| U.S. Presidents Quiz | 0 | - | 5.00 | 3,652,970 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,595 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,293 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,393 |
| US States Quiz | 0 | - | 5.00 | 16,695,723 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,316 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,213 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,986 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,508 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 189,789 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,220 |
| Las Vegas Casinos | 0 | - | 4.12 | 37,969 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,220 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,699 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,332 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,377 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,626 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,873 |
| U.S. States By Population | 0 | - | 4.92 | 152,331 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,373 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,842 |
| US States with an Empty Map | 0 | - | 5.00 | 618,646 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,753 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,865 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,528 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,072 |
| U.S. Senators by State | 0 | - | 4.45 | 39,744 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,682 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,549 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,678 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,895 |
| Vietnam War Countries | 0 | - | 4.83 | 93,586 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,322 |
| Hawaiian Islands | 0 | - | 4.83 | 42,424 |
| Harvard University | 0 | - | 4.15 | 8,260 |
| Six Flags Over Texas | 0 | - | 4.79 | 63,003 |
| U.S. State Flags | 0 | - | 4.89 | 166,994 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,359 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,628 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,547 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,842 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,632 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,023 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,536 |
| India A-Z | 0 | - | 4.42 | 33,918 |
| U.S. Geography by Letter - C | 0 | - | 4.26 | 73,339 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,310 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,304 |
| U.S. Geography by Letter - T | 0 | - | 4.27 | 48,989 |
| U.S. Geography by Letter - P | 0 | - | 4.34 | 47,378 |
| U.S. Geography by Letter - M | 0 | - | 4.13 | 52,589 |
| U.S. Geography by Letter - L | 0 | - | 4.03 | 40,351 |
| U.S. Geography by Letter - G | 0 | - | 4.12 | 38,593 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,325 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,371 |
| U.S. Vice Presidents | 0 | - | 4.41 | 134,890 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 107,923 |
| U.S. Presidents by Event | 0 | - | 4.58 | 33,454 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 92,991 |
| Presidential Middle Names | 0 | - | 4.41 | 59,688 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 52,718 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 93,800 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,161 |
| California Cities A-Z | 0 | - | 4.06 | 16,990 |
| California A-Z | 0 | - | 4.49 | 28,703 |
| Georgia Counties | 0 | - | 4.50 | 49,081 |
| Texas A-Z | 0 | - | 4.18 | 16,306 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,517,923 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,476 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,454 |
| Random U.S. States on a Map | 0 | - | 4.96 | 621,240 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,012 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,216 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,937 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,849 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,721 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,733 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,383 |
| The American Revolution | 0 | - | 4.52 | 54,049 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,488 |
| History of Florida | 0 | - | 4.45 | 9,763 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,204 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,041 |
| History of Texas | 0 | - | 4.43 | 14,551 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,475 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,668 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,371 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,876 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,811 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,684 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,199 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,858 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,654 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,614 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,011 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,288 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,580 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,195 |
| Monarchies of Europe | 0 | - | 4.90 | 97,293 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,208 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,821 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,383 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,154 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,557 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,064 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,702 |
| Monarchies of Asia | 0 | - | 4.97 | 70,589 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,425 |
| Countries that Start with A | 0 | - | 4.97 | 2,146,309 |
| Countries that Start with B | 0 | - | 4.95 | 2,279,424 |
| Countries that Start with C | 0 | - | 4.96 | 1,809,945 |
| Countries that Start with D | 0 | - | 4.96 | 701,290 |
| Countries that Start with E | 0 | - | 4.95 | 1,367,236 |
| Countries that Start with G | 0 | - | 4.97 | 1,492,477 |
| Countries that Start with H | 0 | - | 4.96 | 597,744 |
| Countries that Start with I | 0 | - | 4.92 | 1,280,055 |
| Countries that Start with J | 0 | - | 4.98 | 595,823 |
| Countries that Start with K | 0 | - | 4.97 | 809,228 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,656 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,519 |
| Countries that Start with P | 0 | - | 4.94 | 1,208,340 |
| Countries that Start with S | 0 | - | 4.98 | 1,744,208 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,045 |
| Countries that Start with U | 0 | - | 4.97 | 899,801 |
| Countries that Start with V | 0 | - | 4.98 | 604,968 |
| Countries that Start with F | 0 | - | 4.83 | 612,029 |
| Countries that Start with M | 0 | - | 4.97 | 1,373,084 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,095 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,087 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,062 |
| U.S. Geography by Letter - N | 0 | - | 3.79 | 52,149 |
| U.S. Geography by Letter - E | 0 | - | 3.73 | 48,188 |
| U.S. Geography by Letter - F | 0 | - | 3.86 | 44,442 |
| U.S. Geography by Letter - O | 0 | - | 3.43 | 33,791 |
| U.S. Geography by Letter - R | 0 | - | 4.15 | 30,265 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,821 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,077 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,634 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,120 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,823 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,865 |
| Pixelated United States Map | 0 | - | 4.89 | 93,452 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,435 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,827 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,163 |
| First Ladies of the United States | 0 | - | 4.28 | 85,230 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,110 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,261 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 15,998 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,634 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,620 |
| New York Cities Map Quiz | 0 | - | 4.54 | 42,039 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,607 |
| New England States | 0 | - | 4.51 | 59,705 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,658 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,379,793 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,394 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,469 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,881 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,271 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,026 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,302 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,882 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,664,076 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,625 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,656 |
| U.S. States by Borders | 0 | - | 4.63 | 35,065 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,157 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,230 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,127 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,569 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,371 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,853 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,066 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,463 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,058 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,652 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,681 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,192 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,487 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,879 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,253 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,470 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,146 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,906 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,287 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,497 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,222 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,102 |
| European Geography A-Z | 0 | - | 4.28 | 48,987 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,457 |
| Russia A-Z | 0 | - | 4.46 | 27,134 |
| Name the English Monarchs | 0 | - | 4.92 | 497,782 |
| Asian Geography By Letter - S | 0 | - | 4.18 | 55,913 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 51,687 |
| Asian Geography by Letter - G | 0 | - | 4.35 | 50,986 |
| Asian Geography by Letter - I | 0 | - | 4.36 | 67,504 |
| Asian Geography by Letter - C | 0 | - | 4.32 | 64,492 |
| Asian Geography by Letter - N | 0 | - | 4.33 | 50,001 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,482 |
