| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,788 |
| Pixelated United States Map | 0 | - | 4.89 | 94,889 |
| US States Quiz | 0 | - | 5.00 | 17,013,005 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,558 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,506 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,673 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,839 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,135 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,813 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 335,995 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,666 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,534 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,917 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,143 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,376 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,415 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,457 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,495 |
| U.S. States By Population | 0 | - | 4.92 | 154,216 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,325 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,946 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,935 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,576 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,169 |
| US States with an Empty Map | 0 | - | 5.00 | 629,282 |
| Flags of North and South America | 0 | - | 4.99 | 377,678 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,423 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,337 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,810 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,413 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,552 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,079 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,322 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,522 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,728 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,950 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,608 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,948 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,243 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,142 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,550 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,308 |
| States of Mexico | 0 | - | 4.96 | 178,550 |
| Mexico States Map Quiz | 0 | - | 4.85 | 105,745 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,911 |
| Washington State by Picture | 0 | - | 4.26 | 7,763 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,195 |
| Georgia ... or Georgia? | 0 | - | 4.68 | 77,080 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,849 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,783 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,685 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,291 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,750 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,321 |
| United States Country Quiz | 0 | - | 4.43 | 102,302 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,091 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,737 |
| California Groups of Things | 0 | - | 4.26 | 45,797 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,324 |
| New York Groups of Things | 0 | - | 4.39 | 72,302 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,650 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,586 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,240 |
| U.S. Geography by Letter - B | 0 | - | 4.54 | 70,119 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 58,419 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 750,150 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,660 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,168 |
| New England States | 0 | - | 4.51 | 59,906 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,096 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,132 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,194 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,320 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,174 |
| U.S. States by Borders | 0 | - | 4.61 | 35,506 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,705 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,380 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,470 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,989 |
| United States Map Quiz | 0 | - | 4.98 | 4,172,846 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,521 |
| Countries Closest to Alaska | 0 | - | 4.93 | 125,235 |
| Geography of California | 0 | - | 4.26 | 10,638 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,718 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,666 |
| New York Pro Sport Teams | 0 | - | 4.32 | 25,968 |
| Texas Pro Sport Teams | 0 | - | 4.19 | 16,861 |
| History of Pennsylvania | 0 | - | 4.16 | 7,171 |
| History of Virginia | 0 | - | 4.33 | 11,645 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,173 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.64 | 66,147 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,674 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.70 | 61,413 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.75 | 35,125 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,971 |
| Longest U.S. State Borders | 0 | - | 4.69 | 40,179 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,992 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,581 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,847 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 114,530 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,380 |
| Belize Country Quiz | 0 | - | 4.85 | 21,110 |
| Top U.S. Universities | 0 | - | 4.15 | 145,930 |
| Largest United States Airlines | 0 | - | 4.39 | 55,178 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,024 |
| U.S. States by Governor | 0 | - | 4.43 | 18,119 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,778 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,220 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,569 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,909 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,791 |
| Famous People from Alabama by Picture | 0 | - | 4.07 | 24,141 |
| Los Angeles vs. New York | 0 | - | 4.41 | 20,055 |
| Famous People from Illinois by Picture | 0 | - | 4.03 | 20,238 |
| Famous People from Indiana by Picture | 0 | - | 4.36 | 25,195 |
| Famous People from Maryland by Picture | 0 | - | 4.23 | 16,933 |
| Famous People from Massachusetts by Picture | 0 | - | 4.29 | 24,672 |
| Famous People from Michigan by Picture | 0 | - | 4.30 | 21,512 |
| Famous People from New York by Picture | 0 | - | 4.03 | 27,633 |
| Famous Missourians | 0 | - | 4.12 | 6,439 |
| Famous People from New Jersey by Picture | 0 | - | 4.25 | 22,367 |
| Famous People from Texas by Picture | 0 | - | 4.00 | 33,475 |
| Famous People from Ohio by Picture | 0 | - | 4.03 | 17,753 |
| Famous People from Pennsylvania by Picture | 0 | - | 4.24 | 25,541 |
| Movies Set in Pennsylvania | 0 | - | 4.19 | 11,582 |
| Famous People from Tennessee by Picture | 0 | - | 4.33 | 27,491 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,558 |
| Famous People from Virginia by Picture | 0 | - | 4.18 | 24,290 |
| Famous People from Wisconsin | 0 | - | 4.03 | 6,867 |
| Events in U.S. History | 0 | - | 4.41 | 28,848 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,260,224 |
| Flags of Asia Quiz | 0 | - | 4.99 | 621,405 |
| Flags of Africa Quiz | 0 | - | 5.00 | 478,592 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,666 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,714 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,666 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 50,441 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 54,588 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,763 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,700 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,845 |
| U.S. Geography by Letter - R | 0 | - | 4.22 | 37,054 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,780 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,034 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 53,079 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,906 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,488 |
| American Founding Fathers | 0 | - | 4.42 | 23,278 |
| Musical Acts from Los Angeles by Two Songs | 0 | - | 4.27 | 16,346 |
| Movies Set in San Francisco | 0 | - | 4.23 | 19,962 |
| Movies Set in Miami | 0 | - | 4.32 | 16,718 |
| Movies and TV Shows Set in Boston | 0 | - | 4.17 | 9,800 |
| Famous People from Minnesota by Picture | 0 | - | 3.74 | 20,503 |
| State Quiz - Minnesota | 0 | - | 4.41 | 39,062 |
| New York City Geography | 0 | - | 4.43 | 33,195 |
| People on Money - United States | 0 | - | 4.31 | 63,443 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,600 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,248 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 75,079 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,576 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,885 |
| Flyover States | 0 | - | 4.53 | 29,608 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,285 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,444 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,475 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,199 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,572 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,439 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,328 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,701 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,774 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 129,020 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 65,037 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.46 | 119,368 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,468 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,700 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.74 | 64,076 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,836 |
| Flags of Oceania | 0 | - | 5.00 | 263,199 |
| The Only American Country ... | 0 | - | 4.92 | 122,304 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,737 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,936 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,917 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 76,029 |
| Names of Generations | 0 | - | 4.09 | 45,571 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,137 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,078 |
| Regions of U.S. States | 0 | - | 4.37 | 44,228 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,429 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,638 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,940 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,379 |
| Movies by State | 0 | - | 4.27 | 40,615 |
| Canada Country Quiz | 0 | - | 4.55 | 133,124 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,654 |
| Canada A-Z | 0 | - | 4.73 | 32,984 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,742 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,569 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,847 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,546 |
