| U.S. Presidents Quiz | 0 | - | 5.00 | 3,697,121 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,736 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,393 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,280 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,987 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,511 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,952 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,902 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,698 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,456 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,772 |
| Presidential Middle Names | 0 | - | 4.41 | 60,226 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,313 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,586 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,416 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,980 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,881 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,837 |
| U.S. President Scramble | 0 | - | 4.40 | 116,752 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,240 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,254 |
| First Ladies of the United States | 0 | - | 4.28 | 85,627 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,224 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,083 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,188 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,319 |
| Add a Letter - Make a U.S. President | 0 | - | 4.57 | 23,958 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,249 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,827 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,734 |
| Vietnam War Countries | 0 | - | 4.82 | 94,202 |
| Presidents that Beat Thomas Jefferson | 0 | - | 4.49 | 24,945 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,190 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,632 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,729 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,647 |
| The John Adams Presidency | 0 | - | 4.12 | 8,747 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,742 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,851 |
| The George Washington Presidency | 0 | - | 4.03 | 14,545 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,933 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,673 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,184 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,055 |
| The Kennedy Family | 0 | - | 3.90 | 14,071 |
| George Washington... or George W. Bush? | 0 | - | 4.16 | 12,265 |
| U.S. Senators by State | 0 | - | 4.44 | 39,946 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,395 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,497 |
| Presidential Actors | 0 | - | 4.36 | 19,170 |
| Random U.S. States on a Map | 0 | - | 4.96 | 626,280 |
| The American Revolution | 0 | - | 4.52 | 54,250 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,754 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 627,304 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,135 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,669 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,600 |
| United States Map Quiz | 0 | - | 4.98 | 4,157,879 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,204 |
| U.S. Presidential Last Names as Baby Names | 0 | - | 4.19 | 33,576 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,227 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,900 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,604 |
| The Iraq War | 0 | - | 4.47 | 15,653 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,722 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,501 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,316 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,182 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,457 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,495 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,822 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,017 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,136 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,567 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,720 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,831 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,461 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,929 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,422 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,609 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,447 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,452 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,923 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,863 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,980 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,203 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,925 |
| US States Quiz | 0 | - | 5.00 | 16,869,113 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,977 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,183 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 81,528 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,627 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,960 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,837 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,581 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,964 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,562 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,244 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,164 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,852 |
| Pixelated United States Map | 0 | - | 4.87 | 94,247 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,633 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,738 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,411 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,395 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,071 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,790 |
| American Revolution Decoder | 0 | - | 4.10 | 20,956 |
| California A-Z | 0 | - | 4.49 | 28,788 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,349 |
| U.S. History for Dummies | 0 | - | 4.47 | 83,039 |
| The Most Recent... United States | 0 | - | 4.45 | 18,440 |
| The American Civil War | 0 | - | 4.62 | 52,412 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,266 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,839 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,412 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,381 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,392 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,958 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,245 |
| U.S. States By Population | 0 | - | 4.92 | 153,513 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,415 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,426 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,572 |
| US States with an Empty Map | 0 | - | 5.00 | 624,391 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,492 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,269 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,199 |
| Draw All US State Borders | 0 | - | 4.99 | 137,428 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,590 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,936 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,686 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,163 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,487 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,204 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,740 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,453 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,494 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 78,471 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,984 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,145 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,353 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,737 |
| All Modern-Day Countries Ever Controlled by Greeks | 0 | - | 4.98 | 54,117 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,096 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,829 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,260 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,522 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,377 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,350 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,713 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 69,871 |
| The Persian Gulf War | 0 | - | 4.02 | 8,449 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,643 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,230 |
| All Modern-Day Countries Ever Controlled by Chinese People | 0 | - | 4.82 | 54,797 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,257 |
| Rivers of the United States | 0 | - | 4.93 | 66,177 |
| Names of Generations | 0 | - | 4.09 | 44,844 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,140 |
| American Founding Fathers | 0 | - | 4.42 | 23,222 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,304 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,903 |
| History of Florida | 0 | - | 4.45 | 9,823 |
| Hawaiian Islands | 0 | - | 4.83 | 42,700 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,088 |
| Harvard University | 0 | - | 4.15 | 8,297 |
| History of Texas | 0 | - | 4.43 | 14,623 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,312 |
| American History Quotes #1 | 0 | - | 4.37 | 96,021 |
| People on Money - United States | 0 | - | 4.31 | 63,342 |
| American History Quotes #2 | 0 | - | 4.38 | 41,398 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,453 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,041 |
| Events in U.S. History | 0 | - | 4.41 | 28,663 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,109 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,730 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,236 |
| U.S. State Flags | 0 | - | 4.89 | 170,329 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,832 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,421 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,831 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,412 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,628 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,621 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,971 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,891 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,106 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,449 |
| All Modern-Day Countries Ever Controlled by French People | 0 | - | 4.99 | 58,065 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,861 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 493,318 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,665 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,429 |
| Random American Countries on a Map | 0 | - | 4.96 | 99,510 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 219,897 |
| Territories of the United States | 0 | - | 4.79 | 52,385 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,660 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,433 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,330 |
