| States of Mexico | 0 | - | 4.95 | 173,724 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,943 |
| US States Quiz | 0 | - | 5.00 | 16,725,045 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,496 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,911 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,104 |
| States of Brazil | 0 | - | 4.98 | 86,617 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,264 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,767 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,349 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,308 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,640 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,565 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.84 | 65,715 |
| Pixelated United States Map | 0 | - | 4.89 | 93,598 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,630 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,966 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,418 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,878 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,500 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,547 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,834 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,087 |
| U.S. States By Population | 0 | - | 4.92 | 152,488 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,535 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,956 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,805 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,971 |
| Canada A-Z | 0 | - | 4.73 | 32,675 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,478 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 68,827 |
| U.S. Geography by Letter - S | 0 | - | 4.54 | 52,337 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,049 |
| Mexico Cities Map Quiz | 0 | - | 4.77 | 33,328 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,845 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 743,696 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,552 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,734 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,721 |
| US States with an Empty Map | 0 | - | 5.00 | 619,594 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,173 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,004 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 94,900 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,104 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,991 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,999 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,811 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,206 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,602 |
| Flags of North and South America | 0 | - | 4.99 | 368,226 |
| Belize Country Quiz | 0 | - | 4.85 | 20,830 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,935 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 73,597 |
| U.S. Geography by Letter - A | 0 | - | 4.38 | 62,566 |
| U.S. Geography by Letter - D | 0 | - | 4.08 | 56,562 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 49,234 |
| U.S. Geography by Letter - P | 0 | - | 4.36 | 47,660 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 52,840 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 40,653 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 38,806 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 39,569 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,804 |
| People on Money - United States | 0 | - | 4.31 | 63,225 |
| The Only American Country ... | 0 | - | 4.92 | 120,875 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,430 |
| Uruguay Country Quiz | 0 | - | 4.83 | 31,386 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,317 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,472 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,488 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,095 |
| United States Country Quiz | 0 | - | 4.43 | 100,731 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,647 |
| Canada Country Quiz | 0 | - | 4.55 | 131,834 |
| Canada Cities Map Quiz | 0 | - | 4.63 | 123,700 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,455 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,080 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 59,693 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,166 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,629 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,218 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,485 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,265 |
| South America A-Z | 0 | - | 4.13 | 10,847 |
| Brazil States Map Quiz | 0 | - | 4.85 | 47,488 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,127 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,577 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 208,045 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,913 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 79,773 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,635 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,211 |
| New England States | 0 | - | 4.51 | 59,715 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,529 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,898 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,388 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,691 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,690 |
| U.S. States by Borders | 0 | - | 4.63 | 35,108 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,268 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,179 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,017 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,139 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,514 |
| Most-Visited Countries by Canadians | 0 | - | 4.77 | 39,133 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,550 |
| Canada or Africa by Area | 0 | - | 4.77 | 18,103 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,106 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,170 |
| U.S. Geography by Letter - N | 0 | - | 3.79 | 52,388 |
| U.S. Geography by Letter - E | 0 | - | 3.75 | 48,403 |
| U.S. Geography by Letter - F | 0 | - | 3.87 | 44,644 |
| U.S. Geography by Letter - O | 0 | - | 3.52 | 40,240 |
| U.S. Geography by Letter - R | 0 | - | 4.18 | 30,494 |
| South American Physical Geography | 0 | - | 4.58 | 18,284 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,151 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,323 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,395 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 31,968 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,276 |
| Cuba Country Quiz | 0 | - | 4.69 | 51,230 |
| Jamaica Country Quiz | 0 | - | 4.58 | 34,892 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,395 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,549 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,617 |
| Top U.S. Universities | 0 | - | 4.15 | 144,220 |
| Largest United States Airlines | 0 | - | 4.39 | 54,865 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,419 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 105,121 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,817 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,936 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,173 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,676 |
| U.S. States by Governor | 0 | - | 4.43 | 17,992 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,590 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,562 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,768 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,689 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,469 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,304 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,051 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,617 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,441 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,787 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,565 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,873 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,405 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,681 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,107 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,237 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,679,186 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,628 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,916 |
| O Canada Lyrics | 0 | - | 4.47 | 50,808 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 34,592 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,472 |
| Georgia ... or Georgia? | 0 | - | 4.69 | 76,473 |
| Africa A-Z | 0 | - | 4.57 | 46,406 |
| U.S. Cities by Picture #1 | 0 | - | 4.37 | 34,378 |
| Cities by Picture #2 | 0 | - | 4.19 | 34,961 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.50 | 40,782 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,397 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,198 |
| American Founding Fathers | 0 | - | 4.41 | 23,085 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,180 |
| California Groups of Things | 0 | - | 4.25 | 45,290 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,209 |
| New York Groups of Things | 0 | - | 4.38 | 59,968 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,275 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 44,757 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,642 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,470 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 52,974 |
| Flyover States | 0 | - | 4.52 | 29,418 |
| U.S. States With Double Letters | 0 | - | 4.54 | 23,953 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.27 | 75,864 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,222 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,990 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.42 | 32,428 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 76,548 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,305 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,496 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,034 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,645 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,483 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,603 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,121 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,349 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,461 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,587 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,740 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,163 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,707 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 34,646 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,716 |
| U.S. Geography by Letter - W | 0 | - | 3.84 | 23,054 |
| El Salvador Country Quiz | 0 | - | 4.62 | 31,514 |
| Guatemala Country Quiz | 0 | - | 4.63 | 25,247 |
| Honduras Country Quiz | 0 | - | 4.52 | 23,720 |
| Panama Country Quiz | 0 | - | 4.61 | 25,630 |
| Nicaragua Country Quiz | 0 | - | 4.62 | 26,402 |
