| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,298 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,525 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 427,918 |
| Vietnam War Countries | 0 | - | 4.82 | 94,494 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 632,666 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,718,205 |
| U.S. Senators by State | 0 | - | 4.44 | 40,061 |
| Play-Doh Presidents | 0 | - | 5.00 | 82,736 |
| Random U.S. States on a Map | 0 | - | 4.96 | 629,113 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,879 |
| Presidents that Beat Thomas Jefferson | 0 | - | 4.49 | 25,056 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,721 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,570 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,362 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 24,026 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 305,917 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,430 |
| US States Quiz | 0 | - | 5.00 | 16,959,781 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,998 |
| Category Elimination - U.S. States #2 | 0 | - | 4.83 | 135,254 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,214 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,492 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,371 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 194,201 |
| The American Revolution | 0 | - | 4.52 | 54,323 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,772 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,991 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,999 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,648 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,999 |
| U.S. States By Population | 0 | - | 4.92 | 153,953 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,981 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,752 |
| US States with an Empty Map | 0 | - | 5.00 | 627,399 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,706 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,438 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,950 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,025 |
| Presidential Actors | 0 | - | 4.36 | 19,226 |
| U.S. President Scramble | 0 | - | 4.40 | 117,336 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,055 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,093 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,055 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,936 |
| Most Common Immigrant Origin by U.S. State | 0 | - | 4.90 | 67,774 |
| Draw All US State Borders | 0 | - | 4.99 | 139,742 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,639 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,754 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,882 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,447 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 383,093 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,356 |
| Colonies of the Americas in 1775 with a Map | 0 | - | 4.88 | 19,868 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,537 |
| U.S. State Flags | 0 | - | 4.89 | 172,122 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,166 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 162,055 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,772 |
| U.S. States Closest to Tokyo | 0 | - | 4.89 | 61,035 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,916 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,226 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,162 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,036 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,398 |
| Presidential Middle Names | 0 | - | 4.41 | 60,590 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,254 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,560 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,795 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,142 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,565 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,298 |
| U.S. Presidents by Picture - Multiple Choice | 0 | - | 4.50 | 28,969 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,027 |
| California A-Z | 0 | - | 4.49 | 28,826 |
| California... or Florida? | 0 | - | 4.60 | 51,755 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,551,269 |
| U.S. States by Church Attendance | 0 | - | 4.59 | 32,526 |
| U.S. States with the Most Billionaires | 0 | - | 4.51 | 50,519 |
| Top U.S. States in Crude Oil Production | 0 | - | 4.51 | 41,123 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,157 |
| Least Visited U.S. States by JetPunkers | 0 | - | 4.44 | 70,864 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,047 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,076 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,182 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,476 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,048 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,756 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,322 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,577 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,142 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,795 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,263 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,738 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,038 |
| History of Florida | 0 | - | 4.45 | 9,863 |
| The Life of Martin Luther King Jr. | 0 | - | 4.73 | 11,129 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,754 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,586 |
| History of Texas | 0 | - | 4.43 | 14,676 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,169 |
| U.S. History Timeline Quiz | 0 | - | 4.96 | 57,124 |
| New England States | 0 | - | 4.51 | 59,872 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,396,748 |
| U.S. States by Land Area | 0 | - | 4.63 | 52,983 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,087 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,027 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,689,765 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,215 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,085 |
| U.S. States Richer than Their Neighbors | 0 | - | 4.43 | 27,426 |
| U.S. States by Borders | 0 | - | 4.61 | 35,429 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 187,908 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,633 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,252 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 145,314 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,567 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 97,737 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,936 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,865 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,329 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,430 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,703 |
| Pixelated United States Map | 0 | - | 4.88 | 94,643 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,247 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,231 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,962 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,310 |
| Arms Exports - United States | 0 | - | 4.77 | 62,636 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,578 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,756 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,326 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,714 |
| First Ladies of the United States | 0 | - | 4.28 | 85,850 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,279 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,377 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,134 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,311 |
| Add a Letter - Make a U.S. President | 0 | - | 4.58 | 24,061 |
| The Barack Obama Presidency | 0 | - | 4.13 | 25,468 |
| The Kennedy Family | 0 | - | 3.90 | 14,090 |
| History of California | 0 | - | 4.40 | 18,785 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,251 |
| History of Illinois | 0 | - | 4.24 | 11,248 |
| History of Maryland | 0 | - | 4.06 | 6,719 |
| History of Massachusetts | 0 | - | 4.14 | 8,417 |
| Top 10 Boston Red Sox of All-Time | 0 | - | 4.02 | 11,900 |
| History of Michigan | 0 | - | 4.26 | 6,972 |
| New York City A-Z | 0 | - | 4.18 | 32,357 |
| History of New York | 0 | - | 4.36 | 16,401 |
| History of New Jersey | 0 | - | 4.38 | 7,299 |
| History of Ohio | 0 | - | 4.14 | 7,371 |
| History of Tennessee | 0 | - | 4.29 | 7,682 |
| History of Washington State | 0 | - | 4.27 | 6,898 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,554 |
| U.S. State Quarters Picture Quiz #1 | 0 | - | 4.45 | 52,879 |
| U.S. State Quarters Picture Quiz #2 | 0 | - | 4.75 | 38,526 |
| U.S. States by Clue #1 | 0 | - | 4.51 | 39,330 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,067 |
| Top 10 Most Jewish U.S. States | 0 | - | 4.31 | 43,081 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.64 | 65,995 |
| U.S. States with More Cows than People | 0 | - | 4.74 | 47,848 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,670 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,578 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,293 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,711 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,938 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,402 |
| U.S. States with Spanish Names | 0 | - | 4.50 | 88,124 |
| Most Visited U.S. States by JetPunkers | 0 | - | 4.30 | 44,635 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,541 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 235,032 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,281 |
| Name a Valid U.S. State #3 | 0 | - | 4.78 | 49,218 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,894 |
| Longest U.S. State Borders | 0 | - | 4.69 | 40,043 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,631 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,718 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,498 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,067 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,561 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,751 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,551 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,269 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,912 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,886 |
| Draw All US State Borders - Extreme | 0 | - | 4.99 | 79,051 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,228 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,419 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,917 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 238,014 |
| Prime Ministers of the UK | 0 | - | 4.95 | 441,297 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,366 |
| The Iraq War | 0 | - | 4.47 | 15,690 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,951 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,732 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,769 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,568 |
| U.S. Presidents Who Added the Most Territory | 0 | - | 4.66 | 14,195 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,909 |
| Rivers of the United States | 0 | - | 4.93 | 66,535 |
