| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,863 |
| Vietnam War Countries | 0 | - | 4.83 | 93,841 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,669,897 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 424,678 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,824 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 190,502 |
| Play-Doh Presidents | 0 | - | 5.00 | 81,883 |
| Countries of Europe After World War II | 0 | - | 4.99 | 187,492 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,770 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,411 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,411 |
| Random U.S. States on a Map | 0 | - | 4.96 | 623,195 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,997 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,199 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,831 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,270 |
| Presidential Middle Names | 0 | - | 4.41 | 59,872 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,856 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,923 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,111 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,828 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,249 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,258 |
| American Founding Fathers | 0 | - | 4.41 | 23,096 |
| American Revolution Decoder | 0 | - | 4.10 | 20,898 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,645 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 143,701 |
| The Iraq War | 0 | - | 4.47 | 15,584 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 303,982 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,618 |
| United States Map Quiz | 0 | - | 4.98 | 4,146,886 |
| Arms Exports - United States | 0 | - | 4.75 | 61,634 |
| U.S. Vice Presidents | 0 | - | 4.39 | 135,519 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,190 |
| First Ladies of the United States | 0 | - | 4.28 | 85,346 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,151 |
| First Names of U.S. Presidents | 0 | - | 4.85 | 380,187 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,613 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,066 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,872 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,560 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,214 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 219,322 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,106 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,724 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,410 |
| The Persian Gulf War | 0 | - | 4.02 | 8,421 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,503 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,118 |
| U.S. President Scramble | 0 | - | 4.40 | 116,403 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,072 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.49 | 28,676 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,759 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,146 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,136 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,422 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,222 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,095 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,146 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,492 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,706 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,941 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,106 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,638 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,954 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,633 |
| U.S. Senators by State | 0 | - | 4.45 | 39,825 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,534 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 19,976 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,680 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,550 |
| The John Adams Presidency | 0 | - | 4.12 | 8,701 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,706 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,799 |
| The Kennedy Family | 0 | - | 3.90 | 14,044 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,358 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,846 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,645 |
| US States Quiz | 0 | - | 5.00 | 16,761,589 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,951 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,407 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,759 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,864 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,410 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,291 |
| Countries of the German Empire | 0 | - | 4.51 | 37,761 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,335 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,718 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,604 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,904 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,165 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,909 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 329,340 |
| Pixelated United States Map | 0 | - | 4.89 | 93,742 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,888 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,167 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,739 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,028 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 621,549 |
| Presidential Actors | 0 | - | 4.36 | 19,101 |
| The George Washington Presidency | 0 | - | 4.03 | 14,498 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,897 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,633 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,303 |
| California A-Z | 0 | - | 4.49 | 28,737 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,116 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,677 |
| The Most Recent... United States | 0 | - | 4.45 | 18,355 |
| The American Civil War | 0 | - | 4.62 | 52,249 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,222 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 503,613 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,815 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,812 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,218 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,465 |
| U.S. States By Population | 0 | - | 4.92 | 152,692 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,788 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,100 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,983 |
| US States with an Empty Map | 0 | - | 5.00 | 620,862 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,112 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,117 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,875 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,938 |
| Draw All US State Borders | 0 | - | 4.99 | 134,842 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,187 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,394 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,283 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,750 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,232 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,900 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,330 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,137 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,087 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,189 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,379 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,796 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,086 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,587 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,291 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,762 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,048 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,754 |
| Prime Ministers of the UK | 0 | - | 4.96 | 436,213 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,449 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,406 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,903 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,477 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 88,734 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,228 |
| Rivers of the United States | 0 | - | 4.93 | 65,743 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,733 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,274 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,039 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,012 |
| Movies with America in the Title | 0 | - | 4.17 | 28,731 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,701 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,652 |
| History of Florida | 0 | - | 4.45 | 9,785 |
| Hawaiian Islands | 0 | - | 4.83 | 42,529 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,689 |
| Harvard University | 0 | - | 4.15 | 8,277 |
| History of Texas | 0 | - | 4.43 | 14,574 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,188 |
| American History Quotes #1 | 0 | - | 4.37 | 95,771 |
| People on Money - United States | 0 | - | 4.31 | 63,251 |
| American History Quotes #2 | 0 | - | 4.38 | 41,261 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,322 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,799 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,036 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,673 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,130 |
| U.S. State Flags | 0 | - | 4.89 | 168,429 |
| U.S. States that Border Canada | 0 | - | 4.91 | 183,402 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,335 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,211 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,026 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,412 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,900 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,424 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,147 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,995 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,427 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,665 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,826 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 57,714 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 71,016 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,539 |
| Biggest Trading Partners - Spain | 0 | - | 4.91 | 53,606 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,806 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,133 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,815 |
| Biggest Axis-Controlled Cities | 0 | - | 4.43 | 48,712 |
| Flags of WW1 | 0 | - | 4.60 | 38,106 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,147 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,938 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 217,796 |
| Territories of the United States | 0 | - | 4.79 | 52,235 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.78 | 39,462 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,892 |
