| U.S. Presidents Quiz | 0 | - | 5.00 | 3,694,044 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,241 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,369 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,514 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,621 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,837 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,219 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,635 |
| Assassinated U.S. Presidents | 0 | - | 4.62 | 94,544 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,718 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,951 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,274 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,713 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,965 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,384 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,217 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,642 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,172 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,180 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,742 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,184 |
| U.S. President Scramble | 0 | - | 4.40 | 116,722 |
| First Ladies of the United States | 0 | - | 4.28 | 85,601 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,665 |
| Presidential Middle Names | 0 | - | 4.41 | 60,184 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,867 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,490 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,201 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,660 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,448 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,397 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,815 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,389 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,947 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,012 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,486 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,250 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,127 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,623 |
| Presidential Actors | 0 | - | 4.36 | 19,164 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,317 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,723 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,671 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,929 |
| The John Adams Presidency | 0 | - | 4.12 | 8,742 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,300 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,341 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,620 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,675 |
| Prime Ministers of the UK | 0 | - | 4.95 | 438,471 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,183 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,510 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,048 |
| U.S. Presidents True or False | 0 | - | 3.96 | 15,594 |
| The George Washington Presidency | 0 | - | 4.03 | 14,540 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,203 |
| The Kennedy Family | 0 | - | 3.90 | 14,066 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,846 |
| US States Quiz | 0 | - | 5.00 | 16,856,867 |
| US States with an Empty Map | 0 | - | 5.00 | 624,005 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,118 |
| Random U.S. States on a Map | 0 | - | 4.96 | 625,907 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,846 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,700 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,138 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,342 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,519 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,681 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,069 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,778 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,543 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,586 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,911 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,748 |
| Top 10 U.S. Swing States in the 2024 Election | 0 | - | 4.51 | 75,169 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,288 |
| U.S. Senators by State | 0 | - | 4.45 | 39,937 |
| Hottest U.S. State Capitals | 0 | - | 4.77 | 29,181 |
| United States Map Quiz | 0 | - | 4.98 | 4,156,379 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,688,299 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,586 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,484 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,648 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,668 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 175,249 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,883 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 159,167 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,354 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 143,986 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,071 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,770 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,909 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,171 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,925 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,171 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,559 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,356 |
| Name the English Monarchs | 0 | - | 4.91 | 502,174 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,781 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,241 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,380 |
| Vietnam War Countries | 0 | - | 4.82 | 94,157 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,686 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,417 |
| The American Revolution | 0 | - | 4.52 | 54,234 |
| The American Civil War | 0 | - | 4.62 | 52,406 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,328 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,489 |
| Biggest Cities in the Confederate States in 1860 | 0 | - | 4.41 | 23,630 |
| History of Texas | 0 | - | 4.43 | 14,619 |
| Harvard University | 0 | - | 4.15 | 8,295 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,955 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,842 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,481 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,518 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 901,892 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,022,088 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 639,809 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,070 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,228 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,453 |
| North America Map Quiz | 0 | - | 4.98 | 248,211 |
| Central American Countries | 0 | - | 4.98 | 156,354 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,313 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,911 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,697 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,514 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.80 | 102,055 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,136 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,229 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,864 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,093 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,432 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,991 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,687 |
| Pixelated United States Map | 0 | - | 4.87 | 94,184 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 79,327 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,946 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,416 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,476 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,422 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,168 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,299 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,466 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,456 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,663 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,077 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,173 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,701 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,055 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 93,684 |
| Name a Valid U.S. State Capital #1 | 0 | - | 4.75 | 54,519 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,108 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,851 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,421 |
| Name that Greek Letter | 0 | - | 4.93 | 323,301 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,306 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,881 |
| Countries in World War I | 0 | - | 4.88 | 228,004 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,749 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,300 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,086 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,425 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,589 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,219 |
| People on Money - United States | 0 | - | 4.31 | 63,336 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 79,208 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 60,161 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,029 |
| The Vietnam War | 0 | - | 4.44 | 35,508 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,083 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,264 |
| American Revolution Decoder | 0 | - | 4.10 | 20,949 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 30,020 |
| History of New York | 0 | - | 4.36 | 16,347 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,219 |
| History of California | 0 | - | 4.40 | 18,751 |
| History of Illinois | 0 | - | 4.24 | 11,218 |
| History of Florida | 0 | - | 4.45 | 9,823 |
| History of Massachusetts | 0 | - | 4.14 | 8,388 |
| History of Tennessee | 0 | - | 4.29 | 7,659 |
| History of Ohio | 0 | - | 4.14 | 7,342 |
| History of Washington State | 0 | - | 4.27 | 6,877 |
| History of New Jersey | 0 | - | 4.38 | 7,256 |
| History of Michigan | 0 | - | 4.26 | 6,942 |
| Ultimate Harry Potter Name Game | 0 | - | 4.94 | 493,180 |
| Top 100 Harry Potter Characters by Mention | 0 | - | 4.93 | 393,658 |
| Groups of Things - Harry Potter | 0 | - | 4.82 | 281,572 |
| EU Countries Quiz | 0 | - | 4.99 | 273,469 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,094 |
| NATO Countries | 0 | - | 4.98 | 279,803 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,999 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,762 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,042 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,249 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,288 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,059 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,098 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,794 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,475 |
