| U.S. Presidents Quiz | 0 | - | 5.00 | 3,704,000 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 192,098 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,939 |
| Modern-Day Countries of the Persian Empire on a Map | 0 | - | 4.98 | 70,010 |
| Egypt Country Quiz | 0 | - | 4.83 | 77,602 |
| The Iraq War | 0 | - | 4.47 | 15,664 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,984 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,827 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,615 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,901 |
| Presidential Middle Names | 0 | - | 4.41 | 60,350 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,405 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,639 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,460 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,002 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,346 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,027 |
| The American Revolution | 0 | - | 4.52 | 54,268 |
| Byzantine History | 0 | - | 4.91 | 28,894 |
| Byzantine Emperors | 0 | - | 4.92 | 14,282 |
| Countries Bordering Iran | 0 | - | 4.83 | 95,384 |
| Countries that Border Iraq | 0 | - | 4.97 | 108,469 |
| The Persian Gulf War | 0 | - | 4.02 | 8,458 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,710 |
| Vietnam War Countries | 0 | - | 4.82 | 94,299 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,315 |
| Modern Day Countries of the Japanese Empire on a Map | 0 | - | 4.98 | 89,397 |
| United States Map Quiz | 0 | - | 4.98 | 4,161,562 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,794 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,382 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,270 |
| First Ladies of the United States | 0 | - | 4.28 | 85,695 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,236 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 77,193 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,225 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,106 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,404 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,846 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,957 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,042 |
| Asia Map Quiz | 0 | - | 4.99 | 918,068 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,830 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,844 |
| Countries Closest to Egypt | 0 | - | 4.83 | 101,119 |
| The Vietnam War | 0 | - | 4.44 | 35,558 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,136 |
| The Franklin D. Roosevelt Presidency | 0 | - | 4.43 | 23,968 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 382,088 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 47,925 |
| The American Civil War | 0 | - | 4.62 | 52,462 |
| U.S. Civil War Decoder | 0 | - | 4.14 | 25,286 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,067 |
| Flags of Asia Quiz | 0 | - | 4.99 | 614,815 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 58,052 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,114 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,384,005 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,311 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,548 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,611 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,772 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,553 |
| U.S. Senators by State | 0 | - | 4.44 | 39,981 |
| American Founding Fathers | 0 | - | 4.42 | 23,233 |
| History of Florida | 0 | - | 4.45 | 9,832 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,235 |
| History of Texas | 0 | - | 4.43 | 14,642 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,997 |
| American History Quotes #1 | 0 | - | 4.37 | 96,068 |
| American History Quotes #2 | 0 | - | 4.38 | 41,426 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,089 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,263 |
| US States Quiz | 0 | - | 5.00 | 16,897,823 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,445 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,581 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,320 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,863 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,270 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,106 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 106,127 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,051 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,629 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,419 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 136,121 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,028 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,312 |
| Monarchies of Asia | 0 | - | 4.97 | 71,154 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,957 |
| Countries of the Middle East | 0 | - | 4.96 | 201,388 |
| Flags of the Middle East | 0 | - | 4.69 | 62,665 |
| Iran Country Quiz | 0 | - | 4.49 | 60,416 |
| Iraq Country Quiz | 0 | - | 4.43 | 40,977 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,930 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 93,399 |
| Countries Bordering India | 0 | - | 4.98 | 163,471 |
| Countries that Bordered British India with an Empty Map | 0 | - | 4.69 | 55,483 |
| Countries Closest to India | 0 | - | 4.97 | 102,875 |
| Modern Day Countries of the Mughal Empire on a Map | 0 | - | 4.42 | 33,682 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 58,299 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,774 |
| Every African Country Shape | 0 | - | 4.90 | 87,496 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,696 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,355 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,709 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,032 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,765 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,687 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,478 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 332,659 |
| Pixelated United States Map | 0 | - | 4.87 | 94,372 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,835 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,892 |
| All U.S. Supreme Court Justices | 0 | - | 4.54 | 29,095 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,910 |
| All U.S. Supreme Court Justices Ever | 0 | - | 4.50 | 11,822 |
| U.S. Presidential Running Mates | 0 | - | 4.40 | 28,658 |
| The George Washington Presidency | 0 | - | 4.03 | 14,553 |
| The Thomas Jefferson Presidency | 0 | - | 4.26 | 13,740 |
| Random U.S. Vice President to President | 0 | - | 4.39 | 30,658 |
| The John Adams Presidency | 0 | - | 4.12 | 8,753 |
| Franklin... or Theodore Roosevelt | 0 | - | 4.35 | 16,940 |
| The Theodore Roosevelt Presidency | 0 | - | 4.39 | 7,747 |
| U.S. Presidents to Win the Nobel Peace Prize | 0 | - | 4.34 | 18,330 |
| U.S. Presidential Knowledge - Multiple Choice | 0 | - | 4.36 | 21,695 |
| U.S. Vice Presidential Trivia | 0 | - | 4.26 | 12,863 |
| Harvard University | 0 | - | 4.15 | 8,301 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,308 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,082 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,033 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,575 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,561 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,172 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,469 |
| U.S. States By Population | 0 | - | 4.92 | 153,654 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,592 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,526 |
| US States with an Empty Map | 0 | - | 5.00 | 625,360 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,633 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,296 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,421 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,267 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,712 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,184 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,880 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,340 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,624 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,370 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,667 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,142 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,811 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,044 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,348 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,500 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,054 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,130 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 83,433 |
| Countries Closest to Turkey | 0 | - | 4.96 | 126,174 |
| Countries Bordering Turkey | 0 | - | 4.98 | 117,258 |
| Countries Bordering Saudi Arabia | 0 | - | 4.95 | 120,872 |
| Syria Country Quiz | 0 | - | 4.81 | 32,822 |
| Countries Closest to Cyprus | 0 | - | 4.91 | 55,654 |
| Jordan Country Quiz | 0 | - | 4.86 | 31,822 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,174 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,588 |
| Countries Closest to Indonesia | 0 | - | 4.97 | 104,641 |
| Countries Closest to Vietnam | 0 | - | 4.95 | 94,062 |
| Countries Bordering Myanmar | 0 | - | 4.87 | 77,631 |
| China Cities Map Quiz | 0 | - | 4.94 | 105,342 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 93,817 |
| Countries that Border China | 0 | - | 4.96 | 263,352 |
| Japan Country Quiz | 0 | - | 4.93 | 142,626 |
| Countries that Visit Japan the Most | 0 | - | 4.93 | 77,513 |
| Most-Visited Countries by Japanese | 0 | - | 4.95 | 60,212 |
| Countries Closest to Japan | 0 | - | 4.92 | 138,734 |
| Closest Countries to North Korea | 0 | - | 4.94 | 122,493 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,245 |
| States of India Map Quiz | 0 | - | 4.83 | 26,569 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,130 |
| Hindu Countries | 0 | - | 4.86 | 50,234 |
| Africa Flags Map Quiz | 0 | - | 4.95 | 36,526 |
| Random African Flag to Country | 0 | - | 4.88 | 75,034 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,208 |
| Rivers of the United States | 0 | - | 4.93 | 66,263 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,576 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,665 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,464 |
| California A-Z | 0 | - | 4.49 | 28,799 |
| History of California | 0 | - | 4.40 | 18,763 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,959 |
| History of Georgia (U.S. State) | 0 | - | 4.30 | 13,232 |
| History of Illinois | 0 | - | 4.24 | 11,227 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,192 |
| History of Maryland | 0 | - | 4.06 | 6,696 |
| History of Massachusetts | 0 | - | 4.14 | 8,397 |
| History of Michigan | 0 | - | 4.26 | 6,950 |
| History of New York | 0 | - | 4.36 | 16,366 |
| History of New Jersey | 0 | - | 4.38 | 7,270 |
| History of Ohio | 0 | - | 4.14 | 7,352 |
| History of Tennessee | 0 | - | 4.29 | 7,667 |
| History of Washington State | 0 | - | 4.27 | 6,882 |
| People on Money - United States | 0 | - | 4.31 | 63,355 |
