| Countries of South America with an Empty Map | 0 | - | 4.95 | 105,597 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.93 | 55,002 |
| States of Brazil | 0 | - | 4.98 | 90,006 |
| South America Map Quiz | 0 | - | 5.00 | 1,558,191 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,762 |
| Word Chain - South America | 0 | - | 4.51 | 24,017 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 324,503 |
| States of Mexico | 0 | - | 4.96 | 178,670 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,709 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,715 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,659,082 |
| Famous People from South America | 0 | - | 4.15 | 22,131 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 276,900 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,872 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,241 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,373 |
| Flags of North and South America | 0 | - | 4.99 | 377,974 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,839 |
| South American Physical Geography | 0 | - | 4.58 | 18,411 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,782 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,033,061 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,970 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,247 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,534 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 745,214 |
| The Only American Country ... | 0 | - | 4.92 | 122,335 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,553 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,418 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,939 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 65,278 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,951 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,955 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 76,043 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,173 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,321 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,145 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,614 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,801 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,865 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,938 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,888 |
| History of Mexico | 0 | - | 4.52 | 15,373 |
| Mexico States Map Quiz | 0 | - | 4.85 | 105,764 |
| South American Geography Quiz #2 | 0 | - | 4.40 | 44,323 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,929 |
| South America A-Z | 0 | - | 4.15 | 10,952 |
| Central American Countries | 0 | - | 4.98 | 157,511 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,684 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 150,995 |
| Famous Caribbean People | 0 | - | 4.37 | 12,668 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,580 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,543 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,947 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,156 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,807 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,261 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,260 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,205 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,521 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,569 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,660 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,642 |
| Pixelated United States Map | 0 | - | 4.89 | 94,913 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,702 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,568 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,168 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,412 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,442 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,493 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,531 |
| U.S. States By Population | 0 | - | 4.92 | 154,233 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,349 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,965 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,157 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,967 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,590 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,192 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,159 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,309 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,765 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,869 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,713 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,662 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,626 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,975 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,431 |
| Word Scramble - Asian Countries | 0 | - | 4.48 | 109,372 |
| Word Chain - Africa | 0 | - | 4.47 | 31,731 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 983,515 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 281,191 |
| Guyana Country Quiz | 0 | - | 4.50 | 22,959 |
| Venezuela Country Quiz | 0 | - | 4.51 | 30,770 |
| Paraguay Country Quiz | 0 | - | 4.54 | 25,430 |
| Bolivia Country Quiz | 0 | - | 4.63 | 26,425 |
| Suriname Country Quiz | 0 | - | 4.61 | 19,948 |
| American Foods | 0 | - | 3.66 | 39,452 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,465 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,992 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,868 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,567 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,095 |
| Canada Decoder | 0 | - | 4.07 | 18,782 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,175 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,951 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,620 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.96 | 243,382 |
| NBA Teams - One Minute Sprint | 0 | - | 4.54 | 156,834 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,456 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,967 |
| Belize Country Quiz | 0 | - | 4.85 | 21,112 |
| Largest Caribbean Islands | 0 | - | 4.07 | 16,803 |
| Saintly Islands of the Caribbean | 0 | - | 4.32 | 24,174 |
| Territories of the United States | 0 | - | 4.80 | 52,660 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,239 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,922 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 176,223 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,586 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 94,469 |
| New York City Geography | 0 | - | 4.43 | 33,198 |
| African-American Historical Figures | 0 | - | 4.18 | 17,308 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,927 |
| Europe Map Quiz | 0 | - | 5.00 | 4,792,531 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,560 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,233 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,502 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,460 |
| German Groups of Things | 0 | - | 4.47 | 38,663 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,685 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,762 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,379 |
| Famous People from Africa | 0 | - | 4.45 | 11,015 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,111 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,185 |
| Australian Capitals | 0 | - | 4.92 | 62,860 |
| Word Chain - Australia | 0 | - | 4.38 | 38,259 |
| South American Cities on the Map | 0 | - | 4.52 | 35,574 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,314 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,794 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,693 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,294 |
| United States Country Quiz | 0 | - | 4.43 | 102,322 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,097 |
| Canada Country Quiz | 0 | - | 4.55 | 133,151 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,673 |
| Canada A-Z | 0 | - | 4.73 | 32,990 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,839 |
| Official European Union Languages | 0 | - | 4.97 | 240,276 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,788 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,342 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,270 |
| Asia Map Quiz | 0 | - | 4.99 | 926,527 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,249 |
| Africa Map Quiz | 0 | - | 5.00 | 2,130,512 |
| World Capitals - One Minute Sprint | 0 | - | 4.21 | 236,972 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,146 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,584 |
| Australia Map Quiz | 0 | - | 4.95 | 346,444 |
| Pixelated Americas Map | 0 | - | 4.39 | 47,492 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,646 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 750,255 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,778 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,708 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,153 |
| New England States | 0 | - | 4.51 | 59,908 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,109 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,134 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,208 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,331 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,180 |
| U.S. States by Borders | 0 | - | 4.61 | 35,512 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,712 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,390 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,478 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,975 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,265 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,850 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,523 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,538 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,897 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,443 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 85,331 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,616 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 83,149 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,322 |
| Canadian Geography on the Map | 0 | - | 4.55 | 26,446 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,283 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,976 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,163 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,520 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,933 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,442 |
| The Only European Country ... | 0 | - | 4.91 | 219,513 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,793 |
| Word Chain - France | 0 | - | 4.38 | 42,958 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,094 |
| British Groups of Things | 0 | - | 4.26 | 83,038 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,123 |
| Word Chain - Asia | 0 | - | 4.34 | 29,403 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 100,130 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,925 |
