| US States Quiz | 0 | - | 5.00 | 16,915,103 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,100 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,857 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,815 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,785 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,934 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,383 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,780 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 333,045 |
| Pixelated United States Map | 0 | - | 4.88 | 94,443 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,927 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,980 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,055 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,119 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,692 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,657 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,319 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,618 |
| U.S. States By Population | 0 | - | 4.92 | 153,728 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,691 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,588 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,492 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,327 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,786 |
| US States with an Empty Map | 0 | - | 5.00 | 625,912 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,232 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,672 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,801 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,829 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,928 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,601 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,356 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,484 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,431 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,275 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,913 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,322 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,990 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,551 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,974 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,731 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,991 |
| States of Mexico | 0 | - | 4.96 | 176,726 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,028 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,906 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,187 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,220 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,187 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,884 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 54,024 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,396 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,236 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,402 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,273 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,656 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,587 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,613 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,214 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,956 |
| United States Country Quiz | 0 | - | 4.43 | 101,704 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,945 |
| People on Money - United States | 0 | - | 4.31 | 63,372 |
| Canada A-Z | 0 | - | 4.73 | 32,887 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,445 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,588 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,054 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 209,801 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,238 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,032 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 59,954 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,390 |
| New England States | 0 | - | 4.51 | 59,834 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,887 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,036 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 82,908 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,108 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,999 |
| U.S. States by Borders | 0 | - | 4.61 | 35,372 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,540 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,142 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,268 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,472 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,830 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,352 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 52,986 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,888 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,531 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,240 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 35,072 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,843 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,919 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,908 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,525 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,792 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 113,977 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,323 |
| Flags of North and South America | 0 | - | 4.99 | 374,223 |
| U.S. Geography by Letter - N | 0 | - | 3.80 | 52,820 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 48,851 |
| U.S. Geography by Letter - F | 0 | - | 3.84 | 45,113 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 41,573 |
| U.S. Geography by Letter - R | 0 | - | 4.18 | 32,826 |
| Belize Country Quiz | 0 | - | 4.85 | 21,012 |
| Top U.S. Universities | 0 | - | 4.15 | 145,362 |
| Largest United States Airlines | 0 | - | 4.39 | 55,072 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,804 |
| U.S. States by Governor | 0 | - | 4.43 | 18,078 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,716 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,708 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,864 |
| Events in U.S. History | 0 | - | 4.41 | 28,707 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,531 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,865 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,611 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,180 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,285 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,021 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,723 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,398 |
| American Founding Fathers | 0 | - | 4.42 | 23,238 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,528 |
| California Groups of Things | 0 | - | 4.25 | 45,525 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,292 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,020 |
| New York Groups of Things | 0 | - | 4.35 | 63,921 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,504 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,115 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,916 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,538 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,524 |
| Flyover States | 0 | - | 4.52 | 29,536 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,165 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,252 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,381 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,132 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,513 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,144 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,098 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,575 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,669 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,479 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,845 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 119,169 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,345 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,565 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,853 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,739 |
| The Only American Country ... | 0 | - | 4.92 | 121,804 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,263 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,600 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,601 |
| Names of Generations | 0 | - | 4.09 | 45,176 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,377 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,062 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,025 |
| Regions of U.S. States | 0 | - | 4.37 | 43,974 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,399 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,597 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,872 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,319 |
| Movies by State | 0 | - | 4.27 | 40,563 |
| Canada Country Quiz | 0 | - | 4.54 | 132,655 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,345 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 85,840 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,278 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,684 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,369 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,951 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,520 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,162 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,235 |
| States of Brazil | 0 | - | 4.97 | 88,558 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,517 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,208 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,465 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,186 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,002 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,056 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,051 |
| Geography of California | 0 | - | 4.26 | 10,587 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,697 |
| Chicago City Trivia | 0 | - | 4.31 | 31,473 |
| New York Pro Sport Teams | 0 | - | 4.32 | 25,920 |
| Texas Pro Sport Teams | 0 | - | 4.19 | 16,831 |
| History of Pennsylvania | 0 | - | 4.16 | 7,146 |
| History of Virginia | 0 | - | 4.31 | 11,614 |
| Washington State by Picture | 0 | - | 4.26 | 7,738 |
| Events by U.S. State #1 | 0 | - | 4.43 | 22,928 |
| Most Valuable Crops by U.S. State | 0 | - | 4.40 | 39,134 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,270 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,835 |
| U.S. States with the Most Venomous Snake Species | 0 | - | 4.47 | 26,445 |
| U.S. States with the Most Endangered Species | 0 | - | 4.50 | 14,376 |
| African-American Historical Figures | 0 | - | 4.18 | 17,237 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,635 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,234 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 18,032 |
| Canada or Africa by Area | 0 | - | 4.78 | 18,412 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,469 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,412 |
