| States of Mexico | 0 | - | 4.96 | 176,663 |
| Mexico States Map Quiz | 0 | - | 4.84 | 104,953 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,640 |
| US States Quiz | 0 | - | 5.00 | 16,911,545 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,695 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,139 |
| States of Brazil | 0 | - | 4.97 | 88,531 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,086 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,836 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,795 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,729 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 332,960 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,929 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,363 |
| Pixelated United States Map | 0 | - | 4.88 | 94,429 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,909 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,963 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,032 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,108 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,670 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,633 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,280 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,601 |
| U.S. States By Population | 0 | - | 4.92 | 153,716 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,674 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,574 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,316 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,767 |
| Canada A-Z | 0 | - | 4.73 | 32,885 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,439 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,551 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,498 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,926 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,514 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,223 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,915 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,651 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,779 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,816 |
| US States with an Empty Map | 0 | - | 5.00 | 625,824 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,918 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,590 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,333 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,455 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,389 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,254 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,889 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,298 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,984 |
| Flags of North and South America | 0 | - | 4.99 | 374,117 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,632 |
| Belize Country Quiz | 0 | - | 4.85 | 21,010 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,512 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,150 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,175 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,156 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,851 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 53,992 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,370 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,216 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,383 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,235 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,950 |
| People on Money - United States | 0 | - | 4.31 | 63,367 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,899 |
| Famous Germans | 0 | - | 4.50 | 55,504 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,735 |
| The Only American Country ... | 0 | - | 4.92 | 121,788 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,256 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,585 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,710 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,609 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,210 |
| United States Country Quiz | 0 | - | 4.43 | 101,686 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,937 |
| Canada Country Quiz | 0 | - | 4.54 | 132,642 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,322 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 84,538 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,659 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,047 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,353 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,789 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,384 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,599 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,067 |
| South America A-Z | 0 | - | 4.13 | 10,919 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,225 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,158 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 209,782 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,974 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,028 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 59,947 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,389 |
| New England States | 0 | - | 4.51 | 59,829 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,876 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,031 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 82,900 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,100 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,995 |
| U.S. States by Borders | 0 | - | 4.61 | 35,367 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,536 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,137 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,267 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,614 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,224 |
| Famous French People | 0 | - | 4.07 | 35,818 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,826 |
| Canada or Africa by Area | 0 | - | 4.78 | 18,410 |
| Famous Australians by Description | 0 | - | 4.23 | 27,994 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,468 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,363 |
| U.S. Geography by Letter - N | 0 | - | 3.80 | 52,791 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 48,821 |
| U.S. Geography by Letter - F | 0 | - | 3.84 | 45,087 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 41,546 |
| U.S. Geography by Letter - R | 0 | - | 4.18 | 31,087 |
| South American Physical Geography | 0 | - | 4.58 | 18,365 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,892 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,649 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,790 |
| El Salvador Country Quiz | 0 | - | 4.63 | 31,763 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 32,229 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,305 |
| Cuba Country Quiz | 0 | - | 4.70 | 51,575 |
| Jamaica Country Quiz | 0 | - | 4.58 | 35,140 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,654 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,512 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,464 |
| Top U.S. Universities | 0 | - | 4.15 | 145,340 |
| Largest United States Airlines | 0 | - | 4.39 | 55,067 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,516 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,258 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 82,925 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,012 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,961 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,419 |
| U.S. States by Governor | 0 | - | 4.43 | 18,078 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,714 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,705 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,863 |
| Events in U.S. History | 0 | - | 4.41 | 28,704 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 52,981 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,874 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,529 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,234 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,839 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,909 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,904 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,944 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 176,314 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,523 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,791 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 113,967 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,323 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,692,410 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,288 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,180 |
| O Canada Lyrics | 0 | - | 4.47 | 50,974 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 35,059 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,636 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,640 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,084 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,852 |
| Africa A-Z | 0 | - | 4.57 | 46,670 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,607 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,179 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 51,941 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,713 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,393 |
| American Founding Fathers | 0 | - | 4.42 | 23,235 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,520 |
| California Groups of Things | 0 | - | 4.25 | 45,521 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,292 |
| New York Groups of Things | 0 | - | 4.35 | 63,904 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,502 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,115 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,910 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,536 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,507 |
| Flyover States | 0 | - | 4.52 | 29,534 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,159 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,251 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,377 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,131 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,513 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,135 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,570 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,665 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,466 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,960 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,838 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 119,164 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,342 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,562 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,844 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,733 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 144,855 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,405 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,422 |
| Famous Russians | 0 | - | 4.16 | 23,859 |
