| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,240 |
| Peru True or False? | 0 | - | 4.58 | 15,291 |
| South America Map Quiz | 0 | - | 5.00 | 1,553,045 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,861 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,793 |
| Word Chain - South America | 0 | - | 4.51 | 23,957 |
| United States Map Quiz | 0 | - | 4.98 | 4,166,126 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,816 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,569 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,304 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,680 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,027,657 |
| North America Map Quiz | 0 | - | 4.98 | 250,107 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,882 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,604 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,578 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,409 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,390 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,788 |
| Famous People from South America | 0 | - | 4.15 | 22,036 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,379 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,964 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,557 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,711 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,488 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,741 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,650 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,130 |
| U.S. History Timeline Quiz | 0 | - | 4.96 | 57,074 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,052 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,648 |
| States of Mexico | 0 | - | 4.96 | 177,335 |
| History of Mexico | 0 | - | 4.58 | 15,346 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,403 |
| States of Brazil | 0 | - | 4.97 | 89,013 |
| Central American Countries | 0 | - | 4.98 | 156,985 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,076 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 149,510 |
| New York True or False? | 0 | - | 4.53 | 33,894 |
| Austria... or Australia? | 0 | - | 4.68 | 104,605 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,323 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,751 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,883 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,415 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,026 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,503 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,723 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,509 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,839 |
| Iran... or Iraq? | 0 | - | 4.32 | 33,626 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 221,435 |
| Most Common High School Mascots | 0 | - | 4.47 | 32,232 |
| Florida True or False? | 0 | - | 4.48 | 28,737 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,763 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,773 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,854 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,634 |
| Which Canadian Province? | 0 | - | 4.75 | 9,765 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,328 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,824 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,730 |
| Famous Caribbean People | 0 | - | 4.37 | 12,648 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 24,099 |
| Territories of the United States | 0 | - | 4.80 | 52,515 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,786 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,866 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,361 |
| Name a Valid Answer - United States #1 | 0 | - | 4.62 | 94,223 |
| Three Real and One Fake - U.S. Geography | 0 | - | 4.34 | 29,414 |
| California Multiple Choice | 0 | - | 4.40 | 28,141 |
| Florida Multiple Choice | 0 | - | 4.33 | 10,193 |
| New York City Geography | 0 | - | 4.43 | 33,151 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,769 |
| Europe Map Quiz | 0 | - | 5.00 | 4,776,920 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,425 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,107 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,868 |
| Oceania Map Quiz | 0 | - | 4.98 | 656,985 |
| Australian Capitals | 0 | - | 4.92 | 62,791 |
| Three Real and One Fake - U.S. History | 0 | - | 4.33 | 25,812 |
| U.S. History Multiple Choice #2 | 0 | - | 4.32 | 25,103 |
| U.S. History Multiple Choice #1 | 0 | - | 4.29 | 22,272 |
| U.S. History Multiple Choice #4 | 0 | - | 4.24 | 25,637 |
| U.S. History True or False #1 | 0 | - | 4.36 | 31,286 |
| Native American Tribes in the US | 0 | - | 4.74 | 25,651 |
| U.S. History Multiple Choice #5 | 0 | - | 4.26 | 11,580 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,480 |
| Official European Union Languages | 0 | - | 4.97 | 239,252 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,318 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,833 |
| Which European Country - Multiple Choice | 0 | - | 4.51 | 84,514 |
| Which Country of the United Kingdom? | 0 | - | 4.58 | 39,474 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,606 |
| Asia Map Quiz | 0 | - | 4.99 | 921,847 |
| Which Asian Country? | 0 | - | 4.64 | 57,670 |
| Africa Map Quiz | 0 | - | 5.00 | 2,124,427 |
| Which African Country? | 0 | - | 4.58 | 36,421 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,108 |
| Australia Map Quiz | 0 | - | 4.95 | 345,574 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,294 |
| Pixelated Americas Map | 0 | - | 4.39 | 47,331 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,821 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,777 |
| South American Physical Geography | 0 | - | 4.58 | 18,383 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,555 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,400 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,744 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,693 |
| 75 Americans Named John | 0 | - | 4.41 | 23,944 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.12 | 41,105 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,154 |
| The Most Recent... United States | 0 | - | 4.46 | 18,528 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,208 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,814 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,141 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,778 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,345 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,450 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,784 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,179 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,109 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,514 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,861 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,145 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 47,013 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,230 |
| Ten Most Rectangular U.S. States | 0 | - | 4.54 | 71,607 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,388 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,258 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,196 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,801 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 28,119 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,055 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,487 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,180 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 116,473 |
| The Only European Country ... | 0 | - | 4.91 | 218,002 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,984 |
| France True or False? | 0 | - | 4.44 | 40,015 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,765 |
| Ireland True or False? | 0 | - | 4.57 | 49,731 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,969 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,244 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,027 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,584 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,737 |
| China Multiple Choice | 0 | - | 4.50 | 37,362 |
| Countries of Africa | 0 | - | 5.00 | 2,550,093 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,487 |
| African East Coast | 0 | - | 4.96 | 96,462 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,332 |
| South Africa Multiple Choice | 0 | - | 4.55 | 27,525 |
| Flags of Oceania | 0 | - | 5.00 | 261,324 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 27,501 |
| Australian States and Territories | 0 | - | 4.96 | 142,484 |
| Australia Cities Map Quiz | 0 | - | 4.82 | 146,168 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,414 |
| Australia True or False | 0 | - | 4.87 | 57,023 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,814 |
| Regions of New Zealand | 0 | - | 4.84 | 28,637 |
| Flags of North and South America | 0 | - | 4.99 | 375,275 |
| The Only American Country ... | 0 | - | 4.92 | 121,957 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,417 |
| Places Mentioned in the Song "Kokomo" | 0 | - | 4.44 | 17,054 |
| South American Geography Quiz #2 | 0 | - | 4.40 | 42,946 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,113 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,166 |
| Which Island in the United States? | 0 | - | 4.29 | 29,658 |
| American Foods | 0 | - | 3.66 | 39,421 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,136 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,306 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.27 | 14,792 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,393 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,950 |
| U.S. Analogies | 0 | - | 4.27 | 19,705 |
| U.S. Groups of Five | 0 | - | 4.21 | 21,653 |
| Branches of the U.S. Military | 0 | - | 4.39 | 24,440 |
| Old West History | 0 | - | 4.34 | 15,290 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,529 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,966 |
| US States Quiz | 0 | - | 5.00 | 16,945,497 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,702 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,753 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,657 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,480 |
| US States with the Most Executions | 0 | - | 4.51 | 26,415 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,122 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,159 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,203 |
| 20 Most-Visited Places in Canada | 0 | - | 4.27 | 13,224 |
| Canadian Musical Acts by Two Songs | 0 | - | 4.03 | 28,778 |
| Canada Decoder | 0 | - | 4.07 | 18,745 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,310 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,027 |
| Name a Valid Answer - United States #2 | 0 | - | 4.16 | 27,405 |
| European Countries Ending in "IA" | 0 | - | 4.96 | 68,750 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,458 |
| Sahel Countries on a Map | 0 | - | 4.99 | 21,418 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,251,790 |
| Celtic Nations | 0 | - | 4.69 | 47,042 |
