| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,805 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 141,410 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,301 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 109,287 |
| United States Map Quiz | 0 | - | 4.98 | 4,170,878 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,301 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,122,433 |
| 7 Deadly Sins | 0 | - | 4.88 | 403,959 |
| Fast Math - Addition | 0 | - | 4.87 | 524,849 |
| Disney Animated Characters | 0 | - | 4.88 | 602,846 |
| Random Symbol to Element | 0 | - | 4.88 | 93,895 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,976 |
| Flags of North and South America | 0 | - | 4.99 | 376,796 |
| Latin American Countries Map Quiz | 0 | - | 4.98 | 130,620 |
| South America Map Quiz | 0 | - | 5.00 | 1,556,428 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,031,080 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,513 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,049 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 644,504 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,501 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,004 |
| Planets of the Solar System Quiz | 0 | - | 4.93 | 1,102,305 |
| Fruits: No Vowels | 0 | - | 4.81 | 100,442 |
| Random Geographic Groups of Five | 0 | - | 4.93 | 115,355 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 218,853 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,722 |
| Random Geographic Groups of Seven | 0 | - | 4.92 | 46,769 |
| The Only American Country ... | 0 | - | 4.92 | 122,200 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,643 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 904,946 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,803 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,989 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,872 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,923 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,971 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,248 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,793 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,657 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,987 |
| Random Countries by Borders | 0 | - | 4.99 | 83,071 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,578 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,001 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,126 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,068 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,683 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,602 |
| Canada A-Z | 0 | - | 4.73 | 32,964 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 324,120 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 387,727 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,820 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,793 |
| States of Mexico | 0 | - | 4.96 | 178,183 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,581 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,477 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,778 |
| Word Chain - South America | 0 | - | 4.51 | 24,002 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,556 |
| States of Brazil | 0 | - | 4.97 | 89,655 |
| Central American Countries | 0 | - | 4.98 | 157,295 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,575 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 150,469 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,625 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,453 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 749,670 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,373 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,510 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,377 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,090 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,709 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,847 |
| Fast Math - Multiplication | 0 | - | 4.73 | 1,166,990 |
| Fast Math - Double That Number! | 0 | - | 4.77 | 616,727 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 139,924 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,601 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 94,982 |
| Pixelated United States Map | 0 | - | 4.88 | 94,794 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,513 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,424 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,056 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,248 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,272 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,321 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,337 |
| U.S. States By Population | 0 | - | 4.92 | 154,116 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,199 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,873 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,055 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,847 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,532 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,079 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,980 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,211 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,665 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,813 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,642 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,609 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,392 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,740 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,403 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,841 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 276,664 |
| Word Chain - Africa | 0 | - | 4.47 | 31,713 |
| Literary Quotes #1 | 0 | - | 4.49 | 33,754 |
| Fast Decimal to Binary Conversion | 0 | - | 4.69 | 43,344 |
| Random Countries with Letters Missing | 0 | - | 4.51 | 97,569 |
| Random Countries Hidden in the World Map | 0 | - | 4.82 | 114,417 |
| Vegetables: No Vowels | 0 | - | 4.74 | 74,408 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 122,945 |
| Famous People from South America | 0 | - | 4.15 | 22,099 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,152 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,017 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,444 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,980 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,632 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,434 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,016 |
| Canada Decoder | 0 | - | 4.07 | 18,767 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,060 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 42,978 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,625 |
| Africa A-Z | 0 | - | 4.57 | 46,763 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,316 |
| "Of Something" Book Titles | 0 | - | 4.45 | 48,264 |
| Famous Lines of Poetry #1 | 0 | - | 4.55 | 34,353 |
| Fast Math - Subtraction Quiz | 0 | - | 4.55 | 67,614 |
| Random Geography General Knowledge Quiz | 0 | - | 4.46 | 135,981 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,963 |
| South America A-Z | 0 | - | 4.15 | 10,945 |
| Belize Country Quiz | 0 | - | 4.85 | 21,080 |
| Famous Caribbean People | 0 | - | 4.37 | 12,660 |
| Territories of the United States | 0 | - | 4.80 | 52,617 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,233 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,882 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 176,080 |
| Name a Valid Answer - United States #1 | 0 | - | 4.62 | 94,378 |
| New York City Geography | 0 | - | 4.43 | 33,185 |
| African-American Historical Figures | 0 | - | 4.18 | 17,285 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,860 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,073 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,411 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,784 |
| European Geography By Letter - D | 0 | - | 4.50 | 115,613 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,976 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,403 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,055 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,536 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,943 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,509 |
| Europe Map Quiz | 0 | - | 5.00 | 4,787,092 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,370 |
| Famous Germans | 0 | - | 4.50 | 55,781 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,349 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,445 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,054 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,650 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,182 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,644 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,306 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,287 |
| Middle East A-Z | 0 | - | 4.47 | 46,235 |
| Famous People from Africa | 0 | - | 4.45 | 11,005 |
| Books with Names in the Title #2 | 0 | - | 4.42 | 54,816 |
| Religion Analogies | 0 | - | 4.38 | 53,969 |
| Word Scramble - Deities | 0 | - | 4.52 | 10,510 |
| Chess Pieces (With Board and Pictures!) | 0 | - | 4.50 | 78,670 |
| Disney Villains | 0 | - | 4.41 | 166,040 |
| Characters from Books #2 | 0 | - | 4.42 | 80,133 |
| Books by Clue #2 | 0 | - | 4.43 | 26,772 |
| Three Letter Acronyms #1 | 0 | - | 4.14 | 67,742 |
| Four-Letter Acronyms | 0 | - | 4.32 | 113,934 |
| Three-Letter Acronyms #2 | 0 | - | 4.23 | 46,524 |
| Astronomy Decoder | 0 | - | 4.48 | 38,218 |
| U.S. Chain Restaurant Menu | 0 | - | 4.08 | 139,346 |
| World Countries by 10 Category Elimination #2 | 0 | - | 4.48 | 71,447 |
| Category Elimination - Countries #5 | 0 | - | 4.69 | 145,357 |
| Category Elimination - Elements | 0 | - | 4.61 | 54,099 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,325,295 |
| Oceania Map Quiz | 0 | - | 4.98 | 659,166 |
| Australian Capitals | 0 | - | 4.92 | 62,827 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,796 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,725 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,671 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,274 |
| United States Country Quiz | 0 | - | 4.43 | 102,171 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,061 |
| Canada Country Quiz | 0 | - | 4.55 | 133,027 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,598 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,700 |
| Official European Union Languages | 0 | - | 4.97 | 239,736 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,608 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,791 |
| Word Scramble - European Cities | 0 | - | 3.84 | 18,969 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,356 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,452,292 |
| Asia Map Quiz | 0 | - | 4.99 | 924,862 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,194 |
| A Quiz About Islam | 0 | - | 4.32 | 48,610 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 35,165 |
| Africa Map Quiz | 0 | - | 5.00 | 2,128,310 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,651,637 |
