| Deadliest U.S. Wars | 0 | - | 4.89 | 190,629 |
| Battle to Country | 0 | - | 4.91 | 53,224 |
| US States Quiz | 0 | - | 5.00 | 16,848,347 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,553 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,492 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,855 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,441 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,693 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,130 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,231 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,470 |
| US States with an Empty Map | 0 | - | 5.00 | 623,762 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,852 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,001 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,016 |
| The American Civil War | 0 | - | 4.62 | 52,393 |
| Rivers of the United States | 0 | - | 4.93 | 66,111 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,949 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,193 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,026 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,607 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,308 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,881 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,308 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,988 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,573 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,047 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,834 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,535,836 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,539 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,992 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,452 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 42,058 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,622 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,067 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,775 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,692,002 |
| American Founding Fathers | 0 | - | 4.42 | 23,211 |
| People on Money - United States | 0 | - | 4.31 | 63,328 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,429 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,460 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,011 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,493 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,611 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,708 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,276 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,719 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,683 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,353 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,827 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 746,590 |
| Names of Generations | 0 | - | 4.09 | 44,588 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,729 |
| History of Florida | 0 | - | 4.45 | 9,819 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,318 |
| History of Texas | 0 | - | 4.43 | 14,614 |
| American History Quotes #1 | 0 | - | 4.37 | 95,987 |
| American History Quotes #2 | 0 | - | 4.38 | 41,382 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,226 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,390,041 |
| US States by Borders in 30 Seconds | 0 | - | 4.67 | 2,678,305 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,325 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,088 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 119,051 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,459 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,281 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,732 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,809 |
| Countries in World War I | 0 | - | 4.88 | 227,948 |
| United States Map Quiz | 0 | - | 4.98 | 4,155,340 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,354 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,201 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,803 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 17,964 |
| The Vietnam War | 0 | - | 4.44 | 35,497 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,539 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,269 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,052 |
| Arms Exports - United States | 0 | - | 4.75 | 62,328 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,515 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,139 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,507 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,854 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,134 |
| State Quiz - Alaska | 0 | - | 4.42 | 42,012 |
| State Quiz - Arizona | 0 | - | 4.44 | 36,683 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,920 |
| State Quiz - California | 0 | - | 4.69 | 64,356 |
| State Quiz - Florida | 0 | - | 4.47 | 62,283 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,842 |
| Countries that Visit Florida the Most | 0 | - | 4.70 | 72,171 |
| State Quiz - Georgia | 0 | - | 4.48 | 35,533 |
| Countries Closest to Hawaii | 0 | - | 4.55 | 53,593 |
| State Quiz - Illinois | 0 | - | 4.44 | 33,357 |
| State Quiz - Kentucky | 0 | - | 4.41 | 32,431 |
| State Quiz - Minnesota | 0 | - | 4.41 | 38,771 |
| New York Cities Map Quiz | 0 | - | 4.55 | 42,209 |
| State Quiz - New York | 0 | - | 4.52 | 46,049 |
| State Quiz - New Jersey | 0 | - | 4.42 | 38,118 |
| State Quiz - Texas | 0 | - | 4.43 | 62,822 |
| State Quiz - Pennsylvania | 0 | - | 4.50 | 48,964 |
| State Quiz - Tennessee | 0 | - | 4.54 | 34,140 |
| State Quiz - Virginia | 0 | - | 4.53 | 40,274 |
| State Quiz - Washington | 0 | - | 4.45 | 36,389 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,777 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.74 | 38,443 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 39,039 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,876 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,742 |
| U.S. States with More Cows than People | 0 | - | 4.74 | 47,697 |
| U.S. States with Spanish Names | 0 | - | 4.50 | 87,794 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,486 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,940 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 35,031 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 48,984 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,765 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,753 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,577 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,457 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,293 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,031 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,029 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,026 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,719 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 53,584 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,292 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,079 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,250 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,063 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,682 |
| American Political Words | 0 | - | 4.39 | 23,404 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,269 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,394 |
| California Groups of Things | 0 | - | 4.25 | 45,447 |
| History of California | 0 | - | 4.40 | 18,747 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,218 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,253 |
| History of Illinois | 0 | - | 4.24 | 11,217 |
| History of Maryland | 0 | - | 4.06 | 6,689 |
| History of Massachusetts | 0 | - | 4.14 | 8,387 |
| History of Michigan | 0 | - | 4.26 | 6,940 |
| New York Groups of Things | 0 | - | 4.35 | 63,393 |
| History of New York | 0 | - | 4.36 | 16,344 |
| History of New Jersey | 0 | - | 4.38 | 7,254 |
| History of Ohio | 0 | - | 4.14 | 7,338 |
| History of Tennessee | 0 | - | 4.29 | 7,657 |
| History of Washington State | 0 | - | 4.27 | 6,874 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 29,997 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,597 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,332 |
| U.S. States With Palm Trees | 0 | - | 4.52 | 45,768 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,068 |
| U.S. States by Emoji | 0 | - | 4.48 | 100,793 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,598 |
| U.S. State Shapes Quiz #1 | 0 | - | 4.74 | 152,845 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 102,029 |
| U.S. States that Start with N - Shape Quiz | 0 | - | 4.67 | 48,618 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,334 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,926 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,925 |
| The Iraq War | 0 | - | 4.47 | 15,642 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,409 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,279 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,382 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,521 |
| Free in the Answers | 0 | - | 4.08 | 51,486 |
| Movies Set in Chicago | 0 | - | 4.46 | 28,188 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,851 |
| Michigan Cities Map Quiz | 0 | - | 4.45 | 21,073 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,049 |
| Movies Set in Las Vegas | 0 | - | 4.13 | 32,130 |
| Texas Cities Map Quiz | 0 | - | 4.38 | 81,473 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,861 |
| Washington Cities Map Quiz | 0 | - | 4.48 | 24,063 |
| Washington D.C. Landmarks on a Map | 0 | - | 4.60 | 18,369 |
| Regions of U.S. States | 0 | - | 4.37 | 43,823 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,376 |
| Top 10 U.S. States with the Longest Coastline | 0 | - | 4.45 | 50,817 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,776 |
| Movies by State | 0 | - | 4.27 | 40,531 |
| U.S. States with the Fewest Traffic Fatalities | 0 | - | 4.20 | 21,131 |
| U.S. States with the Most Traffic Fatalities | 0 | - | 4.10 | 19,123 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,004 |
| Monarchies of Europe | 0 | - | 4.90 | 98,020 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,013 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 79,718 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,816 |
| Monarchies of Asia | 0 | - | 4.97 | 71,022 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,810 |
| Countries in World War II | 0 | - | 4.54 | 911,558 |
| U.S States with the Most Cows | 0 | - | 4.63 | 29,766 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,708 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,185 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,197 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,472 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,209 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,696 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,047 |
| U.S. Geography by Letter - N | 0 | - | 3.80 | 52,722 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 48,736 |
