| U.S. Presidents Quiz | 0 | - | 5.00 | 3,650,379 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,582 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,228 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,343 |
| US States Quiz | 0 | - | 5.00 | 16,686,164 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,283 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,156 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,946 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,496 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,676 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,139 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,960 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,163 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,627 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,276 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,324 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,550 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,818 |
| U.S. States By Population | 0 | - | 4.92 | 152,292 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,307 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,800 |
| US States with an Empty Map | 0 | - | 5.00 | 618,360 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,728 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,815 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,513 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,062 |
| U.S. Senators by State | 0 | - | 4.44 | 39,737 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,399 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,489 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,599 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,830 |
| Vietnam War Countries | 0 | - | 4.83 | 93,557 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,306 |
| Hawaiian Islands | 0 | - | 4.83 | 42,413 |
| Harvard University | 0 | - | 4.15 | 8,258 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,982 |
| U.S. State Flags | 0 | - | 4.89 | 166,828 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,243 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,515 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,497 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,803 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,580 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 90,969 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,519 |
| India A-Z | 0 | - | 4.42 | 33,907 |
| U.S. Geography by Letter - C | 0 | - | 4.26 | 73,321 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,284 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,285 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 48,972 |
| U.S. Geography by Letter - P | 0 | - | 4.34 | 47,364 |
| U.S. Geography by Letter - M | 0 | - | 4.13 | 52,576 |
| U.S. Geography by Letter - L | 0 | - | 4.03 | 40,330 |
| U.S. Geography by Letter - G | 0 | - | 4.12 | 38,579 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,304 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,352 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,804 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,879 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,393 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,938 |
| Presidential Middle Names | 0 | - | 4.41 | 59,655 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,686 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,766 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,149 |
| California Cities A-Z | 0 | - | 4.06 | 16,976 |
| California A-Z | 0 | - | 4.49 | 28,700 |
| Georgia Counties | 0 | - | 4.50 | 49,041 |
| Texas A-Z | 0 | - | 4.18 | 16,301 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,516,910 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,125 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,339 |
| Random U.S. States on a Map | 0 | - | 4.96 | 621,008 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 87,965 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,212 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,891 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,801 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,702 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,717 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,342 |
| The American Revolution | 0 | - | 4.52 | 54,040 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,469 |
| History of Florida | 0 | - | 4.45 | 9,759 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,197 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 72,997 |
| History of Texas | 0 | - | 4.43 | 14,547 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,452 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,642 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,332 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,839 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,775 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,646 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,169 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,805 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,631 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,594 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,997 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,258 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,562 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,149 |
| Monarchies of Europe | 0 | - | 4.90 | 97,244 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,179 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,791 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,361 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,126 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,536 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,033 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,671 |
| Monarchies of Asia | 0 | - | 4.97 | 70,556 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,399 |
| Countries that Start with A | 0 | - | 4.97 | 2,145,409 |
| Countries that Start with B | 0 | - | 4.95 | 2,278,623 |
| Countries that Start with C | 0 | - | 4.96 | 1,809,294 |
| Countries that Start with D | 0 | - | 4.96 | 700,845 |
| Countries that Start with E | 0 | - | 4.95 | 1,366,702 |
| Countries that Start with G | 0 | - | 4.97 | 1,491,928 |
| Countries that Start with H | 0 | - | 4.96 | 597,366 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,581 |
| Countries that Start with J | 0 | - | 4.98 | 595,435 |
| Countries that Start with K | 0 | - | 4.96 | 808,883 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,268 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,119 |
| Countries that Start with P | 0 | - | 4.94 | 1,207,951 |
| Countries that Start with S | 0 | - | 4.98 | 1,743,657 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,703 |
| Countries that Start with U | 0 | - | 4.97 | 899,554 |
| Countries that Start with V | 0 | - | 4.98 | 604,735 |
| Countries that Start with F | 0 | - | 4.83 | 611,711 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,623 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,060 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,055 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,027 |
| U.S. Geography by Letter - N | 0 | - | 3.79 | 52,120 |
| U.S. Geography by Letter - E | 0 | - | 3.73 | 48,174 |
| U.S. Geography by Letter - F | 0 | - | 3.86 | 44,429 |
| U.S. Geography by Letter - O | 0 | - | 3.43 | 33,781 |
| U.S. Geography by Letter - R | 0 | - | 4.15 | 30,249 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,458 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 742,887 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,578 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,075 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,219 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,685 |
| Pixelated United States Map | 0 | - | 4.89 | 93,399 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,350 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,772 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,158 |
| First Ladies of the United States | 0 | - | 4.28 | 85,212 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,102 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,209 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,991 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,621 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,612 |
| New York Cities Map Quiz | 0 | - | 4.54 | 42,031 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,564 |
| New England States | 0 | - | 4.51 | 59,701 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,632 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,379,291 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,367 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,445 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,878 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,263 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,017 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,284 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,855 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,663,247 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,601 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,644 |
| U.S. States by Borders | 0 | - | 4.63 | 35,052 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,086 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,217 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,102 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,554 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,345 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,806 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,045 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,422 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,041 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,628 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,675 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,160 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,404 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,846 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,223 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,440 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,116 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,893 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,273 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,482 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,189 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,060 |
| European Geography A-Z | 0 | - | 4.28 | 48,972 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,319 |
| Russia A-Z | 0 | - | 4.46 | 27,129 |
| Name the English Monarchs | 0 | - | 4.92 | 497,567 |
| Asian Geography By Letter - S | 0 | - | 4.18 | 55,897 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 51,659 |
| Asian Geography by Letter - G | 0 | - | 4.35 | 50,960 |
| Asian Geography by Letter - I | 0 | - | 4.36 | 67,478 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 64,461 |
| Asian Geography by Letter - N | 0 | - | 4.33 | 49,973 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,463 |
