| Deadliest U.S. Wars | 0 | - | 4.89 | 191,075 |
| US States Quiz | 0 | - | 5.00 | 16,918,560 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,312 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,944 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 62,003 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 333,131 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,448 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,196 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,920 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,237 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,694 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,847 |
| US States with an Empty Map | 0 | - | 5.00 | 626,021 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,381 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,515 |
| American Founding Fathers | 0 | - | 4.42 | 23,238 |
| Rivers of the United States | 0 | - | 4.93 | 66,338 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,036 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,107 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,830 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,583 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,249 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,476 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,669 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,343 |
| History of Florida | 0 | - | 4.45 | 9,843 |
| History of Texas | 0 | - | 4.43 | 14,654 |
| American History Quotes #1 | 0 | - | 4.37 | 96,103 |
| American History Quotes #2 | 0 | - | 4.38 | 41,443 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,277 |
| U.S. States that Border Canada | 0 | - | 4.91 | 185,575 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,236 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,938 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,544,552 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,332 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,621 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,669 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,340 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,107 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,731 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,708,486 |
| People on Money - United States | 0 | - | 4.31 | 63,375 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,504 |
| The American Civil War | 0 | - | 4.62 | 52,501 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,594 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,539 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,575 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,672 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,858 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,352 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,862 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,745 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,625 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,045 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 748,049 |
| Names of Generations | 0 | - | 4.09 | 45,195 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,986 |
| History of California | 0 | - | 4.40 | 18,768 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,240 |
| History of Illinois | 0 | - | 4.24 | 11,234 |
| History of Maryland | 0 | - | 4.06 | 6,701 |
| History of Massachusetts | 0 | - | 4.14 | 8,403 |
| History of Michigan | 0 | - | 4.26 | 6,958 |
| History of New York | 0 | - | 4.36 | 16,378 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,397 |
| History of New Jersey | 0 | - | 4.38 | 7,277 |
| History of Ohio | 0 | - | 4.14 | 7,360 |
| History of Tennessee | 0 | - | 4.29 | 7,674 |
| History of Washington State | 0 | - | 4.27 | 6,888 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 30,192 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,644 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,393,849 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,685,375 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,384 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,136 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 119,173 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,645 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,839 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,615 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,456 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,275 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,835 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 18,038 |
| The Vietnam War | 0 | - | 4.44 | 35,578 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,401 |
| Top U.S. Universities | 0 | - | 4.15 | 145,379 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,349 |
| Arms Exports - United States | 0 | - | 4.77 | 62,526 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,555 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,179 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,540 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.22 | 10,875 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,067 |
| State Quiz - Alaska | 0 | - | 4.42 | 42,135 |
| State Quiz - Arizona | 0 | - | 4.44 | 36,783 |
| California Cities Map Quiz | 0 | - | 4.50 | 88,048 |
| State Quiz - California | 0 | - | 4.69 | 64,557 |
| State Quiz - Florida | 0 | - | 4.47 | 62,423 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,932 |
| Countries that Visit Florida the Most | 0 | - | 4.70 | 72,434 |
| State Quiz - Georgia | 0 | - | 4.48 | 35,618 |
| Countries Closest to Hawaii | 0 | - | 4.55 | 53,752 |
| State Quiz - Illinois | 0 | - | 4.44 | 33,436 |
| State Quiz - Kentucky | 0 | - | 4.42 | 32,527 |
| State Quiz - Minnesota | 0 | - | 4.41 | 38,864 |
| New York Cities Map Quiz | 0 | - | 4.55 | 42,268 |
| State Quiz - New York | 0 | - | 4.52 | 46,215 |
| State Quiz - New Jersey | 0 | - | 4.42 | 38,211 |
| State Quiz - Texas | 0 | - | 4.43 | 62,966 |
| State Quiz - Pennsylvania | 0 | - | 4.50 | 49,114 |
| State Quiz - Tennessee | 0 | - | 4.54 | 34,228 |
| State Quiz - Virginia | 0 | - | 4.53 | 40,366 |
| State Quiz - Washington | 0 | - | 4.45 | 36,496 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,830 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.75 | 38,490 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 39,213 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 52,992 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,897 |
| U.S. States with More Cows than People | 0 | - | 4.74 | 47,807 |
| U.S. States with Spanish Names | 0 | - | 4.50 | 87,993 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,515 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,153 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 35,072 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,106 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,847 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,927 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,638 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 113,985 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,324 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,243 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,267 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,240 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,936 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 54,080 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,435 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,274 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,440 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,315 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,807 |
| American Political Words | 0 | - | 4.39 | 23,439 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,311 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,533 |
| California Groups of Things | 0 | - | 4.25 | 45,527 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,292 |
| New York Groups of Things | 0 | - | 4.35 | 63,940 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,458 |
| U.S. States With Palm Trees | 0 | - | 4.52 | 45,833 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,102 |
| U.S. States by Emoji | 0 | - | 4.48 | 101,078 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,759 |
| U.S. State Shapes Quiz #1 | 0 | - | 4.74 | 153,176 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 102,178 |
| U.S. States that Start with N - Shape Quiz | 0 | - | 4.67 | 48,718 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,411 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,644 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,339 |
| The Iraq War | 0 | - | 4.47 | 15,674 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,616 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,755 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,619 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,603 |
| Free in the Answers | 0 | - | 4.08 | 51,623 |
| Movies Set in Chicago | 0 | - | 4.46 | 28,207 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,412 |
| Michigan Cities Map Quiz | 0 | - | 4.45 | 21,109 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,063 |
| Movies Set in Las Vegas | 0 | - | 4.13 | 32,146 |
| Texas Cities Map Quiz | 0 | - | 4.38 | 81,568 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,030 |
| Washington Cities Map Quiz | 0 | - | 4.48 | 24,081 |
| Washington D.C. Landmarks on a Map | 0 | - | 4.60 | 18,430 |
| Regions of U.S. States | 0 | - | 4.37 | 43,985 |
| States, Provinces & Territories that Touch the Appalachian Mountains | 0 | - | 4.59 | 20,399 |
| Top 10 U.S. States with the Longest Coastline | 0 | - | 4.45 | 50,860 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,810 |
| Movies by State | 0 | - | 4.27 | 40,566 |
| U.S. States with the Fewest Traffic Fatalities | 0 | - | 4.20 | 21,165 |
| U.S. States with the Most Traffic Fatalities | 0 | - | 4.10 | 19,163 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,389 |
| Monarchies of Europe | 0 | - | 4.90 | 98,354 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,753 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,439 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,104 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,324 |
| Monarchies of Asia | 0 | - | 4.97 | 71,226 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,023 |
| Battle to Country | 0 | - | 4.91 | 53,534 |
| U.S States with the Most Cows | 0 | - | 4.63 | 29,864 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,089 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,418 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,435 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,818 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,604 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,442 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,386 |
| U.S. Geography by Letter - N | 0 | - | 3.80 | 52,857 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 48,896 |
| U.S. Geography by Letter - F | 0 | - | 3.84 | 45,150 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 41,603 |
| U.S. Geography by Letter - R | 0 | - | 4.18 | 34,574 |
