| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,754 |
| South America Map Quiz | 0 | - | 5.00 | 1,546,870 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,625 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,013 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,972 |
| Official European Union Languages | 0 | - | 4.97 | 238,034 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,564 |
| Word Chain - South America | 0 | - | 4.51 | 23,866 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 218,993 |
| United States Map Quiz | 0 | - | 4.98 | 4,152,888 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,576 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,492 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,052 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,226 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,019,971 |
| North America Map Quiz | 0 | - | 4.98 | 247,462 |
| Canada Provinces and Territories | 0 | - | 5.00 | 340,984 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 638,926 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,218 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,421 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,374 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,768 |
| Famous People from South America | 0 | - | 4.15 | 21,911 |
| Uruguay Country Quiz | 0 | - | 4.83 | 31,505 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,676 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,513 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,781 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,337 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,109 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,308 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,689 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,790 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,303 |
| States of Mexico | 0 | - | 4.95 | 175,387 |
| History of Mexico | 0 | - | 4.58 | 15,288 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,584 |
| States of Brazil | 0 | - | 4.97 | 87,497 |
| Central American Countries | 0 | - | 4.98 | 155,827 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 147,628 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,190 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,680 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,685 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,353 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,738 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,484 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,015 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,411 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,088 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,346 |
| Slavic Languages | 0 | - | 4.68 | 54,248 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,329 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,487 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,536 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,814 |
| Top 12 Languages Spoken in Asia | 0 | - | 4.39 | 32,527 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,787 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,657 |
| Famous Caribbean People | 0 | - | 4.37 | 12,601 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 24,011 |
| Territories of the United States | 0 | - | 4.79 | 52,316 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,564 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,206 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,058 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,825 |
| New York City Geography | 0 | - | 4.42 | 33,047 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,499 |
| Europe Map Quiz | 0 | - | 5.00 | 4,753,857 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,903 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,561 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,442 |
| Top World Languages | 0 | - | 4.92 | 819,589 |
| Africa Map Quiz | 0 | - | 5.00 | 2,114,019 |
| Official Languages of South Africa | 0 | - | 4.56 | 26,135 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,179 |
| Australian Capitals | 0 | - | 4.92 | 62,690 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,665 |
| Native American Tribes in the US | 0 | - | 4.72 | 25,437 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,329 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,852 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,446,211 |
| Asia Map Quiz | 0 | - | 4.99 | 913,999 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,923 |
| Countries by Official Language | 0 | - | 4.95 | 194,534 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,459 |
| Places in their Native Language #2 | 0 | - | 4.81 | 133,575 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,379 |
| Countries in their Native Language | 0 | - | 4.99 | 198,090 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,257 |
| Countries of Africa | 0 | - | 5.00 | 2,528,648 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,534 |
| African East Coast | 0 | - | 4.96 | 95,757 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,568 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,422 |
| Australia Map Quiz | 0 | - | 4.95 | 343,723 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,244 |
| Pixelated Americas Map | 0 | - | 4.39 | 47,073 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,707 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,299 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,549 |
| South American Physical Geography | 0 | - | 4.58 | 18,325 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,417 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,248 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,694 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,600 |
| 75 Americans Named John | 0 | - | 4.41 | 23,885 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,953 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,086 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,078 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,561 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.72 | 32,962 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,558 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,107 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,336 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,611 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,731 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,705 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,345 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,360 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,878 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 46,800 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,121 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,286 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,185 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,628 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,556 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,855 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,412 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,830 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,860 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,729 |
| The Only European Country ... | 0 | - | 4.91 | 215,852 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,676 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,739 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,568 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,380,593 |
| Spanish to English Country Names | 0 | - | 4.86 | 32,814 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,303 |
| Top World Languages A-Z | 0 | - | 4.83 | 36,559 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,257 |
| German-Speaking Countries | 0 | - | 4.91 | 145,218 |
| Italian Name Translation | 0 | - | 4.82 | 46,299 |
| French-Speaking Countries | 0 | - | 4.85 | 270,115 |
| States of India | 0 | - | 4.94 | 192,420 |
| Officially Recognized Languages of India | 0 | - | 4.38 | 31,265 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,847 |
| Flags of Africa Quiz | 0 | - | 5.00 | 468,812 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,258 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,584 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,344 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,945 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,025 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,602 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,093 |
| The Only African Country ... | 0 | - | 4.98 | 128,882 |
| African Countries by a Single Clue | 0 | - | 4.92 | 68,038 |
| African Island Countries | 0 | - | 4.96 | 101,372 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,978 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,610 |
| Countries Closest to Africa | 0 | - | 4.96 | 156,952 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,088 |
| Flags of Oceania | 0 | - | 5.00 | 257,928 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 27,233 |
| Australian States and Territories | 0 | - | 4.96 | 141,615 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 145,121 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,221 |
| Australia True or False | 0 | - | 4.87 | 56,749 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,434 |
| Regions of New Zealand | 0 | - | 4.85 | 28,452 |
| Flags of North and South America | 0 | - | 4.99 | 371,626 |
| The Only American Country ... | 0 | - | 4.92 | 121,365 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,891 |
| Places Mentioned in the Song "Kokomo" | 0 | - | 4.44 | 17,003 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,926 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,098 |
| Which Island in the United States? | 0 | - | 4.29 | 29,407 |
| American Foods | 0 | - | 3.66 | 39,352 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,124 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,215 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,719 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,287 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,862 |
| Branches of the U.S. Military | 0 | - | 4.39 | 24,319 |
| Old West History | 0 | - | 4.33 | 15,256 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,515 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,911 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,705 |
| US States Quiz | 0 | - | 5.00 | 16,823,327 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,632 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,666 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,507 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,321 |
| US States with the Most Executions | 0 | - | 4.51 | 26,385 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,032 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 47,898 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,107 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,673 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,762 |
| 20 Most-Visited Places in Canada | 0 | - | 4.27 | 13,170 |
| Canadian Musical Acts by Two Songs | 0 | - | 4.02 | 28,499 |
| Canada Decoder | 0 | - | 4.12 | 18,701 |
