| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,206 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,025 |
| States of Brazil | 0 | - | 4.98 | 86,460 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,604 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,387 |
| Word Chain - South America | 0 | - | 4.51 | 23,768 |
| States of Mexico | 0 | - | 4.95 | 173,466 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,418 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,246 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,622 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,726 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,559 |
| Famous Caribbean People | 0 | - | 4.37 | 12,567 |
| Famous People from Africa | 0 | - | 4.45 | 10,863 |
| Flags of North and South America | 0 | - | 4.99 | 367,720 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,300 |
| South American Physical Geography | 0 | - | 4.58 | 18,273 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,012,367 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,131 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,214 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,249 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,016 |
| The Only American Country ... | 0 | - | 4.92 | 120,808 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,495 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,935 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,030 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,050 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,988 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,402 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,905 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,110 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,526 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,860 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 319,433 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,755 |
| Uruguay Country Quiz | 0 | - | 4.83 | 31,363 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,366 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,144 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,130 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,949 |
| Mexican Foods | 0 | - | 4.07 | 14,612 |
| History of Mexico | 0 | - | 4.58 | 15,236 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,856 |
| South American Geography Quiz #2 | 0 | - | 4.62 | 39,204 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,476 |
| South America A-Z | 0 | - | 4.13 | 10,840 |
| Central American Countries | 0 | - | 4.98 | 155,120 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 146,046 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,127 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,696 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,086 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,550 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,667 |
| African-American Historical Figures | 0 | - | 4.18 | 17,128 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,671 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,346 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,266 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,775 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,618 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,090 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,130 |
| Pixelated United States Map | 0 | - | 4.89 | 93,528 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,530 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,909 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,796 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,419 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,468 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,729 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,980 |
| U.S. States By Population | 0 | - | 4.92 | 152,420 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,467 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,903 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,933 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,592 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,782 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,931 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,922 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,099 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,527 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,087 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,681 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,864 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,403 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,516 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,030 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 108,235 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 273,182 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,628 |
| Guyana Country Quiz | 0 | - | 4.49 | 22,606 |
| Venezuela Country Quiz | 0 | - | 4.50 | 30,412 |
| Paraguay Country Quiz | 0 | - | 4.53 | 25,097 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,059 |
| Suriname Country Quiz | 0 | - | 4.60 | 19,677 |
| American Foods | 0 | - | 3.66 | 39,282 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,200 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,808 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,649 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,131 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,965 |
| Canada Decoder | 0 | - | 4.12 | 18,653 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,885 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,189 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,813 |
| Word Chain - Africa | 0 | - | 4.47 | 31,445 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,886 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,909 |
| Belize Country Quiz | 0 | - | 4.85 | 20,812 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,595 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 23,934 |
| Territories of the United States | 0 | - | 4.79 | 52,160 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,160 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,399 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,607 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,768 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,473 |
| New York City Geography | 0 | - | 4.42 | 32,950 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,251 |
| Europe Map Quiz | 0 | - | 5.00 | 4,733,035 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,010 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,639 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,964 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,004 |
| German Groups of Things | 0 | - | 4.46 | 38,311 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,333 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,342 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,160 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,990 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,675 |
| Australian Capitals | 0 | - | 4.92 | 62,596 |
| Word Chain - Australia | 0 | - | 4.37 | 38,017 |
| South American Cities on the Map | 0 | - | 4.57 | 35,252 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,350 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,275 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,280 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,482 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,082 |
| United States Country Quiz | 0 | - | 4.43 | 100,653 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,616 |
| Canada Country Quiz | 0 | - | 4.55 | 131,770 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,658 |
| Canada A-Z | 0 | - | 4.73 | 32,654 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,613 |
| Official European Union Languages | 0 | - | 4.97 | 236,999 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,736 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,409 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,300 |
| Asia Map Quiz | 0 | - | 4.99 | 907,506 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,666 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,589,556 |
| Countries of Africa | 0 | - | 5.00 | 2,509,471 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,865 |
| African East Coast | 0 | - | 4.96 | 95,099 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,990 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,984 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,839 |
| Australia Map Quiz | 0 | - | 4.94 | 342,599 |
| Pixelated Americas Map | 0 | - | 4.40 | 46,830 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,114 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,412 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,632 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 207,939 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,610 |
| New England States | 0 | - | 4.51 | 59,711 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,504 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,891 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,355 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,671 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,675 |
| U.S. States by Borders | 0 | - | 4.63 | 35,089 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,256 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,153 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,005 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,336 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,799 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,425 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 74,903 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,222 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,431 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,028 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,384 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,164 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 81,901 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,601 |
| Most-Visited Countries by Canadians | 0 | - | 4.77 | 39,123 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,197 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,251 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,238 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,115 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,442 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,413 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,672 |
| The Only European Country ... | 0 | - | 4.91 | 213,995 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,657 |
| Word Chain - France | 0 | - | 4.38 | 42,587 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,577 |
| British Groups of Things | 0 | - | 4.25 | 82,701 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,952 |
| Word Chain - Asia | 0 | - | 4.34 | 29,224 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,537 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,401 |
