| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,312 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,619 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,525 |
| North America Map Quiz | 0 | - | 4.98 | 244,401 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,375 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,855 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,905 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,607 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,765 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,944 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,890 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,963 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,947 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,862 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,056 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,487 |
| Central American Countries | 0 | - | 4.98 | 155,024 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 145,865 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,733 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,891 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,867 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,076 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,476 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,064 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,656 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,825 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,094 |
| NATO Countries | 0 | - | 4.98 | 275,674 |
| EU Countries Quiz | 0 | - | 4.99 | 269,883 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,672 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,363 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,829 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,149 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,156 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,215 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,128 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,842 |
| Territories of the United States | 0 | - | 4.79 | 52,141 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,372 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,536 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,438 |
| New York City Geography | 0 | - | 4.42 | 32,929 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,218 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,322 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,835 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,109 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,159 |
| Native American Tribes in the US | 0 | - | 4.72 | 25,260 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,324 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,230 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,773 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,994 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,897 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,146 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,524 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,013 |
| History of Mexico | 0 | - | 4.58 | 15,230 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,087 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,631 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,518 |
| 75 Americans Named John | 0 | - | 4.41 | 23,824 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,792 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,304 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,779 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,411 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 74,871 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,207 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,408 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 89,967 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,326 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,151 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 81,867 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,571 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,192 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,448 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,313 |
| OPEC Countries | 0 | - | 4.74 | 84,818 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,126 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,577 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,992 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.67 | 44,958 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,015 |
| Famous Canadians Quiz | 0 | - | 3.94 | 23,360 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,080 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,590 |
| Africa A-Z | 0 | - | 4.57 | 46,367 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,513 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,034 |
| Which Island in the United States? | 0 | - | 4.29 | 29,152 |
| American Foods | 0 | - | 3.66 | 39,275 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,666 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,187 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,803 |
| Old West History | 0 | - | 4.33 | 15,223 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,490 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,851 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,643 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.44 | 29,577 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,358 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,156 |
| US States with the Most Executions | 0 | - | 4.51 | 26,347 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 28,918 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,609 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.40 | 40,067 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,024 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,581 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,661 |
| 20 Most-Visited Places in Canada | 0 | - | 4.27 | 13,127 |
| Canada Decoder | 0 | - | 4.12 | 18,646 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,437 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 34,167 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,091 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,764 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,304,694 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,584 |
| Famous Caribbean People | 0 | - | 4.37 | 12,565 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 23,925 |
| North America Cities by Map | 0 | - | 4.41 | 47,613 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,460 |
| California Multiple Choice | 0 | - | 4.40 | 28,039 |
| 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 | 24,131 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,572 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,576 |
| Official European Union Languages | 0 | - | 4.97 | 236,510 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,696 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,389 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,889 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,827 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,695 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,208 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,871 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,663 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,619 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,015 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,296 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,936 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,587 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,742 |
| Famous Germans | 0 | - | 4.50 | 54,610 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,441 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,825 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,392 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,159 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,561 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,070 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,711 |
| Middle East A-Z | 0 | - | 4.47 | 45,786 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,630 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,217 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,057 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,204 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,473 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,786 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,171 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,250 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,754 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 24,988 |
| U.S. History Multiple Choice #1 | 0 | - | 4.31 | 22,154 |
| U.S. History Multiple Choice #4 | 0 | - | 4.26 | 25,486 |
| 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 | 25,326 |
| 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 | 12,283 |
| 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 |
| Canada A-Z | 0 | - | 4.73 | 32,646 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,480 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,173 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,212 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,288 |
| Asia Map Quiz | 0 | - | 4.99 | 906,938 |
| A Quiz About Islam | 0 | - | 4.31 | 48,202 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,437 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,090 |
| Countries of Africa | 0 | - | 5.00 | 2,507,552 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,803 |
| African East Coast | 0 | - | 4.96 | 95,039 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,914 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,784 |
| Australia Map Quiz | 0 | - | 4.94 | 342,451 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,675 |
| Largest Land Animals of the Americas | 0 | - | 4.38 | 20,193 |
| Pixelated Americas Map | 0 | - | 4.40 | 46,805 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,530 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,073 |
| Word Chain - South America | 0 | - | 4.51 | 23,763 |
| 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 | 15,827 |
| Northernmost Major Cities in the U.S. | 0 | - | 4.38 | 48,544 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,134 |
| U.S. Cities with the Most Homeless People | 0 | - | 4.31 | 33,460 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.94 | 31,540 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,733 |
| University of California Campuses | 0 | - | 3.84 | 8,857 |
