| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,542 |
| United States Map Quiz | 0 | - | 4.98 | 4,166,966 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,909 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,741 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,776 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,715 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,154 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,389 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,922 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,470 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,057 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,547 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,743 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,535 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,867 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,354 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,925 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,861 |
| North America Map Quiz | 0 | - | 4.98 | 250,456 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,435 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,896 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,914 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,469 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,996 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,619 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,571 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 221,629 |
| Most Common High School Mascots | 0 | - | 4.47 | 32,244 |
| Central American Countries | 0 | - | 4.98 | 157,054 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,115 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 149,703 |
| Territories of the United States | 0 | - | 4.80 | 52,536 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,808 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,916 |
| Name a Valid Answer - United States #1 | 0 | - | 4.62 | 94,256 |
| New York City Geography | 0 | - | 4.43 | 33,160 |
| Native American Tribes in the US | 0 | - | 4.74 | 25,662 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,137 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,457 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,407 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,747 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,695 |
| 75 Americans Named John | 0 | - | 4.41 | 23,949 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.12 | 41,120 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,838 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,160 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,787 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,366 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,458 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,800 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,221 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,146 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,523 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,908 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,176 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 47,034 |
| Ten Most Rectangular U.S. States | 0 | - | 4.54 | 71,638 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,221 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,235 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,646 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,841 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,604 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,354 |
| South America Map Quiz | 0 | - | 5.00 | 1,553,615 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,169 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,796 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,853 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,383 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,172 |
| Which Island in the United States? | 0 | - | 4.29 | 29,683 |
| American Foods | 0 | - | 3.66 | 39,424 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,311 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.27 | 14,799 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,399 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,953 |
| U.S. Analogies | 0 | - | 4.27 | 19,710 |
| Florida True or False? | 0 | - | 4.48 | 28,744 |
| Old West History | 0 | - | 4.34 | 15,292 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,529 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,967 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,764 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,758 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,664 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,485 |
| US States with the Most Executions | 0 | - | 4.51 | 26,417 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,128 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,180 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,210 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,779 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,863 |
| Name a Valid Answer - United States #2 | 0 | - | 4.16 | 27,413 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,470 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 88,073 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,647 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,849 |
| US States Quiz | 0 | - | 5.00 | 16,954,566 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,158 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,713 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,672 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,806 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,239 |
| History of Mexico | 0 | - | 4.58 | 15,350 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,283 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,302 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 748,838 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,107 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,211 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,630 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,262 |
| Three Real and One Fake - U.S. Geography | 0 | - | 4.34 | 29,418 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,017 |
| California Multiple Choice | 0 | - | 4.40 | 28,152 |
| San Francisco Trivia | 0 | - | 4.32 | 15,719 |
| San Francisco A-Z | 0 | - | 4.18 | 9,583 |
| Florida Multiple Choice | 0 | - | 4.33 | 10,194 |
| Boston City Trivia | 0 | - | 4.38 | 24,188 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,565 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,393 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,328 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,806 |
| Pixelated United States Map | 0 | - | 4.88 | 94,628 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,218 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,207 |
| Three Real and One Fake - U.S. History | 0 | - | 4.33 | 25,816 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,717,088 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,520 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 25,107 |
| U.S. History Multiple Choice #1 | 0 | - | 4.29 | 22,275 |
| U.S. History Multiple Choice #4 | 0 | - | 4.24 | 25,645 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,735 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,946 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,962 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,593 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,956 |
| U.S. States By Population | 0 | - | 4.92 | 153,919 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,947 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,731 |
| US States with an Empty Map | 0 | - | 5.00 | 627,217 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,686 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,425 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,934 |
| Top 10 Most Religious U.S. States | 0 | - | 4.32 | 19,402 |
| U.S. States with the Least Gun Ownership | 0 | - | 4.35 | 25,512 |
| Top 10 US States that Produce the Most Coal | 0 | - | 4.30 | 31,130 |
| U.S. States with Youngest Median Age | 0 | - | 4.32 | 20,621 |
| Top 10 U.S. States by Percent Born in State | 0 | - | 4.25 | 12,372 |
| Top 10 U.S. States by Percent Born out of State | 0 | - | 4.22 | 11,869 |
| U.S. States with the Most Workplace Fatalities | 0 | - | 4.09 | 9,584 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,262 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,582 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,696 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,547 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,398 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,429 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,391 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 50,118 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 54,290 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,552 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,434 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,593 |
| U.S. Geography by Letter - R | 0 | - | 4.22 | 36,663 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,492 |
| USA Tourist Attractions by Description #2 | 0 | - | 4.00 | 21,351 |
| American Inventions #1 | 0 | - | 3.62 | 31,524 |
| American Inventions #2 | 0 | - | 3.93 | 15,880 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,315 |
| Rivers of the United States | 0 | - | 4.93 | 66,510 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,984 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,930 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,255 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,866 |
| University of California Campuses | 0 | - | 3.84 | 8,935 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,431 |
| People on Money - United States | 0 | - | 4.31 | 63,398 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,886 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,063 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,911 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,900 |
| Draw All US State Borders | 0 | - | 4.99 | 139,615 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,644 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,269 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,601 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,236 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,874 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,120 |
| Famous Canadians Quiz | 0 | - | 3.94 | 23,420 |
| 20 Most-Visited Places in Canada | 0 | - | 4.27 | 13,227 |
| Canadian Musical Acts by Two Songs | 0 | - | 4.05 | 28,796 |
| Canada Decoder | 0 | - | 4.07 | 18,752 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,716 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,834 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,695 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 42,814 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,221 |
| Africa A-Z | 0 | - | 4.57 | 46,730 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,977 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,737 |
| Famous Caribbean People | 0 | - | 4.37 | 12,648 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 24,110 |
| North America Cities by Map | 0 | - | 4.41 | 47,891 |
