| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,527 |
| Vietnam War Countries | 0 | - | 4.82 | 94,494 |
| Random U.S. States on a Map | 0 | - | 4.96 | 629,115 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,064 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,922 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,085 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,538 |
| US States Quiz | 0 | - | 5.00 | 16,960,178 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,007 |
| Category Elimination - U.S. States #2 | 0 | - | 4.83 | 135,260 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,218 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,718,287 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,305 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,738 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,551,306 |
| The American Revolution | 0 | - | 4.52 | 54,324 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,776 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,396,771 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,993 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,012 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,653 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,009 |
| U.S. States By Population | 0 | - | 4.92 | 153,959 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,983 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,755 |
| US States with an Empty Map | 0 | - | 5.00 | 627,414 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,706 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,440 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,952 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,311 |
| U.S. Senators by State | 0 | - | 4.44 | 40,061 |
| Which City in California? | 0 | - | 4.56 | 32,132 |
| History of Florida | 0 | - | 4.45 | 9,863 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,538 |
| History of Texas | 0 | - | 4.43 | 14,676 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,100 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,939 |
| Draw All US State Borders | 0 | - | 4.99 | 139,786 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,641 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,762 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,884 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,502 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,879 |
| Hawaiian Islands | 0 | - | 4.83 | 42,853 |
| Harvard University | 0 | - | 4.15 | 8,317 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 39,330 |
| U.S. State Flags | 0 | - | 4.89 | 172,128 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,170 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,284 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,219 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,495 |
| U.S. States Closest to Tokyo | 0 | - | 4.89 | 61,038 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,916 |
| History of California | 0 | - | 4.40 | 18,785 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 47,119 |
| Which City in Florida? | 0 | - | 4.61 | 11,018 |
| States That Beat Hawaii | 0 | - | 4.55 | 34,356 |
| History of Michigan | 0 | - | 4.26 | 6,972 |
| History of New York | 0 | - | 4.36 | 16,401 |
| Which City in New York State? | 0 | - | 4.60 | 16,035 |
| Which City in Texas? | 0 | - | 4.45 | 25,143 |
| Random General Knowledge - U.S. States | 0 | - | 4.46 | 42,119 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,159 |
| Random Point on Land to US State | 0 | - | 4.63 | 69,618 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,490 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,050 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,049 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,758 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,666 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,324 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,582 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,144 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,797 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,267 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,745 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,042 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,920 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 194,202 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,432 |
| States that Beat California | 0 | - | 4.54 | 63,799 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,129 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,757 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,588 |
| States that Beat New York | 0 | - | 4.50 | 45,206 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,169 |
| States that Beat Texas | 0 | - | 4.58 | 44,460 |
| New England States | 0 | - | 4.51 | 59,872 |
| U.S. States by Land Area | 0 | - | 4.63 | 52,985 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,087 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,028 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,689,789 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,216 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,085 |
| U.S. States by Borders | 0 | - | 4.61 | 35,431 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 187,915 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,635 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,253 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,631 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,571 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,568 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,912 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,869 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,543 |
| Name a Valid African Country | 0 | - | 4.98 | 154,758 |
| Countries that Beat Australia | 0 | - | 4.92 | 93,274 |
| U.S. Cities A-Z by Clue #1 | 0 | - | 4.36 | 39,900 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,329 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,450 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,707 |
| Pixelated United States Map | 0 | - | 4.88 | 94,643 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,250 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,232 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,964 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 632,692 |
| Presidential Actors | 0 | - | 4.36 | 19,226 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 24,026 |
| U.S. President Scramble | 0 | - | 4.40 | 117,340 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,356 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,298 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,027 |
| Colonies of the Americas in 1775 with a Map | 0 | - | 4.88 | 19,868 |
| States that Beat Alaska | 0 | - | 4.49 | 26,570 |
| State Quiz - Arizona | 0 | - | 4.44 | 36,844 |
| California Cities Map Quiz | 0 | - | 4.50 | 88,117 |
| California A-Z | 0 | - | 4.49 | 28,826 |
| State Quiz - California | 0 | - | 4.69 | 64,677 |
| Golden State Warriors Trivia | 0 | - | 4.25 | 25,023 |
| Los Angeles Lakers Trivia | 0 | - | 4.15 | 26,719 |
| State Quiz - Florida | 0 | - | 4.47 | 62,513 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,972 |
| Countries that Visit Florida the Most | 0 | - | 4.70 | 72,600 |
| States that Beat Florida | 0 | - | 4.32 | 40,945 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,252 |
| History of Illinois | 0 | - | 4.24 | 11,249 |
| History of Maryland | 0 | - | 4.06 | 6,719 |
| History of Massachusetts | 0 | - | 4.14 | 8,417 |
| Top 10 Boston Celtics Players | 0 | - | 4.05 | 23,919 |
| Boston Celtics Trivia | 0 | - | 4.12 | 15,144 |
| New York Cities Map Quiz | 0 | - | 4.55 | 42,323 |
| State Quiz - New York | 0 | - | 4.52 | 46,314 |
| Cities that Beat New York | 0 | - | 4.51 | 28,783 |
| States That Beat Montana | 0 | - | 4.49 | 25,714 |
| History of New Jersey | 0 | - | 4.38 | 7,299 |
| State Quiz - Texas | 0 | - | 4.43 | 63,093 |
| History of Ohio | 0 | - | 4.14 | 7,371 |
| History of Tennessee | 0 | - | 4.29 | 7,682 |
| History of Washington State | 0 | - | 4.27 | 6,899 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,558 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,879 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.75 | 38,526 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,067 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.64 | 65,996 |
| U.S. States with More Cows than People | 0 | - | 4.74 | 47,848 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,670 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,579 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,295 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,712 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,939 |
| U.S. States with Spanish Names | 0 | - | 4.50 | 88,129 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,541 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 235,035 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,895 |
| Longest U.S. State Borders | 0 | - | 4.69 | 40,045 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,631 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,718 |
| Tourist Attractions by U.S. State | 0 | - | 4.46 | 62,674 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,503 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,068 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,561 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,752 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,551 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,274 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,912 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,887 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 79,051 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,798 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,775 |
| Random Point on Land to European Country | 0 | - | 4.94 | 77,798 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,235 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,373 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,007 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,421 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,569 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,079 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,428 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,008 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,716 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,219 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,919 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 238,018 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,369 |
| The Iraq War | 0 | - | 4.47 | 15,690 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,952 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,317 |
| Countries that Beat China | 0 | - | 4.85 | 116,493 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,733 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,773 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,569 |
| Rivers of the United States | 0 | - | 4.93 | 66,535 |
| Names of Generations | 0 | - | 4.09 | 45,378 |
