| States of Mexico | 0 | - | 4.96 | 178,393 |
| Countries of South America with an Empty Map | 0 | - | 4.95 | 105,536 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.93 | 54,930 |
| States of Brazil | 0 | - | 4.97 | 89,852 |
| United States Map Quiz | 0 | - | 4.98 | 4,172,176 |
| Flags of North and South America | 0 | - | 4.99 | 377,386 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,725 |
| South America Map Quiz | 0 | - | 5.00 | 1,557,165 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,770 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,032,201 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,516 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,839 |
| The Only American Country ... | 0 | - | 4.92 | 122,249 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,701 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,157 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,862 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 65,165 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,911 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,865 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,981 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,065 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,289 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,799 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,754 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,884 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,845 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,865 |
| History of Mexico | 0 | - | 4.52 | 15,367 |
| Mexico States Map Quiz | 0 | - | 4.85 | 105,699 |
| Word Chain - South America | 0 | - | 4.51 | 24,008 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,650 |
| Central American Countries | 0 | - | 4.98 | 157,392 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,631 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 150,776 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,523 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,458 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,612 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,674 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,122 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,760 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,634 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,423 |
| South American Physical Geography | 0 | - | 4.58 | 18,408 |
| Pixelated United States Map | 0 | - | 4.88 | 94,847 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,616 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,487 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,113 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,331 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,351 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,402 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,433 |
| U.S. States By Population | 0 | - | 4.92 | 154,193 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,284 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,922 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,112 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,556 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,138 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,090 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,267 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,718 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,848 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,677 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,637 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,534 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,688 |
| Famous People from South America | 0 | - | 4.15 | 22,117 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,739 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,513 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,060 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,123 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,814 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,484 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,965 |
| South America A-Z | 0 | - | 4.15 | 10,949 |
| Belize Country Quiz | 0 | - | 4.85 | 21,103 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,795 |
| Famous Caribbean People | 0 | - | 4.37 | 12,665 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 24,157 |
| Territories of the United States | 0 | - | 4.80 | 52,636 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,903 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 176,155 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,545 |
| New York City Geography | 0 | - | 4.43 | 33,191 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,892 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,915 |
| NBA 2K Highest Rated Players | 0 | - | 4.45 | 336,101 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,760 |
| Australian Capitals | 0 | - | 4.92 | 62,841 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,311 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,760 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,681 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,284 |
| United States Country Quiz | 0 | - | 4.43 | 102,247 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,079 |
| Canada Country Quiz | 0 | - | 4.55 | 133,087 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,633 |
| Canada A-Z | 0 | - | 4.73 | 32,978 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,781 |
| Official European Union Languages | 0 | - | 4.97 | 239,888 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,710 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,083 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,813 |
| Asia Map Quiz | 0 | - | 4.99 | 925,714 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,226 |
| Africa Map Quiz | 0 | - | 5.00 | 2,129,448 |
| NBA 2K Video Game Covers | 0 | - | 4.41 | 90,681 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,512 |
| Australia Map Quiz | 0 | - | 4.95 | 346,279 |
| Pixelated Americas Map | 0 | - | 4.39 | 47,467 |
| South American Geography Quiz #2 | 0 | - | 4.41 | 44,216 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,915 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,635 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,775 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,587 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,132 |
| New England States | 0 | - | 4.51 | 59,905 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,076 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,126 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,179 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,301 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,158 |
| U.S. States by Borders | 0 | - | 4.62 | 35,492 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,693 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,358 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,457 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,946 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,239 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,837 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,480 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,525 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,878 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,392 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,293 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,593 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 83,100 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,300 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,438 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,091 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,952 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,956 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,351 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,340 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,279 |
| The Only European Country ... | 0 | - | 4.91 | 219,239 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,635 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,066 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 100,014 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,535 |
| Countries of Africa | 0 | - | 5.00 | 2,561,763 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 48,068 |
| African East Coast | 0 | - | 4.96 | 96,826 |
| Western Africa Map Quiz | 0 | - | 4.98 | 74,693 |
| Australian States and Territories | 0 | - | 4.96 | 142,919 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,514 |
| Australia True or False | 0 | - | 4.87 | 57,168 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 113,029 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,902 |
| Guyana Country Quiz | 0 | - | 4.50 | 22,939 |
| Venezuela Country Quiz | 0 | - | 4.51 | 30,751 |
| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,788 |
| Paraguay Country Quiz | 0 | - | 4.54 | 25,421 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,404 |
| Suriname Country Quiz | 0 | - | 4.61 | 19,942 |
| El Salvador Country Quiz | 0 | - | 4.63 | 31,900 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,856 |
| Jamaica Country Quiz | 0 | - | 4.59 | 35,254 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,823 |
| North America Map Quiz | 0 | - | 4.98 | 252,292 |
| Top U.S. Universities | 0 | - | 4.15 | 145,884 |
| Largest United States Airlines | 0 | - | 4.39 | 55,169 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,998 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,026 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,740 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,304 |
| U.S. States by Governor | 0 | - | 4.43 | 18,115 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,771 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,482 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,784 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,911 |
| Events in U.S. History | 0 | - | 4.41 | 28,833 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,205 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,789 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 75,070 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,662 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.70 | 61,201 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,573 |
| Flyover States | 0 | - | 4.53 | 29,602 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,278 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,422 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.62 | 45,275 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 129,001 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,803 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,989 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,728 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,549 |
| US States with the Most Executions | 0 | - | 4.51 | 26,427 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,170 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,282 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.40 | 47,104 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,278 |
