| Deadliest U.S. Wars | 0 | - | 4.89 | 189,246 |
| Battle to Country | 0 | - | 4.91 | 52,516 |
| US States Quiz | 0 | - | 5.00 | 16,699,786 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,862 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,656 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,549 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,948 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,804 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,413 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,578 |
| US States with an Empty Map | 0 | - | 5.00 | 618,801 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,707 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,931 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,729 |
| The American Civil War | 0 | - | 4.62 | 52,156 |
| Rivers of the United States | 0 | - | 4.93 | 65,510 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,734 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,312 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,442 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,697 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,573 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,060 |
| Six Flags Over Texas | 0 | - | 4.79 | 63,009 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,479 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,439 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,650 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,526 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,518,474 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,533 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,498 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 39,642 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,342 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,880 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,669 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,654,076 |
| American Founding Fathers | 0 | - | 4.41 | 23,074 |
| People on Money - United States | 0 | - | 4.31 | 63,205 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,240 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,186 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 51,954 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,270 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,478 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,425 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,086 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,403 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,562 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,533 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,076 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,189 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,073 |
| History of Florida | 0 | - | 4.45 | 9,764 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,196 |
| History of Texas | 0 | - | 4.43 | 14,554 |
| American History Quotes #1 | 0 | - | 4.37 | 95,687 |
| American History Quotes #2 | 0 | - | 4.38 | 41,223 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,076 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,380,236 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,664,560 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,192 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,979 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,557 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,037 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,944 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,507 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,399 |
| Countries in World War I | 0 | - | 4.88 | 226,598 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,747 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,180 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,018 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,731 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 17,816 |
| The Vietnam War | 0 | - | 4.43 | 35,294 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,362 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,974 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,409 |
| Arms Exports - United States | 0 | - | 4.70 | 54,346 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,375 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,073 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,461 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,807 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,709 |
| State Quiz - Alaska | 0 | - | 4.42 | 41,791 |
| State Quiz - Arizona | 0 | - | 4.44 | 36,491 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,638 |
| State Quiz - California | 0 | - | 4.68 | 63,961 |
| State Quiz - Florida | 0 | - | 4.47 | 61,937 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,630 |
| Countries that Visit Florida the Most | 0 | - | 4.72 | 71,116 |
| State Quiz - Georgia | 0 | - | 4.48 | 35,324 |
| Countries Closest to Hawaii | 0 | - | 4.54 | 53,241 |
| State Quiz - Illinois | 0 | - | 4.44 | 33,154 |
| State Quiz - Kentucky | 0 | - | 4.41 | 32,247 |
| State Quiz - Minnesota | 0 | - | 4.41 | 38,554 |
| New York Cities Map Quiz | 0 | - | 4.54 | 42,045 |
| State Quiz - New York | 0 | - | 4.52 | 45,737 |
| State Quiz - New Jersey | 0 | - | 4.42 | 37,890 |
| State Quiz - Texas | 0 | - | 4.43 | 62,508 |
| State Quiz - Pennsylvania | 0 | - | 4.50 | 48,627 |
| State Quiz - Tennessee | 0 | - | 4.54 | 33,901 |
| State Quiz - Virginia | 0 | - | 4.52 | 40,033 |
| State Quiz - Washington | 0 | - | 4.45 | 36,164 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,665 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.74 | 38,317 |
| U.S. States by Clue #1 | 0 | - | 4.53 | 38,608 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,662 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,405 |
| U.S. States with More Cows than People | 0 | - | 4.63 | 40,435 |
| U.S. States with Spanish Names | 0 | - | 4.50 | 87,296 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,415 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,482 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 34,927 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 48,692 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,578 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,384 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,449 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,032 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,226 |
| U.S. Geography by Letter - C | 0 | - | 4.26 | 73,344 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,316 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,313 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 49,000 |
| U.S. Geography by Letter - P | 0 | - | 4.34 | 47,387 |
| U.S. Geography by Letter - M | 0 | - | 4.13 | 52,601 |
| U.S. Geography by Letter - L | 0 | - | 4.03 | 40,359 |
| U.S. Geography by Letter - G | 0 | - | 4.12 | 38,605 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,337 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,375 |
| American Political Words | 0 | - | 4.39 | 23,340 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,538 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,133 |
| California Groups of Things | 0 | - | 4.25 | 45,266 |
| History of California | 0 | - | 4.40 | 18,695 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,179 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,204 |
| History of Illinois | 0 | - | 4.24 | 11,176 |
| History of Maryland | 0 | - | 4.06 | 6,648 |
| History of Massachusetts | 0 | - | 4.14 | 8,328 |
| History of Michigan | 0 | - | 4.26 | 6,902 |
| New York Groups of Things | 0 | - | 4.38 | 59,940 |
| History of New York | 0 | - | 4.36 | 16,282 |
| History of New Jersey | 0 | - | 4.38 | 7,205 |
| History of Ohio | 0 | - | 4.14 | 7,307 |
| History of Tennessee | 0 | - | 4.29 | 7,632 |
| History of Washington State | 0 | - | 4.27 | 6,839 |
| U.S. History A-Z #1 | 0 | - | 4.39 | 29,336 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,498 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,088 |
| U.S. States With Palm Trees | 0 | - | 4.52 | 45,603 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 40,974 |
| U.S. States by Emoji | 0 | - | 4.48 | 100,143 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,262 |
| U.S. State Shapes Quiz #1 | 0 | - | 4.74 | 152,365 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 101,764 |
| U.S. States that Start with N - Shape Quiz | 0 | - | 4.67 | 48,444 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,132 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,409 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,676 |
| The Iraq War | 0 | - | 4.47 | 15,552 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,952 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,322 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,863 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,837 |
| Free in the Answers | 0 | - | 4.11 | 51,280 |
| Movies Set in Chicago | 0 | - | 4.46 | 28,145 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,061 |
| Michigan Cities Map Quiz | 0 | - | 4.45 | 20,904 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,019 |
| Movies Set in Las Vegas | 0 | - | 4.13 | 32,085 |
| Texas Cities Map Quiz | 0 | - | 4.38 | 81,301 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,491 |
| Washington Cities Map Quiz | 0 | - | 4.48 | 24,016 |
| Washington D.C. Landmarks on a Map | 0 | - | 4.61 | 18,282 |
| Regions of U.S. States | 0 | - | 4.37 | 43,466 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,341 |
| Top 10 U.S. States with the Longest Coastline | 0 | - | 4.45 | 50,684 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,249 |
| Movies by State | 0 | - | 4.27 | 40,443 |
| U.S. States with the Fewest Traffic Fatalities | 0 | - | 4.20 | 21,056 |
| U.S. States with the Most Traffic Fatalities | 0 | - | 4.10 | 19,044 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,213 |
| Monarchies of Europe | 0 | - | 4.90 | 97,305 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,941 |
| Monarchies of Asia | 0 | - | 4.97 | 70,596 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,431 |
| Countries in World War II | 0 | - | 4.53 | 904,468 |
| U.S States with the Most Cows | 0 | - | 4.63 | 29,543 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,887 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,673 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,172 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,361 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,094 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,094 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,082 |
| U.S. Geography by Letter - N | 0 | - | 3.79 | 52,158 |
| U.S. Geography by Letter - E | 0 | - | 3.73 | 48,195 |
| U.S. Geography by Letter - F | 0 | - | 3.86 | 44,447 |
| U.S. Geography by Letter - O | 0 | - | 3.43 | 33,794 |
| U.S. Geography by Letter - R | 0 | - | 4.15 | 30,269 |
| Mexico Country Quiz | 0 | - | 4.49 | 71,974 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,314 |
