| The American Revolution | 0 | - | 4.52 | 54,298 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,712,169 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,306 |
| Vietnam War Countries | 0 | - | 4.82 | 94,414 |
| The Iraq War | 0 | - | 4.47 | 15,680 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,893 |
| The Vietnam War | 0 | - | 4.44 | 35,595 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,834 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,878 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,987 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,416 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,099 |
| The Persian Gulf War | 0 | - | 4.02 | 8,468 |
| United States Map Quiz | 0 | - | 4.98 | 4,165,060 |
| Arms Exports - United States | 0 | - | 4.77 | 62,572 |
| Harvard University | 0 | - | 4.15 | 8,310 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,484 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,629 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,786 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,840 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,182 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,014 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,831 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,221 |
| Presidential Middle Names | 0 | - | 4.41 | 60,484 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,495 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,710 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,080 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,517 |
| California A-Z | 0 | - | 4.49 | 28,814 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,966 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,807 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,237 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,920 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,660 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,190 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,013 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,972 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,679 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,021 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,190 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,062 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,974 |
| U.S. Senators by State | 0 | - | 4.44 | 40,020 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 194,005 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,285 |
| History of Florida | 0 | - | 4.45 | 9,850 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,514 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,474 |
| History of Texas | 0 | - | 4.43 | 14,663 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,085 |
| US States Quiz | 0 | - | 5.00 | 16,934,748 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,953 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,985 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,390 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,599 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,969 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,824 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,898 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,768 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,271 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 333,677 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,350 |
| Pixelated United States Map | 0 | - | 4.88 | 94,529 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,064 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,082 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,801 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,758 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,968 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,120 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,569 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,838 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,614 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,300 |
| First Ladies of the United States | 0 | - | 4.28 | 85,784 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,996 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,255 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,308 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,263 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,974 |
| History of California | 0 | - | 4.40 | 18,771 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,243 |
| History of Illinois | 0 | - | 4.24 | 11,241 |
| History of Maryland | 0 | - | 4.06 | 6,707 |
| History of Massachusetts | 0 | - | 4.14 | 8,408 |
| History of Michigan | 0 | - | 4.26 | 6,964 |
| History of New York | 0 | - | 4.36 | 16,385 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,098 |
| History of New Jersey | 0 | - | 4.38 | 7,288 |
| History of Ohio | 0 | - | 4.14 | 7,361 |
| History of Tennessee | 0 | - | 4.29 | 7,676 |
| History of Washington State | 0 | - | 4.27 | 6,891 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,367 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,200 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,303 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,816 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,776 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,440 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,766 |
| U.S. States By Population | 0 | - | 4.92 | 153,821 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,816 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,645 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,615 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,595 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,930 |
| US States with an Empty Map | 0 | - | 5.00 | 626,511 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,787 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,350 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,592 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,363 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,851 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,606 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,690 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,351 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,990 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,458 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,702 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,483 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,370 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,012 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,657 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,785 |
| Merged U.S. States | 0 | - | 4.37 | 44,283 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,868 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,521 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,138 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 73,015 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,641 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,537 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,741 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,198 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,347 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,820 |
| James Bond Countries Visited Map | 0 | - | 4.99 | 64,475 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,843 |
| Prime Ministers of the UK | 0 | - | 4.95 | 440,666 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,180 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,847 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,636 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,477 |
| Hindu Countries | 0 | - | 4.86 | 50,359 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,522 |
| South America Flags Map Quiz | 0 | - | 4.95 | 88,457 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,430 |
| Rivers of the United States | 0 | - | 4.93 | 66,406 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,421 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,365 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,690 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,754 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,687 |
| The John Adams Presidency | 0 | - | 4.12 | 8,765 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,751 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,875 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,716 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 47,048 |
| Hawaiian Islands | 0 | - | 4.83 | 42,807 |
| Movies Set in Chicago | 0 | - | 4.46 | 28,212 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,335 |
| New York Yankees Trivia | 0 | - | 4.29 | 7,237 |
| Movies Set in Las Vegas | 0 | - | 4.13 | 32,153 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,416 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,292 |
| U.S. State Flags | 0 | - | 4.89 | 171,609 |
| U.S. States that Border Canada | 0 | - | 4.91 | 185,793 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,478 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,114 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,659 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,403 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,141 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,743 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,798 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,404 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,057 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,428 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 119,199 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 62,054 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,285 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,052 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,743 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,074 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,486 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,876 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 80,622 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,229 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,962 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 83,074 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 75,327 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,270 |
| Biggest Axis-Controlled Cities | 0 | - | 4.44 | 48,955 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,862 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 221,183 |
| Territories of the United States | 0 | - | 4.80 | 52,496 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,767 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,795 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,329 |
| Cities by Wikipedia Descriptions #2 | 0 | - | 4.53 | 39,092 |
| U.S. Cities by Wikipedia Descriptions | 0 | - | 4.48 | 34,234 |
| American Monopoly Board - Map Quiz | 0 | - | 4.52 | 21,228 |
| Name a Valid Answer - United States #1 | 0 | - | 4.63 | 94,184 |
| U.S. Highway Signs By State | 0 | - | 4.46 | 15,541 |
