| States of Mexico | 0 | - | 4.96 | 176,444 |
| Mexico States Map Quiz | 0 | - | 4.84 | 104,887 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,610 |
| US States Quiz | 0 | - | 5.00 | 16,896,888 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,287 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,948 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,047 |
| States of Brazil | 0 | - | 4.97 | 88,342 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,029 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,761 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,679 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,459 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 332,641 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,909 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,305 |
| Pixelated United States Map | 0 | - | 4.87 | 94,366 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,831 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,887 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,936 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,030 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,567 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,555 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,165 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,464 |
| U.S. States By Population | 0 | - | 4.92 | 153,648 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,584 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,520 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,264 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,709 |
| Canada A-Z | 0 | - | 4.73 | 32,859 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,429 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,467 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,469 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,907 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,488 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,207 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,553 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,571 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,654 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,728 |
| US States with an Empty Map | 0 | - | 5.00 | 625,335 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,859 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,548 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,224 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,352 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,221 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,759 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,783 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,214 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,949 |
| Flags of North and South America | 0 | - | 4.99 | 373,734 |
| Belize Country Quiz | 0 | - | 4.85 | 20,998 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,453 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,124 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,138 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,132 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,826 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 53,953 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,357 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,184 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,348 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,200 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,937 |
| People on Money - United States | 0 | - | 4.31 | 63,355 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,863 |
| The Only American Country ... | 0 | - | 4.92 | 121,720 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,204 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,616 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,563 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,610 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,596 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,196 |
| United States Country Quiz | 0 | - | 4.43 | 101,623 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,911 |
| Canada Country Quiz | 0 | - | 4.54 | 132,580 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,275 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,575 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,028 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,283 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,779 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,373 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,591 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,004 |
| South America A-Z | 0 | - | 4.13 | 10,916 |
| Brazil States Map Quiz | 0 | - | 4.85 | 48,182 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,483 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,040 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 209,647 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,900 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,007 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,921 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,370 |
| New England States | 0 | - | 4.51 | 59,823 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,854 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,023 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 82,870 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,054 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,967 |
| U.S. States by Borders | 0 | - | 4.61 | 35,350 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,511 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,101 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,251 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,583 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,185 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,807 |
| Canada or Africa by Area | 0 | - | 4.78 | 18,395 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,443 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,226 |
| U.S. Geography by Letter - N | 0 | - | 3.80 | 52,780 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 48,798 |
| U.S. Geography by Letter - F | 0 | - | 3.84 | 45,067 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 41,523 |
| U.S. Geography by Letter - R | 0 | - | 4.18 | 31,054 |
| South American Physical Geography | 0 | - | 4.58 | 18,358 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,630 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,628 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,767 |
| El Salvador Country Quiz | 0 | - | 4.63 | 31,745 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 32,213 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,304 |
| Cuba Country Quiz | 0 | - | 4.70 | 51,555 |
| Jamaica Country Quiz | 0 | - | 4.58 | 35,115 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,644 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,434 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,387 |
| Top U.S. Universities | 0 | - | 4.15 | 145,258 |
| Largest United States Airlines | 0 | - | 4.39 | 55,054 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,444 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,166 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 82,543 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,943 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,903 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,270 |
| U.S. States by Governor | 0 | - | 4.43 | 18,071 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,708 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,693 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,854 |
| Events in U.S. History | 0 | - | 4.41 | 28,691 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 52,966 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,842 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,514 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,221 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,823 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,874 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,892 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,836 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 176,059 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,513 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,787 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 113,931 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,318 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,691,372 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,239 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,159 |
| O Canada Lyrics | 0 | - | 4.47 | 50,968 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 35,028 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,621 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,821 |
| Africa A-Z | 0 | - | 4.57 | 46,642 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,588 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,160 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 51,444 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,693 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,381 |
| American Founding Fathers | 0 | - | 4.42 | 23,233 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,490 |
| California Groups of Things | 0 | - | 4.25 | 45,503 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,283 |
| New York Groups of Things | 0 | - | 4.35 | 63,829 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,486 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,089 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,882 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,535 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,437 |
| Flyover States | 0 | - | 4.52 | 29,527 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,143 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,218 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,364 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,118 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,509 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,088 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,557 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,657 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,433 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,929 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,805 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 119,139 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,330 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,546 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,809 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,720 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 144,749 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,389 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,048 |
| Asian Cities A-Z by Clue | 0 | - | 4.50 | 39,955 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,425 |
| U.S. Geography by Letter - W | 0 | - | 3.86 | 23,439 |
| Guatemala Country Quiz | 0 | - | 4.63 | 25,450 |
| Honduras Country Quiz | 0 | - | 4.52 | 23,898 |
| Panama Country Quiz | 0 | - | 4.61 | 25,830 |
