| Countries of South America with an Empty Map | 0 | - | 4.95 | 105,614 |
| South America Map Quiz | 0 | - | 5.00 | 1,558,349 |
| Word Chain - South America | 0 | - | 4.51 | 24,021 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,470 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 113,078 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,967 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,857 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,786 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,232 |
| North America Map Quiz | 0 | - | 4.98 | 252,756 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,038 |
| Canada Provinces and Territories | 0 | - | 5.00 | 347,082 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,335 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,659 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,801 |
| Famous People from South America | 0 | - | 4.15 | 22,135 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,463 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,960 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 95,305 |
| 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 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,895 |
| States of Mexico | 0 | - | 4.96 | 178,719 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.93 | 55,016 |
| States of Brazil | 0 | - | 4.98 | 90,035 |
| 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 | 151,044 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,411 |
| History of Mexico | 0 | - | 4.52 | 15,375 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,028 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,871 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,165 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,171 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,316 |
| 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-Spoken Languages of the United States | 0 | - | 4.52 | 223,102 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,712 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,434 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,186 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 281,022 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,653 |
| Australian Capitals | 0 | - | 4.92 | 62,861 |
| 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 |
| 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 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 94,477 |
| New York City Geography | 0 | - | 4.43 | 33,202 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,932 |
| 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 Map Quiz | 0 | - | 5.00 | 4,793,163 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,290 |
| Native American Tribes in the US | 0 | - | 4.74 | 25,755 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,391 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,383 |
| Asia Map Quiz | 0 | - | 4.99 | 926,686 |
| Africa Map Quiz | 0 | - | 5.00 | 2,130,710 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,599 |
| Australia Map Quiz | 0 | - | 4.95 | 346,482 |
| Largest Land Animals of the Americas | 0 | - | 4.39 | 20,326 |
| Pixelated Americas Map | 0 | - | 4.39 | 47,495 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,881 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,932 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,647 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,479 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,779 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,743 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.12 | 41,214 |
| 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 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,447 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,332 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,982 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,219 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,583 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,379 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,473 |
| The Only European Country ... | 0 | - | 4.91 | 219,565 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,817 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,103 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 100,166 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,388,011 |
| Countries of Africa | 0 | - | 5.00 | 2,564,569 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,248 |
| African East Coast | 0 | - | 4.96 | 96,925 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,806 |
| Australian States and Territories | 0 | - | 4.96 | 143,060 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,545 |
| Australia True or False | 0 | - | 4.87 | 57,212 |
| Flags of North and South America | 0 | - | 4.99 | 378,109 |
| South American Physical Geography | 0 | - | 4.58 | 18,412 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,800 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,218 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.62 | 45,291 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,298 |
| Bahamas Country Quiz | 0 | - | 4.63 | 19,311 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,240 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,261,309 |
| Celtic Nations | 0 | - | 4.61 | 47,127 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,139 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,776 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,525 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,244 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,904 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,131 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,171 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,494 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,734 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,359 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,910 |
| Slavic Countries | 0 | - | 4.96 | 112,506 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,749 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,509 |
| Counties of England | 0 | - | 4.97 | 804,208 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,624 |
| Flags of Asia Quiz | 0 | - | 4.99 | 621,869 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,939 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,719 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 100,074 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,321 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 128,006 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,478 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 72,218 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,889 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.92 | 50,788 |
| Countries of the Middle East | 0 | - | 4.96 | 203,259 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,811 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,573 |
| Flags of Africa Quiz | 0 | - | 5.00 | 479,059 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 219,151 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 118,058 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,692 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.95 | 47,493 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,957 |
| Top African Languages on a Map | 0 | - | 4.94 | 75,469 |
| African Island Countries | 0 | - | 4.96 | 102,739 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,868 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,796 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,534 |
| Flags of Oceania | 0 | - | 5.00 | 263,454 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.95 | 27,803 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 146,680 |
| Australia Country Quiz | 0 | - | 4.43 | 69,888 |
| Australia... or New Zealand? | 0 | - | 4.83 | 62,110 |
| Regions of New Zealand | 0 | - | 4.84 | 28,799 |
| The Only American Country ... | 0 | - | 4.92 | 122,347 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,772 |
| South American Geography Quiz #2 | 0 | - | 4.40 | 44,346 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,650 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,209 |
| Which Island in the United States? | 0 | - | 4.29 | 29,834 |
| American Foods | 0 | - | 3.66 | 39,455 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,159 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,351 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.27 | 14,838 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,467 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,997 |
| Branches of the U.S. Military | 0 | - | 4.40 | 24,549 |
| Old West History | 0 | - | 4.34 | 15,308 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,538 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,994 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,801 |
| US States Quiz | 0 | - | 5.00 | 17,021,714 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,746 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,814 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,738 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,567 |
| US States with the Most Executions | 0 | - | 4.51 | 26,430 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,184 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,319 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.40 | 47,136 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,272 |
| U.S. Geography True or False #1 | 0 | - | 4.53 | 28,839 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,943 |
| 20 Most-Visited Places in Canada | 0 | - | 4.27 | 13,263 |
| Canadian Musical Acts by Two Songs | 0 | - | 4.07 | 28,952 |
| Canada Decoder | 0 | - | 4.07 | 18,783 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,613 |
