| United States Map Quiz | 0 | - | 4.98 | 4,155,399 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,682 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,410 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,285 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,383 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,852 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,864 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,432 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,851 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,635 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,112 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,450 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,156 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,442 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,021,628 |
| Canada Provinces and Territories | 0 | - | 5.00 | 341,845 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,627 |
| North America Map Quiz | 0 | - | 4.98 | 248,082 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,080 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,450 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,782 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,802 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,592 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,963 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 219,518 |
| 75 Americans Named John | 0 | - | 4.41 | 23,897 |
| Most Common High School Mascots | 0 | - | 4.47 | 32,075 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,210 |
| Central American Countries | 0 | - | 4.98 | 156,292 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 148,132 |
| Territories of the United States | 0 | - | 4.79 | 52,352 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,614 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,339 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,312 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,131 |
| New York City Geography | 0 | - | 4.42 | 33,074 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,882 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,877 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 109,850 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,668 |
| Native American Tribes in the US | 0 | - | 4.72 | 25,503 |
| American Foods | 0 | - | 3.66 | 39,366 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,313 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,881 |
| U.S. Analogies | 0 | - | 4.27 | 19,662 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,443 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,280 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,702 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,615 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,983 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,607 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.72 | 33,005 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,630 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,146 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,355 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,644 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,812 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,775 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,379 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,462 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,930 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 46,865 |
| Ten Most Rectangular U.S. States | 0 | - | 4.54 | 71,328 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,928 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,110 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,146 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,515 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,556 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,148 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,542 |
| South America Map Quiz | 0 | - | 5.00 | 1,548,421 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,099 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,545 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,375 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,309 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,011 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,370 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,111 |
| Which Island in the United States? | 0 | - | 4.29 | 29,470 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,128 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,241 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,737 |
| Branches of the U.S. Military | 0 | - | 4.39 | 24,347 |
| Old West History | 0 | - | 4.34 | 15,264 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,517 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,920 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,716 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,673 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,543 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,371 |
| US States with the Most Executions | 0 | - | 4.51 | 26,389 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,050 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,950 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,131 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,687 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,782 |
| Canada Decoder | 0 | - | 4.12 | 18,711 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,823 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 321,901 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,747 |
| US States Quiz | 0 | - | 5.00 | 16,849,044 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,778 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,651 |
| Name a Valid African Country | 0 | - | 4.98 | 153,905 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,386 |
| History of Mexico | 0 | - | 4.58 | 15,299 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,840 |
| Word Chain - South America | 0 | - | 4.51 | 23,887 |
| Famous Caribbean People | 0 | - | 4.37 | 12,609 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,856 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 746,607 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,416 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,524 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,452 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,084 |
| Three Real and One Fake - U.S. Geography | 0 | - | 4.34 | 29,332 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,835 |
| California Multiple Choice | 0 | - | 4.40 | 28,095 |
| San Francisco Trivia | 0 | - | 4.32 | 15,695 |
| San Francisco A-Z | 0 | - | 4.18 | 9,565 |
| Florida Multiple Choice | 0 | - | 4.33 | 10,181 |
| Boston City Trivia | 0 | - | 4.38 | 24,164 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,151 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,308 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,496 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,420 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,498 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,876 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 89,237 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.88 | 132,847 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 80,385 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,217 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,706 |
| Pixelated United States Map | 0 | - | 4.87 | 94,147 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,467 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,603 |
| Three Real and One Fake - U.S. History | 0 | - | 4.33 | 25,769 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,692,113 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,634 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 25,057 |
| U.S. History Multiple Choice #1 | 0 | - | 4.31 | 22,233 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,989 |
| U.S. History Multiple Choice #4 | 0 | - | 4.26 | 25,578 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,729 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,265 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,279 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,814 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,077 |
| U.S. States By Population | 0 | - | 4.92 | 153,445 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,297 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,369 |
| US States with an Empty Map | 0 | - | 5.00 | 623,776 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,200 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,145 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,527 |
| Top 10 Most Religious U.S. States | 0 | - | 4.31 | 19,333 |
| U.S. States with the Least Gun Ownership | 0 | - | 4.35 | 25,447 |
| Top 10 US States that Produce the Most Coal | 0 | - | 4.27 | 25,566 |
| U.S. States with Youngest Median Age | 0 | - | 4.32 | 20,597 |
| Top 10 U.S. States by Percent Born in State | 0 | - | 4.25 | 12,332 |
| Top 10 U.S. States by Percent Born out of State | 0 | - | 4.22 | 11,836 |
| U.S. States with the Most Workplace Fatalities | 0 | - | 4.09 | 9,567 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,200 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,543 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,125 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,583 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,469 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,914 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 108,765 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 275,041 |
| Capitals in Random Squares of the World Map | 0 | - | 4.92 | 75,391 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 121,485 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,007 |
| Famous People from South America | 0 | - | 4.15 | 21,941 |
| USA Tourist Attractions by Description #2 | 0 | - | 4.00 | 21,317 |
| American Inventions #1 | 0 | - | 3.63 | 31,499 |
| American Inventions #2 | 0 | - | 3.93 | 15,860 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,130 |
| Rivers of the United States | 0 | - | 4.93 | 66,112 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,234 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,700 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,195 |
| California Groups of Things | 0 | - | 4.25 | 45,447 |
| University of California Campuses | 0 | - | 3.84 | 8,908 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,027 |
| New York Groups of Things | 0 | - | 4.35 | 63,405 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,430 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,933 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,474 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,613 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,311 |
| Draw All US State Borders | 0 | - | 4.99 | 137,000 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,558 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,495 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,883 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,658 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,387 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,856 |
| 20 Most-Visited Places in Canada | 0 | - | 4.27 | 13,180 |
| Canadian Musical Acts by Two Songs | 0 | - | 4.02 | 28,568 |
