| Countries of South America with an Empty Map | 0 | - | 4.95 | 105,664 |
| South America Map Quiz | 0 | - | 5.00 | 1,558,959 |
| Word Chain - South America | 0 | - | 4.51 | 24,029 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,269 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 113,100 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 145,024 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,926 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,795 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,943 |
| North America Map Quiz | 0 | - | 4.98 | 252,996 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,048 |
| Canada Provinces and Territories | 0 | - | 5.00 | 347,354 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,629 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,695 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,803 |
| Famous People from South America | 0 | - | 4.15 | 22,148 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,613 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 59,022 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 95,351 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 65,394 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,987 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 241,032 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 76,108 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,310 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,353 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,923 |
| States of Mexico | 0 | - | 4.96 | 178,920 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.93 | 55,097 |
| States of Brazil | 0 | - | 4.98 | 90,127 |
| Central American Countries | 0 | - | 4.98 | 157,618 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,716 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 151,231 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,427 |
| History of Mexico | 0 | - | 4.52 | 15,379 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,240 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,879 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,198 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,211 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,341 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,794 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,890 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,742 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 68,088 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 223,277 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,726 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,585 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,231 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 281,126 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,752 |
| Australian Capitals | 0 | - | 4.92 | 62,883 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,812 |
| Famous Caribbean People | 0 | - | 4.37 | 12,670 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 24,182 |
| Territories of the United States | 0 | - | 4.80 | 52,688 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,944 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 176,295 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,615 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 94,515 |
| New York City Geography | 0 | - | 4.43 | 33,209 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,957 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,887 |
| Official European Union Languages | 0 | - | 4.97 | 240,449 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,876 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,026 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,769 |
| Native American Tribes in the US | 0 | - | 4.74 | 25,768 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,557 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,690 |
| Asia Map Quiz | 0 | - | 4.99 | 927,155 |
| Africa Map Quiz | 0 | - | 5.00 | 2,131,367 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,641 |
| Australia Map Quiz | 0 | - | 4.95 | 346,607 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,333 |
| Pixelated Americas Map | 0 | - | 4.39 | 47,541 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,890 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,942 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,658 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,483 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,784 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,747 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.12 | 41,224 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,999 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,281 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,859 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,548 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,545 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,915 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,483 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,363 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,624 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 83,188 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,352 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,457 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,475 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 93,011 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,358 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,684 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,412 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,597 |
| The Only European Country ... | 0 | - | 4.91 | 219,748 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,916 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,120 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 100,236 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,388,261 |
| Countries of Africa | 0 | - | 5.00 | 2,566,263 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,315 |
| African East Coast | 0 | - | 4.96 | 96,963 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,862 |
| Australian States and Territories | 0 | - | 4.96 | 143,122 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,558 |
| Australia True or False | 0 | - | 4.87 | 57,237 |
| Flags of North and South America | 0 | - | 4.99 | 378,455 |
| South American Physical Geography | 0 | - | 4.58 | 18,415 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,813 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,226 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.62 | 45,303 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,304 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,317 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,266 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,262,398 |
| Celtic Nations | 0 | - | 4.61 | 47,130 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,709 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,845 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,588 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,417 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,948 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,170 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,332 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,745 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,831 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,431 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,953 |
| Slavic Countries | 0 | - | 4.96 | 112,555 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,773 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,528 |
| Counties of England | 0 | - | 4.97 | 804,696 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 363,005 |
| Flags of Asia Quiz | 0 | - | 4.99 | 622,380 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,977 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,786 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 100,113 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,372 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 128,087 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,549 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 72,274 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,976 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.92 | 50,855 |
| Countries of the Middle East | 0 | - | 4.96 | 203,368 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,827 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,599 |
| Flags of Africa Quiz | 0 | - | 5.00 | 479,586 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 219,258 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 118,123 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,768 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.95 | 47,849 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 155,049 |
| Top African Languages on a Map | 0 | - | 4.94 | 75,561 |
| African Island Countries | 0 | - | 4.96 | 102,792 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,968 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,836 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,541 |
| Flags of Oceania | 0 | - | 5.00 | 263,691 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.95 | 27,829 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 146,738 |
| Australia Country Quiz | 0 | - | 4.43 | 69,904 |
| Australia... or New Zealand? | 0 | - | 4.83 | 62,140 |
| Regions of New Zealand | 0 | - | 4.84 | 28,814 |
| The Only American Country ... | 0 | - | 4.92 | 122,398 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,813 |
| South American Geography Quiz #2 | 0 | - | 4.40 | 44,406 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,824 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,214 |
| Which Island in the United States? | 0 | - | 4.29 | 29,846 |
| American Foods | 0 | - | 3.66 | 39,461 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,162 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,354 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.27 | 14,841 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,471 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,999 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,556 |
| Old West History | 0 | - | 4.34 | 15,311 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,540 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 20,000 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,813 |
| US States Quiz | 0 | - | 5.00 | 17,031,128 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,748 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,829 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,752 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,575 |
| US States with the Most Executions | 0 | - | 4.51 | 26,433 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,191 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,341 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.40 | 47,145 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,278 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,844 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,950 |
| 20 Most-Visited Places in Canada | 0 | - | 4.27 | 13,269 |
| Canadian Musical Acts by Two Songs | 0 | - | 4.07 | 28,972 |
| Canada Decoder | 0 | - | 4.07 | 18,786 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,650 |
