| Deadliest U.S. Wars | 0 | - | 4.89 | 189,255 |
| Battle to Country | 0 | - | 4.91 | 52,523 |
| US States Quiz | 0 | - | 5.00 | 16,700,914 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,868 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,659 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,552 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,002 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,806 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,419 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,584 |
| US States with an Empty Map | 0 | - | 5.00 | 618,834 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,715 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,941 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,731 |
| The American Civil War | 0 | - | 4.62 | 52,160 |
| Rivers of the United States | 0 | - | 4.93 | 65,518 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,737 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,317 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,447 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,706 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,581 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,066 |
| Six Flags Over Texas | 0 | - | 4.79 | 63,011 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,484 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,455 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,653 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,526 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,518,611 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,551 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,507 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 39,748 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,347 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,882 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,670 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,654,416 |
| American Founding Fathers | 0 | - | 4.41 | 23,074 |
| People on Money - United States | 0 | - | 4.31 | 63,206 |
| 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 | 52,038 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,272 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,480 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,429 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,088 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,408 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,562 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,536 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,077 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,206 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,083 |
| 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 | 95,689 |
| American History Quotes #2 | 0 | - | 4.38 | 41,223 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,078 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,380,329 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,664,628 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,193 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,980 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,560 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,041 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,952 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,509 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,411 |
| Countries in World War I | 0 | - | 4.88 | 226,608 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,836 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,183 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,019 |
| 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 | 17,817 |
| The Vietnam War | 0 | - | 4.43 | 35,294 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,363 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,976 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,413 |
| Arms Exports - United States | 0 | - | 4.70 | 54,352 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,376 |
| U.S. Political Figures by Picture #1 | 0 | - | 4.14 | 26,073 |
| U.S. Political Figures by Picture #2 | 0 | - | 4.10 | 15,462 |
| Female Political Figures by Picture - U.S. | 0 | - | 4.20 | 10,807 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,741 |
| State Quiz - Alaska | 0 | - | 4.42 | 41,793 |
| State Quiz - Arizona | 0 | - | 4.44 | 36,495 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,639 |
| State Quiz - California | 0 | - | 4.68 | 63,966 |
| State Quiz - Florida | 0 | - | 4.47 | 61,941 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,634 |
| Countries that Visit Florida the Most | 0 | - | 4.72 | 71,137 |
| State Quiz - Georgia | 0 | - | 4.48 | 35,326 |
| Countries Closest to Hawaii | 0 | - | 4.54 | 53,242 |
| State Quiz - Illinois | 0 | - | 4.44 | 33,156 |
| State Quiz - Kentucky | 0 | - | 4.41 | 32,248 |
| State Quiz - Minnesota | 0 | - | 4.41 | 38,556 |
| New York Cities Map Quiz | 0 | - | 4.54 | 42,045 |
| State Quiz - New York | 0 | - | 4.52 | 45,744 |
| State Quiz - New Jersey | 0 | - | 4.42 | 37,894 |
| State Quiz - Texas | 0 | - | 4.43 | 62,509 |
| State Quiz - Pennsylvania | 0 | - | 4.50 | 48,631 |
| State Quiz - Tennessee | 0 | - | 4.54 | 33,903 |
| State Quiz - Virginia | 0 | - | 4.52 | 40,035 |
| State Quiz - Washington | 0 | - | 4.45 | 36,164 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,666 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.74 | 38,318 |
| U.S. States by Clue #1 | 0 | - | 4.53 | 38,615 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,663 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,411 |
| U.S. States with More Cows than People | 0 | - | 4.63 | 40,435 |
| U.S. States with Spanish Names | 0 | - | 4.50 | 87,304 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,416 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,483 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 34,928 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 48,696 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,581 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,385 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,449 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,034 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,228 |
| U.S. Geography by Letter - C | 0 | - | 4.26 | 73,346 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,321 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,317 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 49,007 |
| U.S. Geography by Letter - P | 0 | - | 4.34 | 47,391 |
| U.S. Geography by Letter - M | 0 | - | 4.13 | 52,605 |
| U.S. Geography by Letter - L | 0 | - | 4.03 | 40,363 |
| U.S. Geography by Letter - G | 0 | - | 4.12 | 38,608 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,340 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,378 |
| American Political Words | 0 | - | 4.39 | 23,341 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 379,571 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,135 |
| California Groups of Things | 0 | - | 4.25 | 45,267 |
| 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 | 8,329 |
| History of Michigan | 0 | - | 4.26 | 6,902 |
| New York Groups of Things | 0 | - | 4.38 | 59,942 |
| History of New York | 0 | - | 4.36 | 16,282 |
| History of New Jersey | 0 | - | 4.38 | 7,206 |
| 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 | 29,350 |
| 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 | 100,148 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,268 |
| U.S. State Shapes Quiz #1 | 0 | - | 4.74 | 152,368 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 101,765 |
| U.S. States that Start with N - Shape Quiz | 0 | - | 4.67 | 48,447 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,133 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,436 |
| 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 | 95,960 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,328 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,871 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,855 |
| Free in the Answers | 0 | - | 4.11 | 51,281 |
| Movies Set in Chicago | 0 | - | 4.46 | 28,145 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,072 |
| Michigan Cities Map Quiz | 0 | - | 4.45 | 20,905 |
| 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 | 81,302 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,493 |
| Washington Cities Map Quiz | 0 | - | 4.48 | 24,016 |
| Washington D.C. Landmarks on a Map | 0 | - | 4.61 | 18,283 |
| Regions of U.S. States | 0 | - | 4.37 | 43,471 |
| 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 | 365,266 |
| Movies by State | 0 | - | 4.27 | 40,444 |
| U.S. States with the Fewest Traffic Fatalities | 0 | - | 4.20 | 21,059 |
| U.S. States with the Most Traffic Fatalities | 0 | - | 4.10 | 19,044 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,215 |
| Monarchies of Europe | 0 | - | 4.90 | 97,312 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,948 |
| Monarchies of Asia | 0 | - | 4.97 | 70,602 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,432 |
| Countries in World War II | 0 | - | 4.53 | 904,530 |
| U.S States with the Most Cows | 0 | - | 4.63 | 29,545 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,898 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,679 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,176 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,363 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,097 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,095 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,087 |
| U.S. Geography by Letter - N | 0 | - | 3.79 | 52,161 |
| U.S. Geography by Letter - E | 0 | - | 3.73 | 48,199 |
| U.S. Geography by Letter - F | 0 | - | 3.86 | 44,448 |
| U.S. Geography by Letter - O | 0 | - | 3.43 | 33,795 |
| U.S. Geography by Letter - R | 0 | - | 4.15 | 30,270 |
| Mexico Country Quiz | 0 | - | 4.49 | 71,977 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,314 |
