| United States Map Quiz | 0 | - | 4.98 | 4,141,895 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,380 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,962 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,329 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,873 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,077 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,494 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,907 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,884 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,082 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,492 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,069 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,661 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,835 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,673 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,922 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,967 |
| North America Map Quiz | 0 | - | 4.98 | 244,448 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,616 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,842 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,796 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,970 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,900 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,992 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,723 |
| 75 Americans Named John | 0 | - | 4.41 | 23,825 |
| Most Common High School Mascots | 0 | - | 4.47 | 31,831 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,097 |
| Central American Countries | 0 | - | 4.98 | 155,056 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 145,897 |
| Territories of the United States | 0 | - | 4.79 | 52,145 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,379 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,552 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,159 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,742 |
| New York City Geography | 0 | - | 4.42 | 32,936 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,539 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,174 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,723 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,568 |
| Native American Tribes in the US | 0 | - | 4.72 | 25,262 |
| American Foods | 0 | - | 3.66 | 39,277 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,189 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,805 |
| U.S. Analogies | 0 | - | 4.27 | 19,607 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,100 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,089 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,631 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,519 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,792 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,312 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,786 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,414 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 74,877 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,212 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,409 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 89,979 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,341 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,154 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 81,872 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,579 |
| Ten Most Rectangular U.S. States | 0 | - | 4.54 | 70,899 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,541 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.67 | 44,960 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,015 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,367 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,156 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,165 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,232 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,237 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,994 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,225 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,239 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,001 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,342 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,874 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,036 |
| Which Island in the United States? | 0 | - | 4.29 | 29,160 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,109 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.94 | 31,679 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,666 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,161 |
| Old West History | 0 | - | 4.33 | 15,223 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,490 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,853 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,645 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.44 | 29,581 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,360 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,161 |
| US States with the Most Executions | 0 | - | 4.51 | 26,349 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 28,922 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,616 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.40 | 40,067 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,026 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,584 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,661 |
| Canada Decoder | 0 | - | 4.12 | 18,648 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,793 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 319,342 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,329 |
| US States Quiz | 0 | - | 5.00 | 16,701,281 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,276 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,577 |
| Name a Valid African Country | 0 | - | 4.98 | 152,936 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,910 |
| History of Mexico | 0 | - | 4.58 | 15,230 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,156 |
| Word Chain - South America | 0 | - | 4.51 | 23,765 |
| Famous Caribbean People | 0 | - | 4.37 | 12,566 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,982 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,212 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,662 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,922 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,015 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,715 |
| Three Real and One Fake - U.S. Geography | 0 | - | 4.34 | 29,221 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,526 |
| California Multiple Choice | 0 | - | 4.40 | 28,042 |
| San Francisco Trivia | 0 | - | 4.32 | 15,662 |
| San Francisco A-Z | 0 | - | 4.18 | 9,521 |
| Florida Multiple Choice | 0 | - | 4.33 | 10,165 |
| Boston City Trivia | 0 | - | 4.38 | 24,132 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,624 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,194 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,207 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,795 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,251 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,050 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 88,662 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,517 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 79,528 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,015 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,580 |
| Pixelated United States Map | 0 | - | 4.89 | 93,483 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,468 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,856 |
| Three Real and One Fake - U.S. History | 0 | - | 4.33 | 25,679 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,654,555 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,257 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 24,988 |
| U.S. History Multiple Choice #1 | 0 | - | 4.31 | 22,156 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,484 |
| U.S. History Multiple Choice #4 | 0 | - | 4.26 | 25,490 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,736 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,366 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,421 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,673 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,910 |
| U.S. States By Population | 0 | - | 4.92 | 152,371 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,405 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,867 |
| US States with an Empty Map | 0 | - | 5.00 | 618,848 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,554 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,766 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,887 |
| Top 10 Most Religious U.S. States | 0 | - | 4.31 | 19,231 |
| U.S. States with the Least Gun Ownership | 0 | - | 4.35 | 25,377 |
| Top 10 US States that Produce the Most Coal | 0 | - | 4.27 | 25,326 |
| U.S. States with Youngest Median Age | 0 | - | 4.32 | 20,556 |
| Top 10 U.S. States by Percent Born in State | 0 | - | 4.25 | 12,283 |
| Top 10 U.S. States by Percent Born out of State | 0 | - | 4.22 | 11,797 |
| U.S. States with the Most Workplace Fatalities | 0 | - | 4.09 | 9,534 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,084 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,481 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,356 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,991 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,128 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,972 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 108,180 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 273,120 |
| Capitals in Random Squares of the World Map | 0 | - | 4.92 | 74,908 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 120,101 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,538 |
| Famous People from South America | 0 | - | 4.15 | 21,785 |
| USA Tourist Attractions by Description #2 | 0 | - | 4.00 | 21,271 |
| American Inventions #1 | 0 | - | 3.63 | 31,461 |
| American Inventions #2 | 0 | - | 3.93 | 15,828 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,807 |
| Rivers of the United States | 0 | - | 4.93 | 65,520 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,420 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,582 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,318 |
| California Groups of Things | 0 | - | 4.25 | 45,268 |
| University of California Campuses | 0 | - | 3.84 | 8,860 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,448 |
| New York Groups of Things | 0 | - | 4.38 | 59,942 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,242 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,883 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,587 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,713 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,581 |
| Draw All US State Borders | 0 | - | 4.99 | 133,623 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,871 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,659 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,066 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,096 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,937 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,552 |
| 20 Most-Visited Places in Canada | 0 | - | 4.27 | 13,127 |
| Canadian Musical Acts by Two Songs | 0 | - | 4.02 | 27,257 |
