| U.S. Presidents Quiz | 0 | - | 5.00 | 3,650,090 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,578 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,218 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,340 |
| US States Quiz | 0 | - | 5.00 | 16,684,630 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,278 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,145 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,942 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,492 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,664 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,129 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,959 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,158 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,623 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,268 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,320 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,542 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,808 |
| U.S. States By Population | 0 | - | 4.92 | 152,289 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,297 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,798 |
| US States with an Empty Map | 0 | - | 5.00 | 618,322 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,726 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,807 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,511 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,060 |
| U.S. Senators by State | 0 | - | 4.44 | 39,736 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,373 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,485 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,586 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,822 |
| Vietnam War Countries | 0 | - | 4.83 | 93,548 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,189 |
| Hawaiian Islands | 0 | - | 4.83 | 42,412 |
| Harvard University | 0 | - | 4.15 | 8,258 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,981 |
| U.S. State Flags | 0 | - | 4.89 | 166,800 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,228 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,508 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,493 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,798 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,574 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 90,966 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,518 |
| India A-Z | 0 | - | 4.42 | 33,905 |
| U.S. Geography by Letter - C | 0 | - | 4.26 | 73,319 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,279 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,283 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 48,969 |
| U.S. Geography by Letter - P | 0 | - | 4.34 | 47,361 |
| U.S. Geography by Letter - M | 0 | - | 4.13 | 52,576 |
| U.S. Geography by Letter - L | 0 | - | 4.03 | 40,328 |
| U.S. Geography by Letter - G | 0 | - | 4.12 | 38,576 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,300 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,349 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,785 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,874 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,389 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,933 |
| Presidential Middle Names | 0 | - | 4.41 | 59,647 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,684 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,763 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,148 |
| California Cities A-Z | 0 | - | 4.06 | 16,975 |
| California A-Z | 0 | - | 4.49 | 28,700 |
| Georgia Counties | 0 | - | 4.50 | 49,040 |
| Texas A-Z | 0 | - | 4.18 | 16,300 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,516,842 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,079 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,330 |
| Random U.S. States on a Map | 0 | - | 4.96 | 620,962 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 87,954 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,211 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,884 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,793 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,699 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,715 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,336 |
| The American Revolution | 0 | - | 4.52 | 54,040 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,466 |
| History of Florida | 0 | - | 4.45 | 9,758 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,193 |
| 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 | 39,447 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,637 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,328 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,838 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,774 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,645 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,168 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,797 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,629 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,592 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,994 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,253 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,559 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,139 |
| Monarchies of Europe | 0 | - | 4.90 | 97,239 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,173 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,783 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,355 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,119 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,530 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,027 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,665 |
| Monarchies of Asia | 0 | - | 4.97 | 70,550 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,395 |
| Countries that Start with A | 0 | - | 4.97 | 2,145,250 |
| Countries that Start with B | 0 | - | 4.95 | 2,278,504 |
| Countries that Start with C | 0 | - | 4.96 | 1,809,195 |
| Countries that Start with D | 0 | - | 4.96 | 700,781 |
| Countries that Start with E | 0 | - | 4.95 | 1,366,619 |
| Countries that Start with G | 0 | - | 4.97 | 1,491,828 |
| Countries that Start with H | 0 | - | 4.96 | 597,299 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,500 |
| Countries that Start with J | 0 | - | 4.98 | 595,372 |
| Countries that Start with K | 0 | - | 4.96 | 808,819 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,210 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,061 |
| Countries that Start with P | 0 | - | 4.94 | 1,207,888 |
| Countries that Start with S | 0 | - | 4.98 | 1,743,557 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,656 |
| Countries that Start with U | 0 | - | 4.97 | 899,511 |
| Countries that Start with V | 0 | - | 4.98 | 604,695 |
| Countries that Start with F | 0 | - | 4.83 | 611,662 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,562 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,057 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,054 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,021 |
| U.S. Geography by Letter - N | 0 | - | 3.79 | 52,116 |
| U.S. Geography by Letter - E | 0 | - | 3.73 | 48,173 |
| U.S. Geography by Letter - F | 0 | - | 3.86 | 44,429 |
| U.S. Geography by Letter - O | 0 | - | 3.43 | 33,779 |
| U.S. Geography by Letter - R | 0 | - | 4.15 | 30,247 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,418 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 742,860 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,568 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,070 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,092 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,667 |
| Pixelated United States Map | 0 | - | 4.89 | 93,390 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,339 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,758 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,156 |
| First Ladies of the United States | 0 | - | 4.28 | 85,211 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,101 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,201 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,989 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,620 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,610 |
| New York Cities Map Quiz | 0 | - | 4.54 | 42,030 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,561 |
| New England States | 0 | - | 4.51 | 59,700 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,631 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,379,260 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,364 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,441 |
| 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 | 65,261 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,016 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,276 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,853 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,663,127 |
| 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 | 40,643 |
| U.S. States by Borders | 0 | - | 4.63 | 35,051 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,075 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,216 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,098 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,551 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,344 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,802 |
| 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 | 124,421 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,040 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,627 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,673 |
| 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 | 61,890 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,271 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,480 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,183 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,052 |
| European Geography A-Z | 0 | - | 4.28 | 48,969 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,294 |
| Russia A-Z | 0 | - | 4.46 | 27,129 |
| Name the English Monarchs | 0 | - | 4.92 | 497,528 |
| Asian Geography By Letter - S | 0 | - | 4.18 | 55,893 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 51,652 |
| Asian Geography by Letter - G | 0 | - | 4.35 | 50,958 |
| Asian Geography by Letter - I | 0 | - | 4.36 | 67,474 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 64,455 |
| Asian Geography by Letter - N | 0 | - | 4.33 | 49,967 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,460 |
