| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,308 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,540 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,303 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,707 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,418 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,627 |
| US States Quiz | 0 | - | 5.00 | 16,720,223 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,455 |
| States of Mexico | 0 | - | 4.95 | 173,631 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,925 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,220 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,739 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,239 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,501 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,561 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,692 |
| Pixelated United States Map | 0 | - | 4.89 | 93,579 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,598 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,948 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,397 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,851 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,476 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,514 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,808 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,063 |
| U.S. States By Population | 0 | - | 4.92 | 152,467 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,517 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,937 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,634 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,802 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,962 |
| Canada A-Z | 0 | - | 4.73 | 32,669 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,450 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,839 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,526 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,692 |
| US States with an Empty Map | 0 | - | 5.00 | 619,475 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,157 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,991 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 94,865 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,068 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,937 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,977 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,784 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,183 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,595 |
| Last Names by Country of Origin | 0 | - | 4.64 | 155,959 |
| Flags of North and South America | 0 | - | 4.99 | 368,099 |
| Belize Country Quiz | 0 | - | 4.85 | 20,826 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,400 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,698 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,784 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,469 |
| California Groups of Things | 0 | - | 4.25 | 45,286 |
| New York Groups of Things | 0 | - | 4.38 | 59,963 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,269 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,294 |
| NFL Football Last Names | 0 | - | 4.43 | 170,610 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,026 |
| The Only American Country ... | 0 | - | 4.92 | 120,847 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,487 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,089 |
| United States Country Quiz | 0 | - | 4.43 | 100,707 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,637 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,091 |
| Movies by State | 0 | - | 4.27 | 40,453 |
| Canada Country Quiz | 0 | - | 4.55 | 131,815 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,688 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,466 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,684 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,147 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,808 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,696 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,183 |
| Name a Valid African Country | 0 | - | 4.98 | 153,057 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,158 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,772 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,283 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,034 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,326 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,208 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,482 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,074 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,465 |
| States of Brazil | 0 | - | 4.98 | 86,565 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,612 |
| Random U.S. City to State | 0 | - | 4.45 | 75,434 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,536 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,004 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,877 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,767 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,626 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,209 |
| New England States | 0 | - | 4.51 | 59,715 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,522 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,897 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,375 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,684 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,688 |
| U.S. States by Borders | 0 | - | 4.63 | 35,104 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,264 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,167 |
| Most Valuable Crops by U.S. State | 0 | - | 4.40 | 38,943 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,015 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,120 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,489 |
| Canadian Islands on the Map | 0 | - | 4.39 | 19,921 |
| Most-Visited Countries by Canadians | 0 | - | 4.77 | 39,129 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,789 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,437 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,361 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,186 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,380 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,825 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,661 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,142 |
| Canada or Africa by Area | 0 | - | 4.77 | 18,098 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,102 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,152 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,140 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,316 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,381 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 31,955 |
| Cuba Country Quiz | 0 | - | 4.69 | 51,220 |
| Jamaica Country Quiz | 0 | - | 4.58 | 34,888 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,381 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,535 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,594 |
| Top U.S. Universities | 0 | - | 4.15 | 144,193 |
| Largest United States Airlines | 0 | - | 4.39 | 54,856 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,385 |
| Names of Generations | 0 | - | 4.01 | 22,305 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 105,094 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,804 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,899 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,155 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,634 |
| U.S. States by Governor | 0 | - | 4.43 | 17,991 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,588 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,562 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,768 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,509 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,687 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,464 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,302 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,047 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,610 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,431 |
| Musical Acts by State | 0 | - | 4.05 | 19,560 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,784 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,539 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,791 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,405 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,677 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,093 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,237 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,678,884 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,612 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,911 |
| O Canada Lyrics | 0 | - | 4.47 | 50,802 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 34,586 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,077 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,986 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,544 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,325 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,482 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 486,803 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 709,929 |
| MLB Baseball Last Names | 0 | - | 4.32 | 18,967 |
| Famous Child Stars by Last Name | 0 | - | 4.15 | 13,434 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 76,461 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 73,544 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,518 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,519 |
| U.S. Geography by Letter - T | 0 | - | 4.28 | 49,187 |
| U.S. Geography by Letter - P | 0 | - | 4.35 | 47,601 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 52,781 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 40,588 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 38,761 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,523 |
| Countries that Beat Brazil | 0 | - | 4.49 | 67,967 |
| U.S. Cities Chain | 0 | - | 4.21 | 35,187 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,801 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 34,376 |
| Cities by Picture #2 | 0 | - | 4.19 | 34,959 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 40,623 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,389 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,195 |
| American Founding Fathers | 0 | - | 4.41 | 23,083 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,175 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,209 |
| People on Money - United States | 0 | - | 4.31 | 63,220 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,753 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,636 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,469 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 52,819 |
| Flyover States | 0 | - | 4.52 | 29,410 |
| U.S. States With Double Letters | 0 | - | 4.54 | 23,948 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 75,854 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,215 |
