| U.S. Presidents Quiz | 0 | - | 5.00 | 3,729,418 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,926 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,802 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,069 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 89,032 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,091 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,139 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 193,949 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,157 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,921 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,360 |
| Vietnam War Countries | 0 | - | 4.82 | 94,721 |
| U.S. Geography by Letter - B | 0 | - | 4.54 | 70,119 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 58,433 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,956 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,612 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,246 |
| United States Map Quiz | 0 | - | 4.98 | 4,172,921 |
| Hawaiian Islands | 0 | - | 4.83 | 42,992 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,582 |
| India A-Z | 0 | - | 4.42 | 34,321 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,666 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,715 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,668 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 50,443 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 54,592 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,763 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,703 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,847 |
| U.S. Geography by Letter - R | 0 | - | 4.22 | 37,055 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,780 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 114,025 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,571 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,630 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,429 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,727 |
| Presidential Middle Names | 0 | - | 4.42 | 60,788 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,728 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,926 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,238 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,647 |
| The American Revolution | 0 | - | 4.52 | 54,378 |
| California Cities A-Z | 0 | - | 4.07 | 17,467 |
| California A-Z | 0 | - | 4.49 | 28,853 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 47,238 |
| Texas A-Z | 0 | - | 4.19 | 16,443 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,317 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,720 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,225 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,608 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,245 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,750 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,266 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,874 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,152 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,760 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,545 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,516 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,122 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,706 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,261 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,700 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,361 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,366 |
| Countries that Start with A | 0 | - | 4.98 | 2,177,652 |
| Countries that Start with B | 0 | - | 4.95 | 2,308,286 |
| Countries that Start with C | 0 | - | 4.96 | 1,832,877 |
| Countries that Start with D | 0 | - | 4.96 | 717,395 |
| Countries that Start with E | 0 | - | 4.95 | 1,386,194 |
| Countries that Start with G | 0 | - | 4.97 | 1,512,735 |
| Countries that Start with H | 0 | - | 4.96 | 610,249 |
| Countries that Start with I | 0 | - | 4.92 | 1,295,461 |
| Countries that Start with J | 0 | - | 4.98 | 607,648 |
| Countries that Start with K | 0 | - | 4.97 | 821,469 |
| Countries that Start with L | 0 | - | 4.98 | 1,097,731 |
| Countries that Start with N | 0 | - | 4.93 | 1,124,783 |
| Countries that Start with P | 0 | - | 4.94 | 1,222,937 |
| Countries that Start with S | 0 | - | 4.98 | 1,764,383 |
| Countries that Start with T | 0 | - | 4.90 | 1,015,602 |
| Countries that Start with U | 0 | - | 4.97 | 909,006 |
| Countries that Start with V | 0 | - | 4.98 | 612,405 |
| Countries that Start with F | 0 | - | 4.83 | 621,812 |
| Countries that Start with M | 0 | - | 4.97 | 1,389,236 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,918 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,938 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,561 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 750,159 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,512 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 76,030 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,680 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,866 |
| U.S. Senators by State | 0 | - | 4.44 | 40,126 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,637 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 75,140 |
| Harvard University | 0 | - | 4.15 | 8,334 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,078 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,792 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,310 |
| US States Quiz | 0 | - | 5.00 | 17,014,009 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,816 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,012 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,904 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,856 |
| Monarchies of Europe | 0 | - | 4.90 | 98,992 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,167 |
| Russia A-Z | 0 | - | 4.46 | 27,324 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,411 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,796 |
| Monarchies of Asia | 0 | - | 4.97 | 71,578 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,328 |
| Japan A-Z | 0 | - | 4.40 | 42,445 |
| Richest Countries A-Z | 0 | - | 4.91 | 104,181 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,903 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 95,578 |
| U.S. Geography by Letter - N | 0 | - | 3.80 | 53,185 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 49,220 |
| U.S. Geography by Letter - F | 0 | - | 3.85 | 45,498 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 41,972 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,424 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 336,009 |
| Pixelated United States Map | 0 | - | 4.89 | 94,893 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,677 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,538 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 147,345 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,826 |
| U.S. Vice Presidents | 0 | - | 4.39 | 137,125 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,377 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,792 |
| First Ladies of the United States | 0 | - | 4.28 | 86,013 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,329 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,516 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,382 |
| People in Pictures with Barack Obama | 0 | - | 4.10 | 48,107 |
| State Quiz - Arizona | 0 | - | 4.44 | 36,997 |
| California Cities Map Quiz | 0 | - | 4.50 | 88,221 |
| State Quiz - California | 0 | - | 4.69 | 64,906 |
| Golden State Warriors Trivia | 0 | - | 4.25 | 25,061 |
| State Quiz - Florida | 0 | - | 4.47 | 62,711 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 61,028 |
| Countries that Visit Florida the Most | 0 | - | 4.70 | 72,823 |
| Top 10 Boston Celtics Players | 0 | - | 4.05 | 23,981 |
| Boston Celtics Trivia | 0 | - | 4.12 | 15,204 |
| New York Cities Map Quiz | 0 | - | 4.55 | 42,389 |
| State Quiz - New York | 0 | - | 4.52 | 46,515 |
| New Jersey Counties | 0 | - | 4.57 | 30,684 |
| State Quiz - Texas | 0 | - | 4.43 | 63,267 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,633 |
| U.S. History A-Z #1 | 0 | - | 4.36 | 30,558 |
| The American Civil War | 0 | - | 4.62 | 52,646 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 119,145 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 510,691 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,381 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,417 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,461 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,502 |
| U.S. States By Population | 0 | - | 4.92 | 154,216 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,334 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,950 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,416 |
| US States with an Empty Map | 0 | - | 5.00 | 629,326 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 83,146 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,578 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,173 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 161,139 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,297 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,741 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,859 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,702 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 65,041 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.74 | 64,083 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,554 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 83,082 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,838 |
| Merged U.S. States | 0 | - | 4.37 | 44,446 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,959 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,375 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,627 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,330 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,101 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,685 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,327 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,710 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,683 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,984 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 97,329 |
| European Geography A-Z | 0 | - | 4.29 | 49,509 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 134,529 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,412 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 99,162 |
| Name the English Monarchs | 0 | - | 4.91 | 507,126 |
| British History A-Z #1 | 0 | - | 4.45 | 47,301 |
| Asian Geography By Letter - S | 0 | - | 4.17 | 56,268 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 52,216 |
| Asian Geography by Letter - G | 0 | - | 4.36 | 51,446 |
| Asian Geography by Letter - I | 0 | - | 4.37 | 68,097 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 65,057 |
| Asian Geography by Letter - N | 0 | - | 4.34 | 50,486 |
| Asian Geography By Letter - J | 0 | - | 4.27 | 34,978 |
| The Iraq War | 0 | - | 4.47 | 15,712 |
| One Country By Letter By Continent | 0 | - | 5.00 | 125,865 |
