| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,285 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,129 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,370 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,930 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,840 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,033 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,467 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,717 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,877 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,846 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,065 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,457 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,054 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,647 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,808 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,248 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,711 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,772 |
| North America Map Quiz | 0 | - | 4.98 | 244,295 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,587 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,812 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,697 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,920 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,869 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,907 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,087 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,559 |
| Most Common High School Mascots | 0 | - | 4.47 | 31,815 |
| Central American Countries | 0 | - | 4.98 | 154,992 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 145,800 |
| Territories of the United States | 0 | - | 4.79 | 52,126 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,365 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,509 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,421 |
| New York City Geography | 0 | - | 4.42 | 32,913 |
| Native American Tribes in the US | 0 | - | 4.72 | 25,256 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,109 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,149 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,083 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,630 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,516 |
| 75 Americans Named John | 0 | - | 4.41 | 23,821 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,782 |
| New York True or False? | 0 | - | 4.53 | 33,679 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,296 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,770 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,409 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 74,863 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,200 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,403 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 89,952 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,306 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,142 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 81,843 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,555 |
| Ten Most Rectangular U.S. States | 0 | - | 4.54 | 70,879 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.67 | 44,956 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,014 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,359 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,133 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,137 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,108 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,894 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,985 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,211 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,825 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,755 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,032 |
| Which Island in the United States? | 0 | - | 4.29 | 29,145 |
| American Foods | 0 | - | 3.66 | 39,272 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,665 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,180 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,798 |
| U.S. Analogies | 0 | - | 4.27 | 19,602 |
| Florida True or False? | 0 | - | 4.48 | 28,533 |
| Old West History | 0 | - | 4.33 | 15,221 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,489 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,847 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,643 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.44 | 29,576 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,354 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,149 |
| US States with the Most Executions | 0 | - | 4.51 | 26,347 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 28,916 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,598 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.40 | 40,060 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,022 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,579 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,659 |
| Name a Valid Answer - United States #2 | 0 | - | 4.16 | 27,117 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,303 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,184 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,737 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,977 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,308 |
| US States Quiz | 0 | - | 5.00 | 16,693,150 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,203 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,571 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,875 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,527 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,072 |
| History of Mexico | 0 | - | 4.58 | 15,227 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,121 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,782 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,030 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,619 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,112 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,771 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,823 |
| Three Real and One Fake - U.S. Geography | 0 | - | 4.34 | 29,217 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,506 |
| California Multiple Choice | 0 | - | 4.40 | 28,037 |
| San Francisco Trivia | 0 | - | 4.32 | 15,661 |
| San Francisco A-Z | 0 | - | 4.18 | 9,521 |
| Florida Multiple Choice | 0 | - | 4.33 | 10,165 |
| Boston City Trivia | 0 | - | 4.38 | 24,129 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,600 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,189 |
| Countries by Wikipedia Descriptions #1 | 0 | - | 4.93 | 65,007 |
| Countries by Wikipedia Descriptions #4 | 0 | - | 4.87 | 56,675 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,008 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,577 |
| Pixelated United States Map | 0 | - | 4.89 | 93,437 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,418 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,814 |
| Three Real and One Fake - U.S. History | 0 | - | 4.33 | 25,676 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,652,464 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,208 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 24,986 |
| U.S. History Multiple Choice #1 | 0 | - | 4.31 | 22,152 |
| U.S. History Multiple Choice #4 | 0 | - | 4.26 | 25,486 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,682 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,321 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,368 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,607 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,865 |
| U.S. States By Population | 0 | - | 4.92 | 152,326 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,356 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,835 |
| US States with an Empty Map | 0 | - | 5.00 | 618,567 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,519 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,745 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,855 |
| Top 10 Most Religious U.S. States | 0 | - | 4.31 | 19,229 |
| 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 | 25,322 |
| U.S. States with Youngest Median Age | 0 | - | 4.32 | 20,554 |
| Top 10 U.S. States by Percent Born in State | 0 | - | 4.25 | 12,281 |
| 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 | 9,533 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,076 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,480 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,440 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,226 |
| Africa A-Z | 0 | - | 4.57 | 46,357 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,462 |
| U.S. Geography by Letter - C | 0 | - | 4.26 | 73,337 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,306 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,303 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 48,987 |
| U.S. Geography by Letter - P | 0 | - | 4.34 | 47,376 |
| U.S. Geography by Letter - M | 0 | - | 4.13 | 52,588 |
| U.S. Geography by Letter - L | 0 | - | 4.03 | 40,348 |
| U.S. Geography by Letter - G | 0 | - | 4.12 | 38,593 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,321 |
| USA Tourist Attractions by Description #2 | 0 | - | 4.00 | 21,271 |
| American Inventions #1 | 0 | - | 3.63 | 31,460 |
| American Inventions #2 | 0 | - | 3.93 | 15,826 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,792 |
| Rivers of the United States | 0 | - | 4.93 | 65,484 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.94 | 31,322 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,787 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,368 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,508 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,276 |
| University of California Campuses | 0 | - | 3.84 | 8,855 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,419 |
| People on Money - United States | 0 | - | 4.31 | 63,202 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,627 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,540 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,601 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,530 |
| Draw All US State Borders | 0 | - | 4.99 | 133,448 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,837 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,627 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,013 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,065 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,920 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,533 |
| Famous Canadians Quiz | 0 | - | 3.94 | 23,359 |
| 20 Most-Visited Places in Canada | 0 | - | 4.27 | 13,125 |
| Canada Decoder | 0 | - | 4.12 | 18,645 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,661 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,879 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,315 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 34,016 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,061 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,581 |
| Famous Caribbean People | 0 | - | 4.37 | 12,565 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 23,919 |
