| United States Map Quiz | 0 | - | 4.98 | 4,147,783 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,521 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,183 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,781 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,138 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,412 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,666 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,179 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,505 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,362 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,836 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,309 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,965 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,183 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,016,784 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,688 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,702 |
| North America Map Quiz | 0 | - | 4.98 | 246,315 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,848 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,097 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,684 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,340 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,248 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,430 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 218,020 |
| 75 Americans Named John | 0 | - | 4.41 | 23,857 |
| Most Common High School Mascots | 0 | - | 4.47 | 31,951 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,546 |
| Central American Countries | 0 | - | 4.98 | 155,480 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 146,696 |
| Territories of the United States | 0 | - | 4.79 | 52,247 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,477 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,945 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,709 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,931 |
| New York City Geography | 0 | - | 4.42 | 33,017 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,653 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,999 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,250 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,000 |
| Native American Tribes in the US | 0 | - | 4.72 | 25,325 |
| American Foods | 0 | - | 3.66 | 39,323 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,247 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,841 |
| U.S. Analogies | 0 | - | 4.27 | 19,636 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,254 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,192 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,676 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,565 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,886 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,447 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,888 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,504 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,013 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,278 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,540 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,558 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,548 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,260 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,153 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,766 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.42 | 45,975 |
| Ten Most Rectangular U.S. States | 0 | - | 4.54 | 71,105 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,734 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.67 | 45,027 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,075 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,444 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,385 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,490 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,769 |
| South America Map Quiz | 0 | - | 5.00 | 1,544,205 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,045 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,356 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,313 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,186 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,708 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,097 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,078 |
| Which Island in the United States? | 0 | - | 4.29 | 29,314 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,119 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.94 | 32,145 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,698 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,244 |
| Old West History | 0 | - | 4.33 | 15,238 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,507 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,889 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,680 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.44 | 29,626 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,449 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,253 |
| US States with the Most Executions | 0 | - | 4.51 | 26,368 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 28,979 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,779 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,072 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,644 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,723 |
| Canada Decoder | 0 | - | 4.12 | 18,682 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,277 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 320,607 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,525 |
| US States Quiz | 0 | - | 5.00 | 16,772,648 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,076 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,610 |
| Name a Valid African Country | 0 | - | 4.98 | 153,364 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,107 |
| History of Mexico | 0 | - | 4.58 | 15,257 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,513 |
| Word Chain - South America | 0 | - | 4.51 | 23,827 |
| Famous Caribbean People | 0 | - | 4.37 | 12,591 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,535 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 745,067 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,992 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,142 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 329,621 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,909 |
| Three Real and One Fake - U.S. Geography | 0 | - | 4.34 | 29,276 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,666 |
| California Multiple Choice | 0 | - | 4.40 | 28,064 |
| San Francisco Trivia | 0 | - | 4.32 | 15,680 |
| San Francisco A-Z | 0 | - | 4.18 | 9,543 |
| Florida Multiple Choice | 0 | - | 4.33 | 10,170 |
| Boston City Trivia | 0 | - | 4.38 | 24,148 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,882 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,239 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,642 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,506 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,836 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,436 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 88,914 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,044 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 79,907 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,135 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,636 |
| Pixelated United States Map | 0 | - | 4.89 | 93,788 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,955 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,210 |
| Three Real and One Fake - U.S. History | 0 | - | 4.33 | 25,723 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,672,533 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,713 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 25,022 |
| U.S. History Multiple Choice #1 | 0 | - | 4.31 | 22,193 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,717 |
| U.S. History Multiple Choice #4 | 0 | - | 4.26 | 25,531 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,308 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,884 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,883 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,307 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,543 |
| U.S. States By Population | 0 | - | 4.92 | 152,755 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,858 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,151 |
| US States with an Empty Map | 0 | - | 5.00 | 621,186 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,921 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,967 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,234 |
| Top 10 Most Religious U.S. States | 0 | - | 4.31 | 19,287 |
| U.S. States with the Least Gun Ownership | 0 | - | 4.35 | 25,402 |
| Top 10 US States that Produce the Most Coal | 0 | - | 4.27 | 25,384 |
| U.S. States with Youngest Median Age | 0 | - | 4.32 | 20,576 |
| Top 10 U.S. States by Percent Born in State | 0 | - | 4.25 | 12,301 |
| Top 10 U.S. States by Percent Born out of State | 0 | - | 4.22 | 11,810 |
| U.S. States with the Most Workplace Fatalities | 0 | - | 4.09 | 9,549 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,135 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,518 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,613 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,256 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,295 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,428 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 108,467 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 274,114 |
| Capitals in Random Squares of the World Map | 0 | - | 4.92 | 75,101 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 120,755 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,323 |
| Famous People from South America | 0 | - | 4.15 | 21,864 |
| USA Tourist Attractions by Description #2 | 0 | - | 4.00 | 21,292 |
| American Inventions #1 | 0 | - | 3.63 | 31,482 |
| American Inventions #2 | 0 | - | 3.93 | 15,844 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,928 |
| Rivers of the United States | 0 | - | 4.93 | 65,778 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,785 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,099 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,757 |
| California Groups of Things | 0 | - | 4.25 | 45,335 |
| University of California Campuses | 0 | - | 3.84 | 8,888 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,723 |
| New York Groups of Things | 0 | - | 4.38 | 60,017 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,332 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 503,906 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,048 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,545 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,957 |
| Draw All US State Borders | 0 | - | 4.99 | 135,149 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,198 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,053 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,485 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,379 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,183 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,681 |
| 20 Most-Visited Places in Canada | 0 | - | 4.27 | 13,149 |
| Canadian Musical Acts by Two Songs | 0 | - | 4.02 | 28,277 |
