| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,202 |
| Pixelated United States Map | 0 | - | 4.89 | 93,507 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,605 |
| US States Quiz | 0 | - | 5.00 | 16,705,420 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,031 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,675 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,003 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,536 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,643 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,312 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,095 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,500 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,883 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,292 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,755 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,385 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,430 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,693 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,943 |
| U.S. States By Population | 0 | - | 4.92 | 152,394 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,426 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,881 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,577 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,769 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,901 |
| US States with an Empty Map | 0 | - | 5.00 | 618,968 |
| Flags of North and South America | 0 | - | 4.99 | 367,447 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,271 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,812 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,440 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,609 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,114 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,950 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,866 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,750 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,977 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,766 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,886 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,674 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,089 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,557 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,362 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,726 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,519 |
| States of Mexico | 0 | - | 4.95 | 173,393 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,824 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,478 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,079 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 34,357 |
| Cities by Picture #2 | 0 | - | 4.19 | 34,943 |
| United States Country Quiz | 0 | - | 4.43 | 100,616 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,609 |
| California Groups of Things | 0 | - | 4.25 | 45,277 |
| New York Groups of Things | 0 | - | 4.38 | 59,945 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,247 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,376 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,662 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,543 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,085 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,268 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 207,899 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,747 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,598 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,201 |
| New England States | 0 | - | 4.51 | 59,709 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,481 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,887 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,340 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,653 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,668 |
| U.S. States by Borders | 0 | - | 4.63 | 35,080 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,248 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,141 |
| Movies by State | 0 | - | 4.27 | 40,445 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 43,996 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,200 |
| U.S. States by Picture #1 | 0 | - | 4.21 | 15,364 |
| Washington State by Picture | 0 | - | 4.26 | 7,686 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,664 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,427 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,284 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,035 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 34,931 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,589 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,392 |
| Most Valuable Crops by U.S. State | 0 | - | 4.40 | 38,931 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,770 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,393 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,668 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,044 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,234 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,589 |
| Belize Country Quiz | 0 | - | 4.85 | 20,809 |
| Top U.S. Universities | 0 | - | 4.15 | 144,104 |
| Largest United States Airlines | 0 | - | 4.39 | 54,838 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,382 |
| U.S. States by Governor | 0 | - | 4.43 | 17,984 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,575 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,075 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,464 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,811 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,552 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,758 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,227,180 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,022 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,771 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 76,430 |
| U.S. Geography by Letter - C | 0 | - | 4.26 | 73,354 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,331 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,324 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 49,016 |
| U.S. Geography by Letter - P | 0 | - | 4.34 | 47,402 |
| U.S. Geography by Letter - M | 0 | - | 4.13 | 52,614 |
| U.S. Geography by Letter - L | 0 | - | 4.03 | 40,369 |
| U.S. Geography by Letter - G | 0 | - | 4.12 | 38,611 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,352 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,793 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.50 | 40,052 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,361 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,174 |
| American Founding Fathers | 0 | - | 4.41 | 23,074 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,145 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,206 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 55,697 |
| People on Money - United States | 0 | - | 4.31 | 63,207 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,735 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,612 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,464 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 52,295 |
| Flyover States | 0 | - | 4.52 | 29,400 |
| U.S. States With Double Letters | 0 | - | 4.54 | 23,926 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 75,823 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,199 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,981 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,419 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,495 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 48,707 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,280 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,484 |
| Musical Acts by State | 0 | - | 4.05 | 19,557 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 127,997 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,437 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,566 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,096 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,326 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,420 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,563 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,311 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,008 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,088 |
| Flags of Oceania | 0 | - | 5.00 | 255,303 |
| The Only American Country ... | 0 | - | 4.92 | 120,778 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,967 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,359 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,885 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,089 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,019 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,510 |
| Regions of U.S. States | 0 | - | 4.37 | 43,481 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,343 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,495 |
| U.S. States with the Lowest HDI | 0 | - | 4.46 | 28,764 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,199 |
| People by U.S. State - Multiple Choice | 0 | - | 4.06 | 9,801 |
| Canada Country Quiz | 0 | - | 4.54 | 131,742 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,628 |
| Canada A-Z | 0 | - | 4.73 | 32,653 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,905 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,845 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,392 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,436 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,115 |
| Name a Valid African Country | 0 | - | 4.98 | 152,966 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,104 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,615 |
| Mexico Country Quiz | 0 | - | 4.49 | 71,992 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,314 |
| Mexican Foods | 0 | - | 4.07 | 14,610 |
| South American Geography Quiz #2 | 0 | - | 4.62 | 39,201 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,475 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,006 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,398 |
| States of Brazil | 0 | - | 4.98 | 86,421 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,159 |
| U.S. States by Picture #2 | 0 | - | 3.47 | 11,513 |
| Random U.S. City to State | 0 | - | 4.45 | 75,337 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,415 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,774 |
| Senators Who Ran For President | 0 | - | 4.24 | 16,995 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 21,978 |
| Geography of California | 0 | - | 4.25 | 10,504 |
| California Pro Sport Teams | 0 | - | 4.19 | 22,650 |
| Chicago City Trivia | 0 | - | 4.31 | 31,379 |
| New York Pro Sport Teams | 0 | - | 4.32 | 25,802 |
| Texas Pro Sport Teams | 0 | - | 4.19 | 16,777 |
| History of Pennsylvania | 0 | - | 4.16 | 7,089 |
| History of Virginia | 0 | - | 4.31 | 11,556 |
| Events in U.S. History | 0 | - | 4.40 | 28,487 |
| Events by U.S. State #1 | 0 | - | 4.43 | 22,835 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,026 |
