| U.S. Presidents by Picture | 0 | - | 4.87 | 425,697 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 380,945 |
| Random U.S. States on a Map | 0 | - | 4.96 | 624,784 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,308 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,064 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,089 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 301,865 |
| United States Map Quiz | 0 | - | 4.98 | 4,152,336 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,622 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,335 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,732 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,096 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,257 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,302 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,107 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,010 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 330,774 |
| U.S. Cabinet Departments | 0 | - | 4.85 | 72,781 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,686,004 |
| US Presidents - One Minute Sprint | 0 | - | 4.41 | 304,542 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,654 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,676 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,037 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,785 |
| US States Quiz | 0 | - | 5.00 | 16,821,431 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,474 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,078 |
| Pixelated United States Map | 0 | - | 4.87 | 94,020 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,273 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,464 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,086 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,459 |
| U.S. Presidential Quotes | 0 | - | 4.37 | 44,458 |
| The George W. Bush Presidency | 0 | - | 4.06 | 32,161 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,106 |
| People in Pictures with Ronald Reagan | 0 | - | 4.35 | 40,606 |
| U.S. President Scramble | 0 | - | 4.40 | 116,597 |
| U.S. Presidents With Facial Hair By Picture | 0 | - | 4.48 | 23,138 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,442 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,597 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,157 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,107 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,141 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,644 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,898 |
| U.S. States By Population | 0 | - | 4.92 | 152,967 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,134 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,292 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,334 |
| US States with an Empty Map | 0 | - | 5.00 | 622,917 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,344 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,078 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,083 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,425 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,732 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,481 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,005 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,409 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,082 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,561 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,314 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,342 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,644 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,816 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,318 |
| Rivers of the United States | 0 | - | 4.93 | 66,037 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,942 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,051 |
| Stephen Curry Quiz | 0 | - | 4.37 | 66,760 |
| Hawaiian Islands | 0 | - | 4.83 | 42,626 |
| Countries Closest to Maine | 0 | - | 4.85 | 66,939 |
| LeBron James Trivia | 0 | - | 4.01 | 170,589 |
| LeBron... or Kobe? | 0 | - | 4.04 | 69,717 |
| It's Always Sunny in Philadelphia Quiz | 0 | - | 4.34 | 15,833 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,258 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,532,491 |
| U.S. State Flags | 0 | - | 4.89 | 169,547 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,209 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,333 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,234 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,769 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,195 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,421 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,336 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,755 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,811 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,987 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,705 |
| Doctor Who Actors | 0 | - | 4.61 | 17,902 |
| Sherlock Holmes Quiz | 0 | - | 4.49 | 26,627 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 218,958 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,444 |
| Territories of the United States | 0 | - | 4.79 | 52,311 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,545 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,560 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,188 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,154 |
| United States Country Quiz | 0 | - | 4.43 | 101,259 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,054 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,808 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,819 |
| U.S. Highway Signs By State | 0 | - | 4.46 | 15,462 |
| Presidential Actors | 0 | - | 4.36 | 19,142 |
| The Bill Clinton Presidency | 0 | - | 4.24 | 31,424 |
| The George H. W. Bush Presidency | 0 | - | 4.36 | 21,472 |
| The Ronald Reagan Presidency | 0 | - | 4.26 | 24,795 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 21,993 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,217 |
| The Barack Obama Presidency | 0 | - | 4.16 | 25,357 |
| American Revolution Decoder | 0 | - | 4.10 | 20,928 |
| New York City Geography | 0 | - | 4.42 | 33,046 |
| Cleveland Browns QBs Since 1999 | 0 | - | 4.31 | 7,769 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,388,450 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,859 |
| US States by Borders in 30 Seconds | 0 | - | 4.67 | 2,675,931 |
| Europe Map Quiz | 0 | - | 5.00 | 4,753,457 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,518 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,875 |
| Vietnam War Countries | 0 | - | 4.83 | 94,028 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,659 |
| Countries of Africa | 0 | - | 5.00 | 2,528,359 |
| Flags of Africa Quiz | 0 | - | 5.00 | 468,732 |
| Africa Map Quiz | 0 | - | 5.00 | 2,113,898 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,516 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,769 |
| African East Coast | 0 | - | 4.96 | 95,744 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,560 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,121 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,416 |
| Australian Capitals | 0 | - | 4.92 | 62,688 |
| Australia Map Quiz | 0 | - | 4.95 | 343,702 |
| Flags of North and South America | 0 | - | 4.99 | 371,546 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,164 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,646 |
| South America Map Quiz | 0 | - | 5.00 | 1,546,785 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,019,859 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,414 |
| Top U.S. Universities | 0 | - | 4.15 | 144,780 |
| Largest United States Airlines | 0 | - | 4.39 | 54,974 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 746,025 |
| Most Populous Native American Tribes | 0 | - | 4.28 | 12,433 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,243 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,694 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 41,932 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,596 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,770 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,563 |
| Rust Belt Cities Map Quiz | 0 | - | 4.57 | 35,027 |
| Arms Exports - United States | 0 | - | 4.75 | 62,224 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,951 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,914 |
| U.S. States by Governor | 0 | - | 4.43 | 18,034 |
| U.S. Bill of Rights | 0 | - | 4.53 | 32,499 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,661 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,405 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,193 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,641 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 624,763 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,490 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,186 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,523 |
| Presidential Middle Names | 0 | - | 4.41 | 60,072 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,150 |
| US Presidents Breakdown Puzzle #1 | 0 | - | 3.69 | 20,023 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,405 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,341 |
| George Bush... or George Bush | 0 | - | 3.98 | 8,198 |
| State Quiz - Alaska | 0 | - | 4.42 | 41,969 |
| State Quiz - Arizona | 0 | - | 4.44 | 36,646 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,864 |
| State Quiz - California | 0 | - | 4.68 | 64,278 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,805 |
| State Quiz - Florida | 0 | - | 4.47 | 62,212 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,808 |
| Countries that Visit Florida the Most | 0 | - | 4.70 | 72,067 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,820 |
| State Quiz - Georgia | 0 | - | 4.48 | 35,489 |
| Georgia Counties | 0 | - | 4.50 | 49,374 |
| Countries Closest to Hawaii | 0 | - | 4.54 | 53,529 |
| State Quiz - Illinois | 0 | - | 4.44 | 33,314 |
| State Quiz - Kentucky | 0 | - | 4.41 | 32,399 |
| Players With TD Receptions From Tom Brady | 0 | - | 4.18 | 13,487 |
| Tom Brady Quiz | 0 | - | 4.15 | 15,621 |
| State Quiz - Minnesota | 0 | - | 4.41 | 38,730 |
| New York Cities Map Quiz | 0 | - | 4.54 | 42,185 |
| State Quiz - New York | 0 | - | 4.52 | 46,003 |
| New York Counties | 0 | - | 4.65 | 50,389 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,286 |
| State Quiz - New Jersey | 0 | - | 4.42 | 38,074 |
| State Quiz - Texas | 0 | - | 4.43 | 62,771 |
| Texas Counties | 0 | - | 4.55 | 76,584 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,262 |
| North Carolina Counties | 0 | - | 4.54 | 53,085 |
| Ohio Counties | 0 | - | 4.47 | 45,714 |
| Pennsylvania Counties | 0 | - | 4.49 | 52,560 |
| State Quiz - Pennsylvania | 0 | - | 4.50 | 48,907 |
| State Quiz - Tennessee | 0 | - | 4.54 | 34,097 |
| State Quiz - Virginia | 0 | - | 4.52 | 40,222 |
| Virginia Counties | 0 | - | 4.45 | 33,162 |
| State Quiz - Washington | 0 | - | 4.45 | 36,345 |
