146,771 |
| Grenada Country Quiz | 0 | - | 4.62 | 18,847 |
| Saint Kitts and Nevis Country Quiz | 0 | - | 4.57 | 18,677 |
| Trinidad and Tobago Country Quiz | 0 | - | 4.61 | 22,069 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,777 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,815 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,548 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 745,124 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,700 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,316 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,009 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,733 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 79,007 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,233 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,186 |
| Pixelated United States Map | 0 | - | 4.89 | 93,801 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,972 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,223 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,050 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,845 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,972 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,676 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,701 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,673,113 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,890 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,245 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,328 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,385,186 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,904 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,902 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,329 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,564 |
| U.S. States By Population | 0 | - | 4.92 | 152,769 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,869 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,157 |
| US States by Borders in 30 Seconds | 0 | - | 4.69 | 2,671,489 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,936 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,972 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,243 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,172 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,709 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,289 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,813 |
| Name the English Monarchs | 0 | - | 4.92 | 499,993 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,603 |
| South American Physical Geography | 0 | - | 4.58 | 18,308 |
| Which South American Country? | 0 | - | 4.69 | 51,820 |
| Countries that Beat Brazil | 0 | - | 4.49 | 68,198 |
| Jamaica Country Quiz | 0 | - | 4.58 | 34,951 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,456 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,386 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 41,609 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,496 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,112 |
| Arms Exports - United States | 0 | - | 4.75 | 61,873 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,422 |
| State Quiz - Alaska | 0 | - | 4.42 | 41,903 |
| State Quiz - Arizona | 0 | - | 4.44 | 36,592 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,771 |
| State Quiz - California | 0 | - | 4.68 | 64,170 |
| State Quiz - Florida | 0 | - | 4.47 | 62,116 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,748 |
| Countries that Visit Florida the Most | 0 | - | 4.70 | 71,774 |
| State Quiz - Georgia | 0 | - | 4.48 | 35,420 |
| Countries Closest to Hawaii | 0 | - | 4.54 | 53,399 |
| State Quiz - Illinois | 0 | - | 4.44 | 33,250 |
| State Quiz - Kentucky | 0 | - | 4.41 | 32,340 |
| State Quiz - Minnesota | 0 | - | 4.41 | 38,666 |
| New York Cities Map Quiz | 0 | - | 4.54 | 42,129 |
| State Quiz - New York | 0 | - | 4.52 | 45,905 |
| State Quiz - New Jersey | 0 | - | 4.42 | 38,002 |
| State Quiz - Texas | 0 | - | 4.43 | 62,672 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,148 |
| State Quiz - Pennsylvania | 0 | - | 4.50 | 48,801 |
| State Quiz - Tennessee | 0 | - | 4.54 | 34,019 |
| State Quiz - Virginia | 0 | - | 4.52 | 40,154 |
| State Quiz - Washington | 0 | - | 4.45 | 36,274 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 29,777 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,553 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,725 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.74 | 38,385 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 38,809 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,770 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,585 |
| U.S. States with More Cows than People | 0 | - | 4.74 | 47,175 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,333 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 53,603 |
| U.S. States with Spanish Names | 0 | - | 4.50 | 87,579 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,448 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,688 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 34,976 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 48,841 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,691 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,577 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,379 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,542 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,510 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,591 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,187 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,560 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,391 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,191 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,624 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,232 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,264 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,682,714 |
| O Canada Lyrics | 0 | - | 4.47 | 50,873 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,109 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,470 |
| Name that Greek Letter | 0 | - | 4.93 | 322,493 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,235 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,269 |
| Roman Emperors | 0 | - | 4.95 | 119,204 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,517 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,180 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 73,735 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 62,704 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,693 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,376 |
| U.S. Geography by Letter - P | 0 | - | 4.36 | 47,813 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 52,944 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 40,797 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 38,935 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,736 |
