| U.S. Presidents Quiz | 0 | - | 5.00 | 3,690,037 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,881 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,225 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,014 |
| US States Quiz | 0 | - | 5.00 | 16,839,298 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,048 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,424 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,817 |
| Name a Valid U.S. President #1 | 0 | - | 4.89 | 191,434 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,671 |
| Las Vegas Casinos | 0 | - | 4.12 | 38,043 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,572 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,671 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,201 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,235 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,745 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,009 |
| U.S. States By Population | 0 | - | 4.92 | 153,031 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,234 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,341 |
| US States with an Empty Map | 0 | - | 5.00 | 623,508 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,121 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,492 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,333 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,810 |
| U.S. Senators by State | 0 | - | 4.45 | 39,914 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,679 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,431 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,778 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,945 |
| Vietnam War Countries | 0 | - | 4.82 | 94,106 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,650 |
| Hawaiian Islands | 0 | - | 4.83 | 42,660 |
| Harvard University | 0 | - | 4.15 | 8,292 |
| Six Flags Over Texas | 0 | - | 4.78 | 63,290 |
| U.S. State Flags | 0 | - | 4.89 | 169,857 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,447 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,500 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,269 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,516 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,445 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,843 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,840 |
| India A-Z | 0 | - | 4.42 | 34,101 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,018 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,013 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,008 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,689 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 53,436 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,280 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,062 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,237 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,039 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,668 |
| U.S. Presidential Trivia #1 | 0 | - | 4.45 | 108,563 |
| U.S. Presidents by Event | 0 | - | 4.58 | 34,289 |
| Losing U.S. Presidential Candidates in History | 0 | - | 4.61 | 93,636 |
| Presidential Middle Names | 0 | - | 4.41 | 60,130 |
| U.S. Presidential Trivia #2 | 0 | - | 4.49 | 53,210 |
| Assassinated U.S. Presidents | 0 | - | 4.63 | 94,468 |
| Ten Least Guessed U.S. Presidents | 0 | - | 4.45 | 38,368 |
| California Cities A-Z | 0 | - | 4.06 | 17,203 |
| California A-Z | 0 | - | 4.49 | 28,776 |
| Georgia Counties | 0 | - | 4.50 | 49,426 |
| Texas A-Z | 0 | - | 4.19 | 16,359 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,534,764 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,417 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,904 |
| Random U.S. States on a Map | 0 | - | 4.96 | 625,356 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,667 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,781 |
| Least Irish U.S. States | 0 | - | 4.49 | 18,297 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,378 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,359 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,098 |
| U.S. Presidents Who Died in Office | 0 | - | 4.77 | 34,949 |
| Name a Valid U.S. President #2 | 0 | - | 4.54 | 69,888 |
| The American Revolution | 0 | - | 4.52 | 54,224 |
| Top 10 Los Angeles Lakers of All-Time | 0 | - | 4.24 | 46,831 |
| History of Florida | 0 | - | 4.45 | 9,814 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,398 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,787 |
| History of Texas | 0 | - | 4.43 | 14,608 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,836 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,160 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,470 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,705 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,432 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,150 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,200 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,227 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,287 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,611 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,504 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,833 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,196 |
| European Geography By Letter - S #1 | 0 | - | 4.54 | 100,418 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,954 |
| Monarchies of Europe | 0 | - | 4.90 | 97,987 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,590 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,085 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,638 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,371 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,834 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,312 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,962 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,778 |
| Monarchies of Asia | 0 | - | 4.97 | 70,999 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,791 |
| Countries that Start with A | 0 | - | 4.98 | 2,159,432 |
| Countries that Start with B | 0 | - | 4.95 | 2,291,400 |
| Countries that Start with C | 0 | - | 4.96 | 1,819,611 |
| Countries that Start with D | 0 | - | 4.96 | 707,907 |
| Countries that Start with E | 0 | - | 4.95 | 1,375,180 |
| Countries that Start with G | 0 | - | 4.97 | 1,500,858 |
| Countries that Start with H | 0 | - | 4.96 | 603,344 |
| Countries that Start with I | 0 | - | 4.92 | 1,286,429 |
| Countries that Start with J | 0 | - | 4.98 | 601,171 |
| Countries that Start with K | 0 | - | 4.97 | 814,496 |
| Countries that Start with L | 0 | - | 4.98 | 1,089,170 |
| Countries that Start with N | 0 | - | 4.93 | 1,116,135 |
| Countries that Start with P | 0 | - | 4.94 | 1,214,615 |
| Countries that Start with S | 0 | - | 4.98 | 1,752,728 |
| Countries that Start with T | 0 | - | 4.90 | 1,008,672 |
| Countries that Start with U | 0 | - | 4.97 | 903,521 |
| Countries that Start with V | 0 | - | 4.98 | 608,562 |
| Countries that Start with F | 0 | - | 4.83 | 616,489 |
| Countries that Start with M | 0 | - | 4.97 | 1,379,919 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,467 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,597 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,995 |
| U.S. Geography by Letter - N | 0 | - | 3.80 | 52,709 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 48,726 |
| U.S. Geography by Letter - F | 0 | - | 3.87 | 44,974 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 41,450 |
| U.S. Geography by Letter - R | 0 | - | 4.18 | 30,952 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,823 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 746,371 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,362 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,240 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,356 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,234 |
| Pixelated United States Map | 0 | - | 4.87 | 94,106 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 109,394 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,553 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 625,734 |
| U.S. Vice Presidents | 0 | - | 4.39 | 136,090 |
| U.S. Governors Who Ran For President | 0 | - | 4.47 | 20,244 |
| First Ladies of the United States | 0 | - | 4.28 | 85,553 |
| The Abraham Lincoln Presidency | 0 | - | 4.52 | 26,205 |
| U.S. Presidents in Order - Whammies | 0 | - | 4.32 | 76,969 |
| U.S. Vice Presidents Who Became President | 0 | - | 4.64 | 16,169 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,899 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,832 |
| New York Cities Map Quiz | 0 | - | 4.55 | 42,200 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,110 |
| New England States | 0 | - | 4.51 | 59,785 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,861 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,389,454 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,721 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,751 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,987 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,442 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,157 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,719 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,403 |
| US States by Borders in 30 Seconds | 0 | - | 4.67 | 2,677,555 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 55,931 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,879 |
| U.S. States by Borders | 0 | - | 4.61 | 35,267 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,195 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,441 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,973 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,756 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,729 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,809 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,602 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,075 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,435 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,130 |
| Shortest U.S. Presidential Terms | 0 | - | 4.75 | 12,802 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,311 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,636 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,803 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,457 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,289 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,948 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,552 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,785 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,048 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,969 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,827 |
| European Geography A-Z | 0 | - | 4.29 | 49,213 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,726 |
| Russia A-Z | 0 | - | 4.46 | 27,226 |
| Name the English Monarchs | 0 | - | 4.91 | 501,733 |
| Asian Geography By Letter - S | 0 | - | 4.17 | 56,061 |
| Asian Geography by Letter - D | 0 | - | 4.27 | 51,890 |
| Asian Geography by Letter - G | 0 | - | 4.35 | 51,175 |
| Asian Geography by Letter - I | 0 | - | 4.36 | 67,730 |
