| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,286 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,191 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,281 |
| North America Map Quiz | 0 | - | 4.98 | 244,310 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,370 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,735 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,783 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,591 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,708 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,920 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,873 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,908 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,932 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,842 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,039 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,470 |
| Central American Countries | 0 | - | 4.98 | 154,998 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 145,805 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,718 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,879 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,848 |
| 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 | 69,056 |
| 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 | 66,809 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,088 |
| NATO Countries | 0 | - | 4.98 | 275,540 |
| EU Countries Quiz | 0 | - | 4.99 | 269,767 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,573 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,361 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,815 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,133 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,139 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,114 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,915 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,827 |
| Territories of the United States | 0 | - | 4.79 | 52,129 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,365 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,512 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,423 |
| New York City Geography | 0 | - | 4.42 | 32,918 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,211 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,308 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,765 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,109 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,149 |
| Native American Tribes in the US | 0 | - | 4.72 | 25,256 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,304 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,190 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,741 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,980 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,877 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,124 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,507 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,008 |
| History of Mexico | 0 | - | 4.58 | 15,227 |
| 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 | 40,786 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,298 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,771 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,409 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 74,866 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,201 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,403 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 89,953 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,308 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,143 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 81,844 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,557 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,190 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,440 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,236 |
| OPEC Countries | 0 | - | 4.74 | 84,809 |
| G7 Leaders Since 2003 | 0 | - | 4.48 | 46,114 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,577 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 32,986 |
| 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 |
| Famous Canadians Quiz | 0 | - | 3.94 | 23,359 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,076 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,472 |
| Africa A-Z | 0 | - | 4.57 | 46,359 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,466 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,032 |
| Which Island in the United States? | 0 | - | 4.29 | 29,146 |
| American Foods | 0 | - | 3.66 | 39,273 |
| 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 |
| Old West History | 0 | - | 4.33 | 15,221 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,489 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,848 |
| 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 | 42,356 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,150 |
| 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 | 24,660 |
| 20 Most-Visited Places in Canada | 0 | - | 4.27 | 13,125 |
| Canada Decoder | 0 | - | 4.12 | 18,645 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,330 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 34,044 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,066 |
| Famous Dictators #1 | 0 | - | 4.69 | 198,727 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,304,414 |
| Australian Capitals | 0 | - | 4.92 | 62,591 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,581 |
| Famous Caribbean People | 0 | - | 4.37 | 12,565 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 23,920 |
| North America Cities by Map | 0 | - | 4.41 | 47,606 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,455 |
| 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 | 24,130 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,571 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,564 |
| Official European Union Languages | 0 | - | 4.97 | 236,467 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,667 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,356 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,859 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,795 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,667 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,187 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,842 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,642 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,604 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,005 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,274 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,057 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,573 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,736 |
| Famous Germans | 0 | - | 4.50 | 54,596 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,317 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,819 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,382 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,149 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,553 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,059 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,700 |
| Middle East A-Z | 0 | - | 4.47 | 45,775 |
| World Leaders Quiz #1 | 0 | - | 4.11 | 109,626 |
| Historical Leaders by Date #1 | 0 | - | 4.48 | 31,214 |
| Historical Leaders by Date #2 | 0 | - | 4.55 | 30,048 |
| Historical Rulers #2 | 0 | - | 4.26 | 47,198 |
| Historical Rulers #1 | 0 | - | 4.35 | 118,465 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 155,757 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,821 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,066 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,754 |
| 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 |
| 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 |
| Canada A-Z | 0 | - | 4.73 | 32,641 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,480 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,072 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,200 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,439,440 |
| Asia Map Quiz | 0 | - | 4.99 | 906,715 |
| A Quiz About Islam | 0 | - | 4.31 | 48,194 |
| Countries That Don't Recognize Israel | 0 | - | 4.63 | 34,425 |
| Famous Dictators #2 | 0 | - | 4.31 | 87,078 |
| Countries of Africa | 0 | - | 5.00 | 2,506,660 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,779 |
| African East Coast | 0 | - | 4.96 | 95,008 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,896 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,766 |
| Australia Map Quiz | 0 | - | 4.94 | 342,399 |
| Prime Ministers of Australia | 0 | - | 4.50 | 31,670 |
| Largest Land Animals of the Americas | 0 | - | 4.38 | 20,191 |
| Pixelated Americas Map | 0 | - | 4.40 | 46,794 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,527 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,072 |
| Word Chain - South America | 0 | - | 4.51 | 23,760 |
| 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 |
| Northernmost Major Cities in the U.S. | 0 | - | 4.38 | 48,536 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,044 |
| U.S. Cities with the Most Homeless People | 0 | - | 4.31 | 33,457 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.94 | 31,346 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,732 |
| University of California Campuses | 0 | - | 3.84 | 8,855 |
