| U.S. Presidents Quiz | 0 | - | 5.00 | 3,720,741 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,234 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,673 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,591 |
| US States Quiz | 0 | - | 5.00 | 16,971,188 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,606 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,361 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,903 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,062 |
| Name a Valid U.S. President #1 | 0 | - | 4.90 | 193,503 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,390 |
| Las Vegas Casinos | 0 | - | 4.13 | 38,130 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,622 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,903 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 112,129 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,129 |
| U.S. States with Short Names | 0 | - | 4.91 | 150,179 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,158 |
| U.S. States By Population | 0 | - | 4.92 | 154,034 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,078 |
| U.S. States with Longest Names | 0 | - | 4.85 | 44,804 |
| US States with an Empty Map | 0 | - | 5.00 | 627,806 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,772 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,482 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 66,003 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,845 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,278 |
| U.S. Senators by State | 0 | - | 4.44 | 40,082 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,401 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,167 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,867 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,985 |
| Vietnam War Countries | 0 | - | 4.82 | 94,529 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,789 |
| Hawaiian Islands | 0 | - | 4.83 | 42,892 |
| Harvard University | 0 | - | 4.15 | 8,320 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,567 |
| U.S. State Flags | 0 | - | 4.89 | 172,356 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,346 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,301 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 50,002 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,741 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,356 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,701 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,165 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,442 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,472 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,449 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 50,165 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 54,345 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,586 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,476 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,640 |
| U.S. Geography by Letter - R | 0 | - | 4.22 | 36,783 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,540 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,938 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 109,255 |
| U.S. Presidents by Event | 0 | - | 4.58 | 35,179 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.62 | 94,519 |
| Presidential Middle Names | 0 | - | 4.41 | 60,654 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,595 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,854 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,598 |
| California Cities A-Z | 0 | - | 4.06 | 17,412 |
| California A-Z | 0 | - | 4.49 | 28,835 |
| Georgia Counties | 0 | - | 4.52 | 49,913 |
| Texas A-Z | 0 | - | 4.19 | 16,425 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,553,171 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,160 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,372 |
| Random U.S. States on a Map | 0 | - | 4.96 | 629,502 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 14,086 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,585 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,382 |
| India A-Z | 0 | - | 4.42 | 34,265 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,803 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,850 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,461 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 35,170 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 70,496 |
| The American Revolution | 0 | - | 4.52 | 54,335 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 47,146 |
| History of Florida | 0 | - | 4.45 | 9,867 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,548 |
| Cities and Towns of Massachusetts | 0 | - | 4.93 | 74,860 |
| History of Texas | 0 | - | 4.43 | 14,679 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,204 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,561 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,723 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,098 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,207 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,107 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,758 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,115 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,878 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,396 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,612 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,322 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,228 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,659 |
| Monarchies of Europe | 0 | - | 4.90 | 98,715 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,297 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,387 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,987 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,605 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,128 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,593 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,254 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,216 |
| Monarchies of Asia | 0 | - | 4.97 | 71,427 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,215 |
| Countries that Start with A | 0 | - | 4.98 | 2,172,993 |
| Countries that Start with B | 0 | - | 4.95 | 2,303,996 |
| Countries that Start with C | 0 | - | 4.96 | 1,829,546 |
| Countries that Start with D | 0 | - | 4.96 | 715,027 |
| Countries that Start with E | 0 | - | 4.95 | 1,383,469 |
| Countries that Start with G | 0 | - | 4.97 | 1,509,813 |
| Countries that Start with H | 0 | - | 4.96 | 608,596 |
| Countries that Start with I | 0 | - | 4.92 | 1,293,297 |
| Countries that Start with J | 0 | - | 4.98 | 606,037 |
| Countries that Start with K | 0 | - | 4.97 | 819,770 |
| Countries that Start with L | 0 | - | 4.98 | 1,095,546 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,579 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,849 |
| Countries that Start with S | 0 | - | 4.98 | 1,761,443 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,926 |
| Countries that Start with U | 0 | - | 4.97 | 907,728 |
| Countries that Start with V | 0 | - | 4.98 | 611,453 |
| Countries that Start with F | 0 | - | 4.83 | 620,546 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,931 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,722 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.94 | 92,504 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,706 |
| U.S. Geography by Letter - N | 0 | - | 3.80 | 53,036 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 49,044 |
| U.S. Geography by Letter - F | 0 | - | 3.84 | 45,312 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 41,774 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,388 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 749,195 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,226 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,365 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,987 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,835 |
| Pixelated United States Map | 0 | - | 4.88 | 94,712 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,364 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,316 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 634,267 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,848 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,347 |
| U.S. Presidential Running Mates | 0 | - | 4.41 | 28,742 |
| First Ladies of the United States | 0 | - | 4.28 | 85,904 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,293 |
| U.S. Presidents in Order by First Letter | 0 | - | 4.32 | 77,411 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,335 |
| California Cities Map Quiz | 0 | - | 4.50 | 88,141 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,982 |
| New York Cities Map Quiz | 0 | - | 4.55 | 42,337 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,632 |
| New England States | 0 | - | 4.51 | 59,882 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,097 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,397,297 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.64 | 66,038 |
| U.S. States by Land Area | 0 | - | 4.55 | 53,016 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,101 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,599 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,310 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 83,067 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,978 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,690,863 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,243 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.75 | 41,102 |
| U.S. States by Borders | 0 | - | 4.62 | 35,444 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 235,098 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,657 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,286 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,909 |
| Longest U.S. State Borders | 0 | - | 4.69 | 40,070 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,556 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,118 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,598 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,780 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,593 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,927 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,829 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,139 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,935 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,639 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,329 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,965 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,381 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,434 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,719 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,697 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,648 |
| European Geography A-Z | 0 | - | 4.29 | 49,447 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,309 |
| Russia A-Z | 0 | - | 4.46 | 27,301 |
| Name the English Monarchs | 0 | - | 4.91 | 505,691 |
| Asian Geography By Letter - S | 0 | - | 4.17 | 56,206 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 52,117 |
