| U.S. Presidents Quiz | 0 | - | 5.00 | 3,711,001 |
| Vietnam War Countries | 0 | - | 4.82 | 94,393 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,729 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,082 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,177 |
| US States Quiz | 0 | - | 5.00 | 16,929,377 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,567 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,733 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,908 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,946 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,984 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,783 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,095 |
| Presidential Middle Names | 0 | - | 4.41 | 60,461 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,480 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,687 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,500 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,430 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,177 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,782 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,721 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,405 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,732 |
| U.S. States By Population | 0 | - | 4.92 | 153,792 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,786 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,622 |
| US States with an Empty Map | 0 | - | 5.00 | 626,348 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,566 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,352 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,827 |
| U.S. Senators by State | 0 | - | 4.44 | 40,016 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,073 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,250 |
| The American Revolution | 0 | - | 4.52 | 54,296 |
| California A-Z | 0 | - | 4.49 | 28,810 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,173 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,898 |
| Draw All US State Borders | 0 | - | 4.99 | 138,990 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,468 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,598 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,499 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,565 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,292 |
| First Ladies of the United States | 0 | - | 4.28 | 85,774 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,253 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,295 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,248 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,010 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,473 |
| U.S. State Flags | 0 | - | 4.89 | 171,481 |
| U.S. States that Border Canada | 0 | - | 4.91 | 185,721 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,589 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,712 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,396 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,865 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,845 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,827 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,289 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,987 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,964 |
| California... or Florida? | 0 | - | 4.60 | 51,682 |
| Boston Red Sox Trivia | 0 | - | 4.09 | 7,562 |
| Top 10 Boston Celtics Players | 0 | - | 4.05 | 23,869 |
| Boston Celtics Trivia | 0 | - | 4.12 | 15,101 |
| New York City A-Z | 0 | - | 4.18 | 32,337 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,546,604 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,610 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,469 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,107 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,581 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,395 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,138 |
| Random U.S. States on a Map | 0 | - | 4.96 | 628,228 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,787 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,597 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,688 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,758 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,825 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,945 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,279 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,026 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,343 |
| The Iraq War | 0 | - | 4.47 | 15,677 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,398 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,643 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,817 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,654 |
| Cities by Wikipedia Descriptions #2 | 0 | - | 4.53 | 39,089 |
| U.S. Cities by Wikipedia Descriptions | 0 | - | 4.48 | 34,230 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,961 |
| Which City in California? | 0 | - | 4.56 | 32,095 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 47,040 |
| History of Florida | 0 | - | 4.45 | 9,846 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,475 |
| History of Texas | 0 | - | 4.43 | 14,660 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,068 |
| U.S. States by Unofficial Motto | 0 | - | 4.47 | 23,161 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,899 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,162 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,950 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,963 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,067 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 333,495 |
| Pixelated United States Map | 0 | - | 4.88 | 94,507 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,024 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,051 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,050 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,962 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,563 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 630,744 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,686 |
| The George Washington Presidency | 0 | - | 4.03 | 14,571 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,753 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,677 |
| The John Adams Presidency | 0 | - | 4.12 | 8,763 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,952 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,751 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,337 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,713 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,872 |
| California Cities Map Quiz | 0 | - | 4.50 | 88,063 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,940 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,118 |
| New York Cities Map Quiz | 0 | - | 4.55 | 42,276 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,448 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,095 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,325 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,304 |
| New England States | 0 | - | 4.51 | 59,845 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,009 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 43,038 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,394,451 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,917 |
| U.S. States by Land Area | 0 | - | 4.63 | 52,919 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,467 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,048 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,549 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,255 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 82,943 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,733 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,686,357 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,141 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 41,019 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,395 |
| U.S. States by Borders | 0 | - | 4.61 | 35,390 |
| Most Visited U.S. States by JetPunkers | 0 | - | 4.30 | 44,591 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,793 |
| Save Americans by Guessing U.S. States | 0 | - | 4.63 | 186,735 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,559 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,168 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,864 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,970 |
| A Superlative for Every U.S. State | 0 | - | 4.44 | 28,129 |
| Colleges by U.S. State - Multiple Choice | 0 | - | 4.57 | 23,081 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,331 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,976 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,444 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,694 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,469 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,765 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 18,053 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,092 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,923 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,992 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,486 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,341 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,565 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,827 |
| The Persian Gulf War | 0 | - | 4.02 | 8,467 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,829 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,458 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,808 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,493 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,865 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,740 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,260 |
| Rivers of the United States | 0 | - | 4.93 | 66,387 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,029 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,758 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,747 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,917 |
| Arms Exports - United States | 0 | - | 4.77 | 62,559 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,641 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,477 |
| Mayors of New York City | 0 | - | 3.96 | 12,254 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,656 |
| History of California | 0 | - | 4.40 | 18,771 |
| Golden State Warriors Trivia | 0 | - | 4.25 | 24,972 |
| Los Angeles Lakers Trivia | 0 | - | 4.15 | 26,670 |
| Los Angeles A-Z | 0 | - | 4.20 | 9,529 |
| Countries that Visit Florida the Most | 0 | - | 4.70 | 72,475 |
| Which City in Florida? | 0 | - | 4.61 | 11,004 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,242 |
| History of Illinois | 0 | - | 4.24 | 11,240 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,301 |
| History of Maryland | 0 | - | 4.06 | 6,705 |
| History of Massachusetts | 0 | - | 4.14 | 8,407 |
| History of Michigan | 0 | - | 4.26 | 6,962 |
| New York Counties | 0 | - | 4.65 | 50,862 |
| History of New York | 0 | - | 4.36 | 16,383 |
