| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,418 |
| Pixelated United States Map | 0 | - | 4.88 | 94,740 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,501 |
| US States Quiz | 0 | - | 5.00 | 16,978,134 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,411 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,273 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,101 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,066 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,663 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,457 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,973 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,419 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,354 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,663 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,948 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,165 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,185 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,229 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,229 |
| U.S. States By Population | 0 | - | 4.92 | 154,070 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,126 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,829 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,795 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,499 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,029 |
| US States with an Empty Map | 0 | - | 5.00 | 628,044 |
| Flags of North and South America | 0 | - | 4.99 | 376,370 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,705 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,358 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,084 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,193 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,373 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,971 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,921 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,921 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,047 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,371 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,769 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,384 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,737 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,173 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,588 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,384 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,944 |
| States of Mexico | 0 | - | 4.96 | 177,950 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,518 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,107 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,788 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,661 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,266 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,708 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,278 |
| United States Country Quiz | 0 | - | 4.43 | 102,110 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 77,039 |
| California Groups of Things | 0 | - | 4.26 | 45,739 |
| New York Groups of Things | 0 | - | 4.39 | 71,882 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,574 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,582 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,002 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,175 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,862 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,287 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 749,325 |
| Names of Generations | 0 | - | 4.09 | 45,456 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 210,367 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,116 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 60,088 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,520 |
| New England States | 0 | - | 4.51 | 59,887 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,025 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,105 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,091 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,255 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,115 |
| U.S. States by Borders | 0 | - | 4.62 | 35,455 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,667 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,304 |
| Movies by State | 0 | - | 4.27 | 40,601 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,425 |
| United States Map Quiz | 0 | - | 4.98 | 4,169,513 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,504 |
| Washington State by Picture | 0 | - | 4.26 | 7,753 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,110 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.64 | 66,047 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,606 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,318 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 35,115 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,919 |
| Longest U.S. State Borders | 0 | - | 4.69 | 40,086 |
| Most Valuable Crops by U.S. State | 0 | - | 4.40 | 39,200 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,970 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,564 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,832 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 114,174 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,358 |
| Belize Country Quiz | 0 | - | 4.85 | 21,071 |
| Top U.S. Universities | 0 | - | 4.15 | 145,720 |
| Largest United States Airlines | 0 | - | 4.39 | 55,138 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,947 |
| U.S. States by Governor | 0 | - | 4.43 | 18,109 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,756 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,210 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,558 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,897 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,761 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,901 |
| Events in U.S. History | 0 | - | 4.41 | 28,798 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,255,750 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,559 |
| Flags of Asia Quiz | 0 | - | 4.99 | 619,117 |
| Flags of Africa Quiz | 0 | - | 5.00 | 476,591 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,456 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,488 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,466 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 50,173 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 54,362 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,593 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,491 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,649 |
| U.S. Geography by Letter - R | 0 | - | 4.22 | 36,811 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,558 |
| American Legal Vocabulary | 0 | - | 4.40 | 34,004 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,916 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,853 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,457 |
| American Founding Fathers | 0 | - | 4.42 | 23,269 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,680 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,313 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,212 |
| People on Money - United States | 0 | - | 4.31 | 63,423 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,194 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 75,037 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,560 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,765 |
| Flyover States | 0 | - | 4.52 | 29,583 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,240 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,371 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,447 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,176 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,556 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,352 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,261 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,659 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,744 |
| Musical Acts by State | 0 | - | 4.05 | 19,609 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,931 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,964 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.46 | 119,305 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,418 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,659 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.74 | 64,001 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,808 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,564 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,996 |
| Flags of Oceania | 0 | - | 5.00 | 262,231 |
| The Only American Country ... | 0 | - | 4.92 | 122,139 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,827 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,711 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,873 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,903 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,072 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,215 |
| Regions of U.S. States | 0 | - | 4.37 | 44,144 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,416 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,626 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,925 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,356 |
| People by U.S. State - Multiple Choice | 0 | - | 4.06 | 9,850 |
| Canada Country Quiz | 0 | - | 4.55 | 132,968 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,554 |
| Canada A-Z | 0 | - | 4.73 | 32,950 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,405 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,373 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 136,009 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,695 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,537 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,376 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,753 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,845 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,697 |
| South American Geography Quiz #2 | 0 | - | 4.41 | 43,771 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,857 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,684 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,508 |
| States of Brazil | 0 | - | 4.97 | 89,451 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,229 |
| U.S. States by Picture #2 | 0 | - | 3.47 | 11,590 |
| Random U.S. City to State | 0 | - | 4.45 | 76,817 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,780 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,481 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,077 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,081 |
| Geography of California | 0 | - | 4.26 | 10,616 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,711 |
| Chicago City Trivia | 0 | - | 4.31 | 31,512 |
| New York Pro Sport Teams | 0 | - | 4.32 | 25,954 |
| Texas Pro Sport Teams | 0 | - | 4.19 | 16,852 |
| History of Pennsylvania | 0 | - | 4.16 | 7,162 |
| History of Virginia | 0 | - | 4.33 | 11,640 |
| Events by U.S. State #1 | 0 | - | 4.43 | 22,959 |
