| The American Revolution | 0 | - | 4.52 | 54,039 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,650,023 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,174 |
| Vietnam War Countries | 0 | - | 4.83 | 93,548 |
| The Iraq War | 0 | - | 4.47 | 15,542 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,390 |
| The Vietnam War | 0 | - | 4.43 | 35,279 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,658 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,596 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,243 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,824 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,578 |
| The Persian Gulf War | 0 | - | 4.02 | 8,398 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,170 |
| Arms Exports - United States | 0 | - | 4.70 | 54,288 |
| Harvard University | 0 | - | 4.15 | 8,258 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,981 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,069 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,329 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,349 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 34,869 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,779 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,871 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,386 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,930 |
| Presidential Middle Names | 0 | - | 4.41 | 59,647 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,683 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,761 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,713 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,148 |
| California A-Z | 0 | - | 4.49 | 28,700 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,209 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,721 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,193 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,806 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,312 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,884 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,395 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,214 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,565 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,789 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,061 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,084 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,717 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,492 |
| U.S. Senators by State | 0 | - | 4.44 | 39,735 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,432 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,332 |
| History of Florida | 0 | - | 4.45 | 9,758 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 72,997 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,560 |
| History of Texas | 0 | - | 4.43 | 14,547 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,447 |
| US States Quiz | 0 | - | 5.00 | 16,684,387 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,128 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,130 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,918 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,695 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,094 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,173 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,613 |
| Hindu Countries | 0 | - | 4.85 | 49,459 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,136 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 60,905 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,778 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,662 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.49 | 37,101 |
| Pixelated United States Map | 0 | - | 4.89 | 93,385 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,337 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,757 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,308 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,319 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,421 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 28,871 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,366 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.49 | 11,664 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,156 |
| First Ladies of the United States | 0 | - | 4.28 | 85,210 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,808 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,101 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,201 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,989 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,676 |
| History of California | 0 | - | 4.40 | 18,690 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,173 |
| History of Illinois | 0 | - | 4.24 | 11,172 |
| History of Maryland | 0 | - | 4.06 | 6,648 |
| History of Massachusetts | 0 | - | 4.14 | 8,322 |
| History of Michigan | 0 | - | 4.26 | 6,901 |
| History of New York | 0 | - | 4.36 | 16,277 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,959 |
| History of New Jersey | 0 | - | 4.38 | 7,202 |
| History of Ohio | 0 | - | 4.14 | 7,305 |
| History of Tennessee | 0 | - | 4.29 | 7,628 |
| History of Washington State | 0 | - | 4.27 | 6,835 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,156 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,621 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,366 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,267 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,318 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,540 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,803 |
| U.S. States By Population | 0 | - | 4.92 | 152,289 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,296 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,795 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,155 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.45 | 49,731 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,484 |
| US States with an Empty Map | 0 | - | 5.00 | 618,312 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,853 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,007 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,470 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,726 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,804 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,249 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,458 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,800 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,044 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,419 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,038 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,626 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,061 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,009 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,887 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,769 |
| Merged U.S. States | 0 | - | 4.36 | 43,832 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,673 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,584 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,069 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,057 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,818 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,889 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,392 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,440 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,211 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 97,779 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 63,342 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,114 |
| Prime Ministers of the UK | 0 | - | 4.96 | 434,233 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,152 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,212 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,659 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,348 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,234 |
| South America Flags Map Quiz | 0 | - | 4.95 | 86,399 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,962 |
| Rivers of the United States | 0 | - | 4.93 | 65,441 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,340 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 423,394 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,453 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,653 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,454 |
| The John Adams Presidency | 0 | - | 4.12 | 8,673 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,678 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,765 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,226 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,463 |
| Hawaiian Islands | 0 | - | 4.83 | 42,411 |
| Movies Set in Chicago | 0 | - | 4.46 | 28,140 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,384 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,111 |
| Movies Set in Las Vegas | 0 | - | 4.13 | 32,083 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,066 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,064 |
| U.S. State Flags | 0 | - | 4.89 | 166,796 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,210 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,059 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 40,960 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,505 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,180 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,957 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,493 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,222 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,797 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,573 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 90,966 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,539 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,518 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,610 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,651 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,705 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,320 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,625 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,483 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,438 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,814 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,706 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,646 |
| Biggest Axis-Controlled Cities | 0 | - | 4.43 | 48,576 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,551 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,398 |
| Territories of the United States | 0 | - | 4.79 | 52,109 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,358 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,461 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,699 |
| Cities by Wikipedia Descriptions #2 | 0 | - | 4.53 | 38,900 |
| U.S. Cities by Wikipedia Descriptions | 0 | - | 4.48 | 34,050 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,132 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,395 |
| U.S. Highway Signs By State | 0 | - | 4.46 | 15,377 |
