| U.S. Presidents Quiz | 0 | - | 5.00 | 3,676,921 |
| Vietnam War Countries | 0 | - | 4.83 | 93,927 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,820 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,787 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,984 |
| US States Quiz | 0 | - | 5.00 | 16,789,850 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,681 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,382 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,209 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,310 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,994 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,375 |
| Presidential Middle Names | 0 | - | 4.41 | 59,971 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,019 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,249 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,293 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,957 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,418 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,974 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,975 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,436 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,669 |
| U.S. States By Population | 0 | - | 4.92 | 152,832 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,945 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,196 |
| US States with an Empty Map | 0 | - | 5.00 | 621,683 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,990 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,012 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,316 |
| U.S. Senators by State | 0 | - | 4.45 | 39,860 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,871 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,713 |
| The American Revolution | 0 | - | 4.52 | 54,161 |
| California A-Z | 0 | - | 4.49 | 28,748 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 504,353 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,146 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,434 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,592 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,315 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,718 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,207 |
| First Ladies of the United States | 0 | - | 4.28 | 85,400 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,166 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,718 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,101 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,893 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,181 |
| U.S. State Flags | 0 | - | 4.89 | 169,015 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,813 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,911 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,040 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,586 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,744 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,989 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,571 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 41,749 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,883 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,791 |
| California... or Florida? | 0 | - | 4.60 | 51,185 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,524 |
| Top 10 Boston Celtics Players | 0 | - | 4.05 | 23,709 |
| Boston Celtics Trivia | 0 | - | 4.12 | 14,896 |
| New York City A-Z | 0 | - | 4.18 | 32,243 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,528,583 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,368 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,246 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,046 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 53,704 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,276 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 37,038 |
| Random U.S. States on a Map | 0 | - | 4.96 | 623,919 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,475 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,402 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,552 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,439 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,729 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,957 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,543 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,253 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,268 |
| The Iraq War | 0 | - | 4.47 | 15,609 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,070 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,233 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,906 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,200 |
| Cities by Wikipedia Descriptions #2 | 0 | - | 4.53 | 38,979 |
| U.S. Cities by Wikipedia Descriptions | 0 | - | 4.48 | 34,120 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,097 |
| Which City in California? | 0 | - | 4.56 | 31,974 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,709 |
| History of Florida | 0 | - | 4.45 | 9,796 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,519 |
| History of Texas | 0 | - | 4.43 | 14,588 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,712 |
| U.S. States by Unofficial Motto | 0 | - | 4.47 | 23,067 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,483 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,015 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,219 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,564 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,823 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,613 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,106 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,846 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 242,490 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 330,038 |
| Pixelated United States Map | 0 | - | 4.89 | 93,865 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,066 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,321 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,868 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,709 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,459 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 622,960 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,560 |
| The George Washington Presidency | 0 | - | 4.03 | 14,511 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,693 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,575 |
| The John Adams Presidency | 0 | - | 4.12 | 8,709 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,907 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,715 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,271 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,640 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,813 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,801 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,774 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,085 |
| New York Cities Map Quiz | 0 | - | 4.54 | 42,148 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,940 |
| Las Vegas Casinos | 0 | - | 4.12 | 38,020 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,929 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,230 |
| New England States | 0 | - | 4.51 | 59,762 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,784 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 42,869 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,386,084 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,624 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,662 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,292 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,958 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,382 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,118 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,584 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,242 |
| US States by Borders in 30 Seconds | 0 | - | 4.67 | 2,673,128 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,846 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,801 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,308 |
| U.S. States by Borders | 0 | - | 4.61 | 35,209 |
| Most Visited U.S. States by JetPunkers | 0 | - | 4.32 | 44,443 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,876 |
| Save Americans by Guessing U.S. States | 0 | - | 4.63 | 184,244 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,375 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,853 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,705 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,609 |
| A Superlative for Every U.S. State | 0 | - | 4.44 | 28,003 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 22,985 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,589 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,401 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,906 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,351 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,009 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,240 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 17,900 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,852 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,183 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,450 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,553 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,494 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,751 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 119,934 |
| The Persian Gulf War | 0 | - | 4.02 | 8,429 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,465 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,692 |
| Hindu Countries | 0 | - | 4.86 | 49,870 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,271 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,972 |
| Rivers of the United States | 0 | - | 4.93 | 65,874 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,455 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,896 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,522 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,224 |
| Arms Exports - United States | 0 | - | 4.75 | 62,053 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,343 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,124 |
| Mayors of New York City | 0 | - | 3.96 | 12,181 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,863 |
| History of California | 0 | - | 4.40 | 18,726 |
| Golden State Warriors Trivia | 0 | - | 4.23 | 24,806 |
| Los Angeles Lakers Trivia | 0 | - | 4.15 | 26,500 |
| Los Angeles A-Z | 0 | - | 4.20 | 9,494 |
| Countries that Visit Florida the Most | 0 | - | 4.70 | 71,893 |
| Which City in Florida? | 0 | - | 4.61 | 10,961 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,198 |
| History of Illinois | 0 | - | 4.24 | 11,198 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,791 |
| History of Maryland | 0 | - | 4.06 | 6,672 |
| History of Massachusetts | 0 | - | 4.14 | 8,363 |
| History of Michigan | 0 | - | 4.26 | 6,926 |
| New York Counties | 0 | - | 4.65 | 50,237 |
| History of New York | 0 | - | 4.36 | 16,319 |
