| States of Mexico | 0 | - | 4.96 | 177,044 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,258 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,973 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,712 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,338 |
| US States Quiz | 0 | - | 5.00 | 16,930,720 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,916 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,269 |
| States of Brazil | 0 | - | 4.97 | 88,803 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,170 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,956 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,094 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 333,547 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,964 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,454 |
| Pixelated United States Map | 0 | - | 4.88 | 94,511 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,033 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,062 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,332 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,180 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,788 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,725 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,413 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,739 |
| U.S. States By Population | 0 | - | 4.92 | 153,802 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,792 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,624 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,572 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,353 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,833 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,476 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,671 |
| Mexico Country Quiz | 0 | - | 4.49 | 72,564 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,711 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,262 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 748,305 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,771 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,933 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,904 |
| US States with an Empty Map | 0 | - | 5.00 | 626,393 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,995 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,642 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,480 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,609 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,804 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,953 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,603 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,385 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,035 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,406 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 62,043 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,144 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,833 |
| Flags of North and South America | 0 | - | 4.99 | 374,759 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,654 |
| Belize Country Quiz | 0 | - | 4.85 | 21,024 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,246 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,562 |
| South American Geography Quiz #2 | 0 | - | 4.37 | 41,954 |
| California Groups of Things | 0 | - | 4.25 | 45,583 |
| New York Groups of Things | 0 | - | 4.35 | 67,247 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,523 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,442 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,947 |
| German Groups of Things | 0 | - | 4.46 | 38,545 |
| The Only American Country ... | 0 | - | 4.92 | 121,873 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,622 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,622 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,222 |
| United States Country Quiz | 0 | - | 4.43 | 101,803 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,980 |
| Canada Country Quiz | 0 | - | 4.54 | 132,733 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,403 |
| Canada A-Z | 0 | - | 4.73 | 32,906 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,086 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,431 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 323,402 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,258 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,410 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 80,339 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,453 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,733 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,195 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,174 |
| Word Chain - South America | 0 | - | 4.51 | 23,945 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,302 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,212 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,311 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 209,947 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,112 |
| U.S. Federal Agency Acronyms | 0 | - | 4.50 | 80,052 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.43 | 59,977 |
| 10 Closest Megacities to New York City | 0 | - | 4.52 | 67,422 |
| New England States | 0 | - | 4.51 | 59,845 |
| U.S. States by Land Area | 0 | - | 4.63 | 52,920 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,048 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 82,946 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,142 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 41,023 |
| U.S. States by Borders | 0 | - | 4.61 | 35,391 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,563 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,174 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,285 |
| African-American Historical Figures | 0 | - | 4.18 | 17,241 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,699 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,317 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,399 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,650 |
| British Groups of Things | 0 | - | 4.25 | 82,925 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,858 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,487 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,591 |
| South American Physical Geography | 0 | - | 4.58 | 18,376 |
| Countries Bordering Brazil | 0 | - | 4.96 | 131,978 |
| Countries That Visit Brazil The Most | 0 | - | 4.95 | 49,707 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,836 |
| El Salvador Country Quiz | 0 | - | 4.63 | 31,788 |
| Costa Rica Country Quiz | 0 | - | 4.75 | 32,254 |
| Largest Virgin Islands | 0 | - | 4.24 | 5,306 |
| Cuba Country Quiz | 0 | - | 4.70 | 51,608 |
| Jamaica Country Quiz | 0 | - | 4.58 | 35,170 |
| Haiti Country Quiz | 0 | - | 4.79 | 32,690 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,630 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,580 |
| Top U.S. Universities | 0 | - | 4.15 | 145,435 |
| Largest United States Airlines | 0 | - | 4.39 | 55,088 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,640 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,452 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 83,393 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,117 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,039 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,596 |
| U.S. States by Governor | 0 | - | 4.43 | 18,084 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,720 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,719 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,869 |
| Events in U.S. History | 0 | - | 4.41 | 28,727 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 53,011 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,918 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,549 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,257 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,867 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,975 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,919 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,035 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 176,659 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,535 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,802 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 114,017 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,331 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,693,860 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,353 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,207 |
| O Canada Lyrics | 0 | - | 4.47 | 50,992 |
| NHL Hockey Teams in Canada | 0 | - | 4.35 | 35,096 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,941 |
| Word Scramble - Asian Countries | 0 | - | 4.49 | 109,082 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 276,056 |
| Word Chain - Africa | 0 | - | 4.47 | 31,661 |
| Canada or Africa by Area | 0 | - | 4.78 | 18,443 |
| U.S. Geography by Letter - C | 0 | - | 4.27 | 74,343 |
| U.S. Geography by Letter - A | 0 | - | 4.37 | 63,366 |
| U.S. Geography by Letter - D | 0 | - | 4.09 | 57,323 |
| U.S. Geography by Letter - T | 0 | - | 4.29 | 50,061 |
| U.S. Geography by Letter - P | 0 | - | 4.38 | 54,203 |
| U.S. Geography by Letter - M | 0 | - | 4.14 | 53,526 |
| U.S. Geography by Letter - L | 0 | - | 4.04 | 41,375 |
| U.S. Geography by Letter - G | 0 | - | 4.13 | 39,537 |
| U.S. Geography by Letter - R | 0 | - | 4.22 | 36,212 |
| U.S. Geography By Letter - H | 0 | - | 4.35 | 40,418 |
| Famous People from South America | 0 | - | 4.15 | 22,031 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,966 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,634 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,199 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,374 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,931 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 52,301 |
| Biggest Trading Partners - United States | 0 | - | 4.63 | 106,749 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,405 |
| American Founding Fathers | 0 | - | 4.42 | 23,248 |
| Famous People from California by Picture | 0 | - | 4.32 | 36,558 |
| Hawaiian Islands Map Quiz | 0 | - | 4.78 | 22,295 |
| People on Money - United States | 0 | - | 4.31 | 63,383 |
| 100 Most Influential Figures in U.S. History | 0 | - | 4.20 | 45,144 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,934 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,543 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,582 |
| Flyover States | 0 | - | 4.52 | 29,544 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,189 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,281 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,396 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,138 |
| States and Provinces that touch the Rocky Mountains | 0 | - | 4.43 | 32,525 |
| Name a Valid U.S. State #2 | 0 | - | 4.63 | 77,189 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,598 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,689 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,535 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,987 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,876 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 119,193 |
