| US States Quiz | 0 | - | 5.00 | 16,896,593 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,757 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,783 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,948 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 332,622 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,088 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,403 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,120 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,863 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,207 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,568 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,725 |
| US States with an Empty Map | 0 | - | 5.00 | 625,317 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,223 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,351 |
| American Founding Fathers | 0 | - | 4.42 | 23,233 |
| The American Civil War | 0 | - | 4.62 | 52,458 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,338 |
| Rivers of the United States | 0 | - | 4.93 | 66,261 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,007 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,094 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,822 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,456 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,189 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,215 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,575 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,211 |
| History of Florida | 0 | - | 4.45 | 9,832 |
| History of Texas | 0 | - | 4.43 | 14,642 |
| American History Quotes #1 | 0 | - | 4.37 | 96,066 |
| American History Quotes #2 | 0 | - | 4.38 | 41,426 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,263 |
| U.S. States that Border Canada | 0 | - | 4.91 | 185,242 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,181 |
| Battle to Country | 0 | - | 4.91 | 53,437 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,909 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,542,237 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,043 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,403 |
| The Vietnam War | 0 | - | 4.44 | 35,557 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,609 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 51,418 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,693 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,703,739 |
| People on Money - United States | 0 | - | 4.31 | 63,355 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,486 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,552 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,435 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,556 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,657 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,804 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,330 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,808 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,720 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,469 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,906 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,543 |
| Names of Generations | 0 | - | 4.09 | 45,065 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,902 |
| History of California | 0 | - | 4.40 | 18,763 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,231 |
| History of Illinois | 0 | - | 4.24 | 11,227 |
| History of Maryland | 0 | - | 4.06 | 6,696 |
| History of Massachusetts | 0 | - | 4.14 | 8,397 |
| History of Michigan | 0 | - | 4.26 | 6,949 |
| History of New York | 0 | - | 4.36 | 16,366 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,370 |
| History of New Jersey | 0 | - | 4.38 | 7,270 |
| History of Ohio | 0 | - | 4.14 | 7,352 |
| History of Tennessee | 0 | - | 4.29 | 7,667 |
| History of Washington State | 0 | - | 4.27 | 6,882 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 30,133 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,626 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,392,781 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,683,571 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,364 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,118 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 119,139 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,583 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,807 |
| The Iraq War | 0 | - | 4.47 | 15,663 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,205 |
| Countries in World War I | 0 | - | 4.88 | 228,320 |
| United States Map Quiz | 0 | - | 4.98 | 4,161,442 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,416 |
| A Superlative for Every U.S. State | 0 | - | 4.44 | 28,105 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,258 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,830 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 18,013 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,374 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,249 |
| Arms Exports - United States | 0 | - | 4.77 | 62,468 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,548 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,173 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,532 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,870 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,784 |
| State Quiz - Alaska | 0 | - | 4.42 | 42,106 |
| State Quiz - Arizona | 0 | - | 4.44 | 36,754 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,995 |
| State Quiz - California | 0 | - | 4.69 | 64,494 |
| State Quiz - Florida | 0 | - | 4.47 | 62,392 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,914 |
| Countries that Visit Florida the Most | 0 | - | 4.70 | 72,356 |
| State Quiz - Georgia | 0 | - | 4.48 | 35,607 |
| Countries Closest to Hawaii | 0 | - | 4.55 | 53,703 |
| State Quiz - Illinois | 0 | - | 4.44 | 33,408 |
| State Quiz - Kentucky | 0 | - | 4.42 | 32,505 |
| State Quiz - Minnesota | 0 | - | 4.41 | 38,845 |
| New York Cities Map Quiz | 0 | - | 4.55 | 42,255 |
| State Quiz - New York | 0 | - | 4.52 | 46,170 |
| State Quiz - New Jersey | 0 | - | 4.42 | 38,196 |
| State Quiz - Texas | 0 | - | 4.43 | 62,923 |
| State Quiz - Pennsylvania | 0 | - | 4.50 | 49,067 |
| State Quiz - Tennessee | 0 | - | 4.54 | 34,212 |
| State Quiz - Virginia | 0 | - | 4.53 | 40,338 |
| State Quiz - Washington | 0 | - | 4.45 | 36,467 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,814 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.74 | 38,474 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 39,156 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 52,966 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,842 |
| U.S. States with More Cows than People | 0 | - | 4.74 | 47,784 |
| U.S. States with Spanish Names | 0 | - | 4.50 | 87,936 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,509 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,087 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 35,055 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,063 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,823 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,874 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,624 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 113,931 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,317 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,124 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,138 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,131 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,826 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 53,951 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,357 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,184 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,346 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,200 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,771 |
| American Political Words | 0 | - | 4.39 | 23,435 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,075 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,490 |
| California Groups of Things | 0 | - | 4.25 | 45,502 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,283 |
| New York Groups of Things | 0 | - | 4.35 | 63,827 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,285 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,427 |
| U.S. States With Palm Trees | 0 | - | 4.52 | 45,816 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,094 |
| U.S. States by Emoji | 0 | - | 4.48 | 101,006 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,706 |
| U.S. State Shapes Quiz #1 | 0 | - | 4.74 | 153,124 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 102,139 |
| U.S. States that Start with N - Shape Quiz | 0 | - | 4.67 | 48,682 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,389 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,432 |
| The Persian Gulf War | 0 | - | 4.02 | 8,457 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,544 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,607 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,546 |
| Topological Map of the USA Quiz | 0 | - | 4.49 | 29,136 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,062 |
| Free in the Answers | 0 | - | 4.08 | 51,581 |
| Movies Set in Chicago | 0 | - | 4.46 | 28,200 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,227 |
| Michigan Cities Map Quiz | 0 | - | 4.45 | 21,101 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,057 |
| Movies Set in Las Vegas | 0 | - | 4.13 | 32,141 |
| Texas Cities Map Quiz | 0 | - | 4.38 | 81,541 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,996 |
| Washington Cities Map Quiz | 0 | - | 4.48 | 24,073 |
| Washington D.C. Landmarks on a Map | 0 | - | 4.60 | 18,411 |
| Regions of U.S. States | 0 | - | 4.37 | 43,930 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,394 |
| Top 10 U.S. States with the Longest Coastline | 0 | - | 4.45 | 50,847 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,283 |
| Movies by State | 0 | - | 4.27 | 40,557 |
| U.S. States with the Fewest Traffic Fatalities | 0 | - | 4.20 | 21,154 |
| U.S. States with the Most Traffic Fatalities | 0 | - | 4.10 | 19,147 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,242 |
| Monarchies of Europe | 0 | - | 4.90 | 98,241 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,573 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 82,752 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,874 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,177 |
| Monarchies of Asia | 0 | - | 4.97 | 71,149 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,955 |
| Countries in World War II | 0 | - | 4.54 | 913,777 |
| U.S States with the Most Cows | 0 | - | 4.63 | 29,840 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,976 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,342 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,353 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,706 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,467 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,222 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,282 |
