| U.S. Presidents Quiz | 0 | - | 5.00 | 3,652,132 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,591 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,270 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,375 |
| US States Quiz | 0 | - | 5.00 | 16,692,013 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,299 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,182 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,973 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,505 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,747 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,192 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,968 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,200 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,676 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,310 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,363 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,597 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,861 |
| U.S. States By Population | 0 | - | 4.92 | 152,320 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,347 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,830 |
| US States with an Empty Map | 0 | - | 5.00 | 618,529 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,740 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,851 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,523 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,071 |
| U.S. Senators by State | 0 | - | 4.44 | 39,742 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,588 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,531 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,645 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,872 |
| Vietnam War Countries | 0 | - | 4.83 | 93,580 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,977 |
| Hawaiian Islands | 0 | - | 4.83 | 42,421 |
| Harvard University | 0 | - | 4.15 | 8,259 |
| Six Flags Over Texas | 0 | - | 4.79 | 62,998 |
| U.S. State Flags | 0 | - | 4.89 | 166,935 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,328 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,588 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,525 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,830 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,611 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,002 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,529 |
| India A-Z | 0 | - | 4.42 | 33,911 |
| U.S. Geography by Letter - C | 0 | - | 4.26 | 73,333 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,303 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,299 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 48,985 |
| U.S. Geography by Letter - P | 0 | - | 4.34 | 47,373 |
| U.S. Geography by Letter - M | 0 | - | 4.13 | 52,586 |
| U.S. Geography by Letter - L | 0 | - | 4.03 | 40,343 |
| U.S. Geography by Letter - G | 0 | - | 4.12 | 38,590 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,317 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,367 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,865 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,911 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,432 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,972 |
| Presidential Middle Names | 0 | - | 4.41 | 59,678 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,705 |
| Assassinated U.S. Presidents | 0 | - | 4.61 | 93,788 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,155 |
| California Cities A-Z | 0 | - | 4.06 | 16,987 |
| California A-Z | 0 | - | 4.49 | 28,702 |
| Georgia Counties | 0 | - | 4.50 | 49,068 |
| Texas A-Z | 0 | - | 4.18 | 16,306 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,517,607 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,397 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,419 |
| Random U.S. States on a Map | 0 | - | 4.96 | 621,172 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,002 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,215 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,925 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,826 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,714 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,726 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,372 |
| The American Revolution | 0 | - | 4.52 | 54,046 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,482 |
| History of Florida | 0 | - | 4.45 | 9,761 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,202 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,026 |
| History of Texas | 0 | - | 4.43 | 14,551 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,466 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,657 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,349 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,853 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,782 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,660 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,183 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,831 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,638 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,601 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,004 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,272 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,571 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,180 |
| Monarchies of Europe | 0 | - | 4.90 | 97,275 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,195 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,815 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,377 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,147 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,552 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,056 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,695 |
| Monarchies of Asia | 0 | - | 4.97 | 70,577 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,416 |
| Countries that Start with A | 0 | - | 4.97 | 2,145,932 |
| Countries that Start with B | 0 | - | 4.95 | 2,279,109 |
| Countries that Start with C | 0 | - | 4.96 | 1,809,705 |
| Countries that Start with D | 0 | - | 4.96 | 701,125 |
| Countries that Start with E | 0 | - | 4.95 | 1,367,005 |
| Countries that Start with G | 0 | - | 4.97 | 1,492,232 |
| Countries that Start with H | 0 | - | 4.96 | 597,587 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,870 |
| Countries that Start with J | 0 | - | 4.98 | 595,658 |
| Countries that Start with K | 0 | - | 4.96 | 809,079 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,497 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,359 |
| Countries that Start with P | 0 | - | 4.94 | 1,208,196 |
| Countries that Start with S | 0 | - | 4.98 | 1,744,006 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,925 |
| Countries that Start with U | 0 | - | 4.97 | 899,705 |
| Countries that Start with V | 0 | - | 4.98 | 604,873 |
| Countries that Start with F | 0 | - | 4.83 | 611,898 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,897 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,078 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,072 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,047 |
| U.S. Geography by Letter - N | 0 | - | 3.79 | 52,143 |
| U.S. Geography by Letter - E | 0 | - | 3.73 | 48,184 |
| U.S. Geography by Letter - F | 0 | - | 3.86 | 44,439 |
| U.S. Geography by Letter - O | 0 | - | 3.43 | 33,789 |
| U.S. Geography by Letter - R | 0 | - | 4.15 | 30,257 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,727 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,009 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,612 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,102 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,656 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,785 |
| Pixelated United States Map | 0 | - | 4.89 | 93,433 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,405 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,809 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,161 |
| First Ladies of the United States | 0 | - | 4.28 | 85,225 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,107 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,235 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,995 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,628 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,617 |
| New York Cities Map Quiz | 0 | - | 4.54 | 42,032 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,598 |
| New England States | 0 | - | 4.51 | 59,704 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,648 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,379,621 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,388 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,468 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,880 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,270 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,020 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,297 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,873 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,663,794 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,616 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,654 |
| U.S. States by Borders | 0 | - | 4.63 | 35,058 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,124 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,223 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,115 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,563 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,366 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,837 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,059 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,451 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,051 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,645 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,678 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,168 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,414 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,859 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,235 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,453 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,127 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,898 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,278 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,488 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,207 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,084 |
| European Geography A-Z | 0 | - | 4.28 | 48,983 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,411 |
| Russia A-Z | 0 | - | 4.46 | 27,133 |
| Name the English Monarchs | 0 | - | 4.92 | 497,704 |
| Asian Geography By Letter - S | 0 | - | 4.18 | 55,908 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 51,678 |
| Asian Geography by Letter - G | 0 | - | 4.35 | 50,980 |
| Asian Geography by Letter - I | 0 | - | 4.36 | 67,498 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 64,486 |
| Asian Geography by Letter - N | 0 | - | 4.33 | 49,994 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,478 |
