| The American Revolution | 0 | - | 4.52 | 54,050 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,653,080 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,184 |
| Vietnam War Countries | 0 | - | 4.83 | 93,587 |
| The Iraq War | 0 | - | 4.47 | 15,549 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,444 |
| The Vietnam War | 0 | - | 4.43 | 35,288 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,794 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,693 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,322 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,853 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,597 |
| The Persian Gulf War | 0 | - | 4.02 | 8,400 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,359 |
| Arms Exports - United States | 0 | - | 4.70 | 54,337 |
| Harvard University | 0 | - | 4.15 | 8,260 |
| Six Flags Over Texas | 0 | - | 4.79 | 63,003 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,486 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,456 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,372 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,881 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,899 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,925 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,459 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,991 |
| Presidential Middle Names | 0 | - | 4.41 | 59,690 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,718 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,800 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,733 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,161 |
| California A-Z | 0 | - | 4.49 | 28,703 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,343 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,806 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,221 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,851 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,347 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,942 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,831 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,297 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,639 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,851 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,123 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,834 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,732 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,509 |
| U.S. Senators by State | 0 | - | 4.45 | 39,745 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,515 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,384 |
| History of Florida | 0 | - | 4.45 | 9,763 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,042 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,609 |
| History of Texas | 0 | - | 4.43 | 14,552 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,479 |
| US States Quiz | 0 | - | 5.00 | 16,696,205 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,223 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,219 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,938 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,781 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,218 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,224 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,654 |
| Hindu Countries | 0 | - | 4.85 | 49,552 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,165 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,946 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,797 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,879 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 39,274 |
| Pixelated United States Map | 0 | - | 4.89 | 93,453 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,439 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,828 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,382 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,337 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,537 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,878 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,374 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,669 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,163 |
| First Ladies of the United States | 0 | - | 4.28 | 85,230 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,812 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,110 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,263 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,998 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,692 |
| History of California | 0 | - | 4.40 | 18,694 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,178 |
| History of Illinois | 0 | - | 4.24 | 11,175 |
| History of Maryland | 0 | - | 4.06 | 6,648 |
| History of Massachusetts | 0 | - | 4.14 | 8,327 |
| History of Michigan | 0 | - | 4.26 | 6,902 |
| History of New York | 0 | - | 4.36 | 16,281 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,969 |
| History of New Jersey | 0 | - | 4.38 | 7,204 |
| History of Ohio | 0 | - | 4.14 | 7,307 |
| History of Tennessee | 0 | - | 4.29 | 7,632 |
| History of Washington State | 0 | - | 4.27 | 6,837 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,221 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,702 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,705 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,333 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,380 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,629 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,878 |
| U.S. States By Population | 0 | - | 4.92 | 152,334 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,374 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,847 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,178 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 51,662 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,551 |
| US States with an Empty Map | 0 | - | 5.00 | 618,664 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,884 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,026 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,534 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,755 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,866 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,263 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,470 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,853 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,068 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,466 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,060 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,653 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,078 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,073 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,924 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,816 |
| Merged U.S. States | 0 | - | 4.36 | 43,852 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,682 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,681 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,128 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,098 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,898 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,946 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,454 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,532 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,218 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,823 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,426 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,213 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,538 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,196 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,256 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,707 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,410 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,315 |
| South America Flags Map Quiz | 0 | - | 4.95 | 86,583 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,969 |
| Rivers of the United States | 0 | - | 4.93 | 65,495 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,394 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,600 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,457 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,658 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,496 |
| The John Adams Presidency | 0 | - | 4.12 | 8,676 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,681 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,770 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,290 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,490 |
| Hawaiian Islands | 0 | - | 4.83 | 42,424 |
| Movies Set in Chicago | 0 | - | 4.46 | 28,143 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,423 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,117 |
| Movies Set in Las Vegas | 0 | - | 4.13 | 32,085 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,083 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,074 |
| U.S. State Flags | 0 | - | 4.89 | 167,004 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,367 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,082 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 40,972 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,640 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,190 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,974 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,549 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,252 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,845 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,633 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,028 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,554 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,536 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,639 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,669 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,759 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,357 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,661 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,503 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,493 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,888 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,774 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,672 |
| Biggest Axis-Controlled Cities | 0 | - | 4.43 | 48,589 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,611 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,629 |
| Territories of the United States | 0 | - | 4.79 | 52,131 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,369 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,524 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,725 |
| Cities by Wikipedia Descriptions #2 | 0 | - | 4.53 | 38,904 |
| U.S. Cities by Wikipedia Descriptions | 0 | - | 4.48 | 34,056 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,136 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,427 |
| U.S. Highway Signs By State | 0 | - | 4.46 | 15,384 |
