| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,314 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,033 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,918 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,455 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,567 |
| Official European Union Languages | 0 | - | 4.97 | 239,417 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,436 |
| Word Chain - South America | 0 | - | 4.51 | 23,968 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,649 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 221,775 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,860 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,631 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,388 |
| Peru True or False? | 0 | - | 4.58 | 15,298 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,707 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,844 |
| North America Map Quiz | 0 | - | 4.98 | 250,625 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,110 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,112 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,886 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,677 |
| Top African Languages on a Map | 0 | - | 4.94 | 74,919 |
| Famous People from South America | 0 | - | 4.15 | 22,049 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,170 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,601 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 95,023 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,684 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,764 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,590 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,800 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,766 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,172 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,788 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,687 |
| States of Mexico | 0 | - | 4.96 | 177,616 |
| History of Mexico | 0 | - | 4.52 | 15,354 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,519 |
| States of Brazil | 0 | - | 4.97 | 89,189 |
| Central American Countries | 0 | - | 4.98 | 157,108 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,144 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 149,799 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,338 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,814 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,942 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,506 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,072 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,564 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,757 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,555 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,889 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,685 |
| Slavic Languages | 0 | - | 4.68 | 54,609 |
| Most Common High School Mascots | 0 | - | 4.47 | 32,256 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,651 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,624 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,884 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,923 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,284 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.40 | 32,625 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,024 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,749 |
| Famous Caribbean People | 0 | - | 4.37 | 12,649 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 24,119 |
| Territories of the United States | 0 | - | 4.80 | 52,554 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,821 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,939 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,404 |
| Name a Valid Answer - United States #1 | 0 | - | 4.62 | 94,282 |
| New York City Geography | 0 | - | 4.43 | 33,164 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,808 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,420 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,168 |
| Top World Languages | 0 | - | 4.92 | 827,484 |
| Official Languages of South Africa | 0 | - | 4.57 | 26,213 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,826 |
| Australian Capitals | 0 | - | 4.92 | 62,804 |
| Native American Tribes in the US | 0 | - | 4.74 | 25,677 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,145 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,016 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,031 |
| Asia Map Quiz | 0 | - | 4.99 | 922,933 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 33,308 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,852 |
| Countries by Official Language | 0 | - | 4.95 | 195,681 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,978 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,175 |
| Countries in their Native Language | 0 | - | 4.99 | 199,452 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,470 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,148 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,246 |
| Australia Map Quiz | 0 | - | 4.95 | 345,737 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,301 |
| Pixelated Americas Map | 0 | - | 4.39 | 47,356 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,832 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,816 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,580 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,414 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,754 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,702 |
| 75 Americans Named John | 0 | - | 4.41 | 23,955 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.12 | 41,136 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,854 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,175 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,794 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,382 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,468 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,811 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,238 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,161 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,536 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,928 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,191 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 47,041 |
| Ten Most Rectangular U.S. States | 0 | - | 4.54 | 71,657 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,400 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,412 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,828 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,254 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,699 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,218 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,717 |
| The Only European Country ... | 0 | - | 4.91 | 218,321 |
| European Countries NOT in NATO | 0 | - | 4.90 | 62,131 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,992 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,678 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,188 |
| Countries of Africa | 0 | - | 5.00 | 2,552,696 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,610 |
| African East Coast | 0 | - | 4.96 | 96,542 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,410 |
| Spanish to English Country Names | 0 | - | 4.86 | 33,665 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,600 |
| Top World Languages A-Z | 0 | - | 4.83 | 36,878 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,597 |
| German-Speaking Countries | 0 | - | 4.92 | 145,911 |
| Italian Name Translation | 0 | - | 4.83 | 47,678 |
| French-Speaking Countries | 0 | - | 4.85 | 271,349 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,828 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,469 |
| Sahel Countries on a Map | 0 | - | 4.99 | 21,440 |
| Australian States and Territories | 0 | - | 4.96 | 142,593 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,444 |
| Australia True or False | 0 | - | 4.87 | 57,065 |
| Flags of North and South America | 0 | - | 4.99 | 375,834 |
| South American Geography Quiz #2 | 0 | - | 4.41 | 43,378 |
| South American Physical Geography | 0 | - | 4.58 | 18,386 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,760 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,172 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,767 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,228 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,764 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,672 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,491 |
| US States with the Most Executions | 0 | - | 4.51 | 26,419 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,135 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,197 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,240 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,215 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,781 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,867 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,271 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,078 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,621 |
| Celtic Nations | 0 | - | 4.61 | 47,059 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,577 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,276 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,827 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,192 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,605 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,882 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,152 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,901 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,061 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,924 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,639 |
| Slavic Countries | 0 | - | 4.96 | 112,174 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,615 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,337 |
| Languages of Spain | 0 | - | 4.36 | 23,394 |
| Counties of England | 0 | - | 4.97 | 801,194 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,024 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,176 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,614 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,345 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,710 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,982 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,561 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,097 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,249 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.91 | 50,407 |
| Countries of the Middle East | 0 | - | 4.96 | 202,243 |
| Officially Recognized Languages of India | 0 | - | 4.40 | 31,512 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,397 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,681 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,049 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 117,300 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,070 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,960 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,303 |
| African Island Countries | 0 | - | 4.96 | 102,232 |
