| Countries of South America with an Empty Map | 0 | - | 4.95 | 105,614 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.93 | 55,016 |
| States of Brazil | 0 | - | 4.98 | 90,035 |
| South America Map Quiz | 0 | - | 5.00 | 1,558,348 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,186 |
| States of Mexico | 0 | - | 4.96 | 178,719 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,720 |
| Word Chain - South America | 0 | - | 4.51 | 24,021 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,468 |
| Flags of North and South America | 0 | - | 4.99 | 378,108 |
| South American Physical Geography | 0 | - | 4.58 | 18,412 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,871 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,232 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,768 |
| Canada Provinces and Territories | 0 | - | 5.00 | 347,082 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,335 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,857 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,625 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,786 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,463 |
| The Only American Country ... | 0 | - | 4.92 | 122,347 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,772 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,801 |
| Famous People from South America | 0 | - | 4.15 | 22,135 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,960 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 65,300 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,958 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,966 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 76,055 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,190 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,331 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,880 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,666 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,668 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,947 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,895 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,881 |
| History of Mexico | 0 | - | 4.52 | 15,375 |
| Mexico States Map Quiz | 0 | - | 4.85 | 105,775 |
| South America A-Z | 0 | - | 4.15 | 10,954 |
| Central American Countries | 0 | - | 4.98 | 157,539 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,691 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 151,043 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,588 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,553 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,740 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 247,010 |
| Pixelated United States Map | 0 | - | 4.89 | 94,931 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,737 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,591 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,162 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,815 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,179 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,428 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,451 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,507 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,549 |
| U.S. States By Population | 0 | - | 4.92 | 154,258 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,367 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,973 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,165 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,974 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,594 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,206 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,171 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,315 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,769 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,876 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,717 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 68,062 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,667 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,644 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,901 |
| Washington... or Washington D.C.? | 0 | - | 4.33 | 26,598 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,574 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,106 |
| Countries that Beat Canada | 0 | - | 4.90 | 99,117 |
| Canada True or False? | 0 | - | 4.57 | 55,184 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,868 |
| Guyana Country Quiz | 0 | - | 4.50 | 22,963 |
| Venezuela Country Quiz | 0 | - | 4.51 | 30,772 |
| Paraguay Country Quiz | 0 | - | 4.54 | 25,432 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,427 |
| Suriname Country Quiz | 0 | - | 4.61 | 19,949 |
| Belize Country Quiz | 0 | - | 4.85 | 21,115 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,315 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,495 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,801 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,384 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,028 |
| Iceland... or Ireland? | 0 | - | 4.74 | 57,259 |
| WWI... or WWII? | 0 | - | 4.85 | 143,816 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,968 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,804 |
| Famous Caribbean People | 0 | - | 4.37 | 12,668 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 24,176 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,960 |
| Territories of the United States | 0 | - | 4.80 | 52,668 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,928 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 176,240 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,593 |
| California Multiple Choice | 0 | - | 4.40 | 28,196 |
| Florida Multiple Choice | 0 | - | 4.33 | 10,212 |
| New York City Geography | 0 | - | 4.43 | 33,202 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,932 |
| Europe Map Quiz | 0 | - | 5.00 | 4,793,160 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,433 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 281,022 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,653 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,290 |
| Australian Capitals | 0 | - | 4.92 | 62,861 |
| Pixelated Americas Map | 0 | - | 4.39 | 47,495 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,932 |
| South American Cities on the Map | 0 | - | 4.52 | 35,580 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,314 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,647 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,797 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,696 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,294 |
| United States Country Quiz | 0 | - | 4.43 | 102,338 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,099 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,779 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,731 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,487 |
| 75 Americans Named John | 0 | - | 4.41 | 23,987 |
| Three Real and One Fake - U.S. History | 0 | - | 4.33 | 25,857 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,160 |
| North Carolina... or South Carolina? | 0 | - | 4.21 | 10,572 |
| U.S. History Multiple Choice #2 | 0 | - | 4.33 | 25,139 |
| U.S. History Multiple Choice #1 | 0 | - | 4.29 | 22,302 |
| U.S. History Multiple Choice #4 | 0 | - | 4.24 | 25,679 |
| New England States | 0 | - | 4.51 | 59,913 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,114 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,137 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,217 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,335 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,183 |
| U.S. States by Borders | 0 | - | 4.61 | 35,514 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 189,251 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,717 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,395 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,479 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,981 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,267 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,852 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,527 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,539 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,902 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,450 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,336 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,618 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 83,161 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,330 |
| Ten Most Rectangular U.S. States | 0 | - | 4.54 | 71,811 |
| Canada Country Quiz | 0 | - | 4.55 | 133,169 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,684 |
| Canada A-Z | 0 | - | 4.73 | 32,992 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,447 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,855 |
| Official European Union Languages | 0 | - | 4.97 | 240,363 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,811 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,391 |
| Which European Country - Multiple Choice | 0 | - | 4.51 | 84,637 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,383 |
| Asia Map Quiz | 0 | - | 4.99 | 926,686 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,256 |
| Which Asian Country? | 0 | - | 4.64 | 57,792 |
| China Multiple Choice | 0 | - | 4.50 | 37,438 |
| Africa Map Quiz | 0 | - | 5.00 | 2,130,709 |
| Which African Country? | 0 | - | 4.58 | 36,485 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,607 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,599 |
| Australian States and Territories | 0 | - | 4.96 | 143,060 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,545 |
| Australia Map Quiz | 0 | - | 4.95 | 346,482 |
| Australia True or False | 0 | - | 4.87 | 57,212 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 113,078 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,967 |
| South American Geography Quiz #2 | 0 | - | 4.40 | 44,346 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,800 |
| El Salvador Country Quiz | 0 | - | 4.63 | 31,924 |
| Jamaica Country Quiz | 0 | - | 4.59 | 35,265 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,841 |
| North America Map Quiz | 0 | - | 4.98 | 252,755 |
| Top U.S. Universities | 0 | - | 4.15 | 145,980 |
| Largest United States Airlines | 0 | - | 4.39 | 55,184 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,038 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,046 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,762 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,328 |
| U.S. States by Governor | 0 | - | 4.43 | 18,122 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,783 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,802 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,914 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,296 |
| Events in U.S. History | 0 | - | 4.41 | 28,858 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,218 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 75,106 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,681 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.70 | 61,502 |
