| United States Map Quiz | 0 | - | 4.98 | 4,163,581 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,807 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,613 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,753 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,616 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,411 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,029 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,705 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,287 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,950 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,418 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,668 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,449 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,721 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,025,842 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,671 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,711 |
| North America Map Quiz | 0 | - | 4.98 | 249,472 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,307 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,734 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,953 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,189 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,841 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,407 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 220,813 |
| 75 Americans Named John | 0 | - | 4.41 | 23,929 |
| Most Common High School Mascots | 0 | - | 4.47 | 32,190 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,601 |
| Central American Countries | 0 | - | 4.98 | 156,767 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 112,961 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 149,063 |
| Territories of the United States | 0 | - | 4.80 | 52,468 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,741 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,686 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,838 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,290 |
| New York City Geography | 0 | - | 4.42 | 33,127 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,917 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,629 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,348 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,089 |
| Native American Tribes in the US | 0 | - | 4.74 | 25,602 |
| American Foods | 0 | - | 3.66 | 39,401 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,364 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,921 |
| U.S. Analogies | 0 | - | 4.27 | 19,691 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,520 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,367 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,736 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,669 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.12 | 41,076 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,745 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,104 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,749 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,291 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,423 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,754 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,067 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,022 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,471 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,744 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,077 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 46,971 |
| Ten Most Rectangular U.S. States | 0 | - | 4.54 | 71,523 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,111 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,179 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,199 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,581 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,712 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,399 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,116 |
| South America Map Quiz | 0 | - | 5.00 | 1,551,778 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,132 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,710 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,429 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,393 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,276 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,589 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,151 |
| Which Island in the United States? | 0 | - | 4.29 | 29,606 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,133 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,290 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,777 |
| Branches of the U.S. Military | 0 | - | 4.39 | 24,416 |
| Old West History | 0 | - | 4.34 | 15,285 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,527 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,951 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,749 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,732 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,617 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,447 |
| US States with the Most Executions | 0 | - | 4.51 | 26,406 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,104 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,091 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,178 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,747 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,832 |
| Canada Decoder | 0 | - | 4.07 | 18,734 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,303 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 323,157 |
| US States Quiz | 0 | - | 5.00 | 16,918,223 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,808 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,680 |
| Name a Valid African Country | 0 | - | 4.98 | 154,361 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,573 |
| History of Mexico | 0 | - | 4.58 | 15,335 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,095 |
| Word Chain - South America | 0 | - | 4.51 | 23,930 |
| Famous Caribbean People | 0 | - | 4.37 | 12,633 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,112 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 748,043 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,874 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,833 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 333,120 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,249 |
| Three Real and One Fake - U.S. Geography | 0 | - | 4.34 | 29,390 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,938 |
| California Multiple Choice | 0 | - | 4.40 | 28,123 |
| San Francisco Trivia | 0 | - | 4.32 | 15,711 |
| San Francisco A-Z | 0 | - | 4.18 | 9,581 |
| Florida Multiple Choice | 0 | - | 4.33 | 10,187 |
| Boston City Trivia | 0 | - | 4.38 | 24,179 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,397 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,361 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,379 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,043 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,033 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,221 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 89,511 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.88 | 133,413 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 80,760 |
| Word Chain - Africa | 0 | - | 4.47 | 31,653 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,296 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,765 |
| Pixelated United States Map | 0 | - | 4.88 | 94,481 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,939 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,993 |
| Three Real and One Fake - U.S. History | 0 | - | 4.33 | 25,793 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,708,394 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,073 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 25,088 |
| U.S. History Multiple Choice #1 | 0 | - | 4.31 | 22,261 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,193 |
| U.S. History Multiple Choice #4 | 0 | - | 4.24 | 25,617 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,136 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,711 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,674 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,338 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,657 |
| U.S. States By Population | 0 | - | 4.92 | 153,740 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,711 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,598 |
| US States with an Empty Map | 0 | - | 5.00 | 626,004 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,502 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,334 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,796 |
| Top 10 Most Religious U.S. States | 0 | - | 4.32 | 19,380 |
| U.S. States with the Least Gun Ownership | 0 | - | 4.35 | 25,491 |
| Top 10 US States that Produce the Most Coal | 0 | - | 4.30 | 30,930 |
| U.S. States with Youngest Median Age | 0 | - | 4.32 | 20,614 |
| Top 10 U.S. States by Percent Born in State | 0 | - | 4.25 | 12,356 |
| Top 10 U.S. States by Percent Born out of State | 0 | - | 4.22 | 11,861 |
| U.S. States with the Most Workplace Fatalities | 0 | - | 4.09 | 9,578 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,241 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,569 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,575 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,877 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,653 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,374 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 109,028 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 275,899 |
| Capitals in Random Squares of the World Map | 0 | - | 4.92 | 75,657 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 122,141 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,595 |
| Famous People from South America | 0 | - | 4.15 | 22,018 |
| USA Tourist Attractions by Description #2 | 0 | - | 4.00 | 21,338 |
| American Inventions #1 | 0 | - | 3.63 | 31,513 |
| American Inventions #2 | 0 | - | 3.93 | 15,873 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,236 |
| Rivers of the United States | 0 | - | 4.93 | 66,336 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,691 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,821 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,580 |
| California Groups of Things | 0 | - | 4.25 | 45,526 |
| University of California Campuses | 0 | - | 3.84 | 8,924 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,249 |
| New York Groups of Things | 0 | - | 4.35 | 63,937 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,504 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,872 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,845 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,472 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,667 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,307 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,940 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,338 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,940 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,606 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 62,000 |
| 20 Most-Visited Places in Canada | 0 | - | 4.27 | 13,211 |
| Canadian Musical Acts by Two Songs | 0 | - | 4.02 | 28,725 |
