| Deadliest U.S. Wars | 0 | - | 4.89 | 191,634 |
| Battle to Country | 0 | - | 4.91 | 53,861 |
| US States Quiz | 0 | - | 5.00 | 16,973,409 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,750 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,362 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,166 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,875 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,089 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,356 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,060 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,173 |
| US States with an Empty Map | 0 | - | 5.00 | 627,899 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,883 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,006 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,186 |
| The American Civil War | 0 | - | 4.62 | 52,602 |
| Rivers of the United States | 0 | - | 4.93 | 66,583 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,109 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,987 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,504 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,322 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 50,008 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,708 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,569 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,358 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,365 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,387 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,062 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,553,370 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,182 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,388 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,780 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,855 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,844 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,133 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,854 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,721,109 |
| American Founding Fathers | 0 | - | 4.42 | 23,268 |
| People on Money - United States | 0 | - | 4.31 | 63,417 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,570 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,690 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,755 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,652 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,739 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,956 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,412 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.74 | 63,980 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,805 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,850 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,281 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 749,227 |
| Names of Generations | 0 | - | 4.09 | 45,435 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,319 |
| History of Florida | 0 | - | 4.45 | 9,868 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,512 |
| History of Texas | 0 | - | 4.43 | 14,680 |
| American History Quotes #1 | 0 | - | 4.37 | 96,176 |
| American History Quotes #2 | 0 | - | 4.38 | 41,490 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,324 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,397,393 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,691,014 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,443 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,172 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.46 | 119,295 |
| Canadian Prime Ministers | 0 | - | 4.64 | 57,844 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,593 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,937 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,921 |
| Countries in World War I | 0 | - | 4.88 | 228,963 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,989 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,529 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,351 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,867 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 18,099 |
| The Vietnam War | 0 | - | 4.44 | 35,632 |
| Countries that Have Won the Most Battles | 0 | - | 4.01 | 39,743 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,508 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,602 |
| Arms Exports - United States | 0 | - | 4.77 | 62,664 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,585 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,209 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,557 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,896 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 428,143 |
| State Quiz - Alaska | 0 | - | 4.42 | 42,239 |
| State Quiz - Arizona | 0 | - | 4.44 | 36,875 |
| California Cities Map Quiz | 0 | - | 4.50 | 88,147 |
| State Quiz - California | 0 | - | 4.69 | 64,726 |
| State Quiz - Florida | 0 | - | 4.47 | 62,553 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,982 |
| Countries that Visit Florida the Most | 0 | - | 4.70 | 72,664 |
| State Quiz - Georgia | 0 | - | 4.48 | 35,712 |
| Countries Closest to Hawaii | 0 | - | 4.55 | 53,910 |
| State Quiz - Illinois | 0 | - | 4.44 | 33,518 |
| State Quiz - Kentucky | 0 | - | 4.42 | 32,599 |
| State Quiz - Minnesota | 0 | - | 4.41 | 38,969 |
| New York Cities Map Quiz | 0 | - | 4.55 | 42,338 |
| State Quiz - New York | 0 | - | 4.52 | 46,361 |
| State Quiz - New Jersey | 0 | - | 4.42 | 38,313 |
| State Quiz - Texas | 0 | - | 4.43 | 63,128 |
| State Quiz - Pennsylvania | 0 | - | 4.50 | 49,266 |
| State Quiz - Tennessee | 0 | - | 4.54 | 34,336 |
| State Quiz - Virginia | 0 | - | 4.53 | 40,462 |
| State Quiz - Washington | 0 | - | 4.45 | 36,604 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,889 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.75 | 38,533 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 39,354 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,105 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.64 | 66,040 |
| U.S. States with More Cows than People | 0 | - | 4.74 | 47,853 |
| U.S. States with Spanish Names | 0 | - | 4.49 | 88,182 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,554 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,336 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 35,113 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,246 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,915 |
| Longest U.S. State Borders | 0 | - | 4.69 | 40,073 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,682 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 114,155 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,355 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,444 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,477 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,454 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 50,167 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 54,350 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,588 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,480 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,644 |
| U.S. Geography by Letter - R | 0 | - | 4.22 | 36,796 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,545 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,940 |
| American Political Words | 0 | - | 4.39 | 23,463 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,308 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,666 |
| California Groups of Things | 0 | - | 4.26 | 45,732 |
| History of California | 0 | - | 4.40 | 18,787 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,254 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,312 |
| History of Illinois | 0 | - | 4.24 | 11,249 |
| History of Maryland | 0 | - | 4.06 | 6,722 |
| History of Massachusetts | 0 | - | 4.14 | 8,422 |
| History of Michigan | 0 | - | 4.26 | 6,979 |
| New York Groups of Things | 0 | - | 4.39 | 71,808 |
| History of New York | 0 | - | 4.36 | 16,407 |
| History of New Jersey | 0 | - | 4.38 | 7,302 |
| History of Ohio | 0 | - | 4.14 | 7,373 |
| History of Tennessee | 0 | - | 4.29 | 7,684 |
| History of Washington State | 0 | - | 4.27 | 6,901 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 30,465 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,683 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,549 |
| U.S. States With Palm Trees | 0 | - | 4.52 | 45,908 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,130 |
| U.S. States by Emoji | 0 | - | 4.48 | 101,281 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,898 |
| U.S. State Shapes Quiz #1 | 0 | - | 4.74 | 153,317 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 102,264 |
| U.S. States that Start with N - Shape Quiz | 0 | - | 4.67 | 48,795 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,488 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,179 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,104 |
| The Iraq War | 0 | - | 4.47 | 15,698 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,809 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,684 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,857 |
| Topological Map of the USA Quiz | 0 | - | 4.49 | 29,246 |
| Name a Valid U.S. President #1 | 0 | - | 4.90 | 193,526 |
| Free in the Answers | 0 | - | 4.08 | 51,692 |
| Movies Set in Chicago | 0 | - | 4.46 | 28,225 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,868 |
| Michigan Cities Map Quiz | 0 | - | 4.45 | 21,145 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,072 |
| Movies Set in Las Vegas | 0 | - | 4.13 | 32,170 |
| Texas Cities Map Quiz | 0 | - | 4.38 | 81,634 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,207 |
| Washington Cities Map Quiz | 0 | - | 4.48 | 24,105 |
| Washington D.C. Landmarks on a Map | 0 | - | 4.60 | 18,478 |
| Regions of U.S. States | 0 | - | 4.37 | 44,131 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,412 |
| Top 10 U.S. States with the Longest Coastline | 0 | - | 4.45 | 50,914 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,413 |
| Movies by State | 0 | - | 4.27 | 40,598 |
| U.S. States with the Fewest Traffic Fatalities | 0 | - | 4.20 | 21,186 |
| U.S. States with the Most Traffic Fatalities | 0 | - | 4.10 | 19,200 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,665 |
| Monarchies of Europe | 0 | - | 4.90 | 98,729 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,173 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 84,972 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,599 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,712 |
| Monarchies of Asia | 0 | - | 4.97 | 71,434 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,224 |
| Countries in World War II | 0 | - | 4.53 | 917,734 |
| U.S States with the Most Cows | 0 | - | 4.63 | 29,939 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 93,107 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,728 |
| U.S. Geography by Letter - N | 0 | - | 3.80 | 53,037 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 49,045 |
| U.S. Geography by Letter - F | 0 | - | 3.84 | 45,313 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 41,776 |
