| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,639 |
| United States Map Quiz | 0 | - | 4.98 | 4,161,935 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,917 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,559 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,556 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,266 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,006 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,045 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,780 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,712 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,536 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,316 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,337 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,255 |
| Pixelated United States Map | 0 | - | 4.87 | 94,393 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,852 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,910 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,047 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,599 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,578 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,198 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,499 |
| U.S. States By Population | 0 | - | 4.92 | 153,666 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,613 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,536 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,649 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,432 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,286 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,727 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,207 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,901 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,357 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,630 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,382 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,677 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,024,872 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,264 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,185 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,695 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,876 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,564 |
| The United States... or the United Kingdom? | 0 | - | 4.87 | 98,668 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,705 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 58,111 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,322 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,277 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,304 |
| States of Mexico | 0 | - | 4.96 | 176,503 |
| Mexico States Map Quiz | 0 | - | 4.84 | 104,909 |
| Central American Countries | 0 | - | 4.98 | 156,651 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 148,860 |
| Top U.S. Universities | 0 | - | 4.15 | 145,276 |
| Territories of the United States | 0 | - | 4.80 | 52,440 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,719 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,601 |
| U.S. States by Governor | 0 | - | 4.43 | 18,073 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,709 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,699 |
| Red State or Blue State Trait? | 0 | - | 4.42 | 55,422 |
| New York City Geography | 0 | - | 4.42 | 33,118 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,569 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,601 |
| United States Landmarks Map Quiz | 0 | - | 4.55 | 40,199 |
| United States Country Quiz | 0 | - | 4.43 | 101,645 |
| Busiest Air Routes from the U.S. | 0 | - | 4.46 | 76,916 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.75 | 60,035 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,273 |
| Biggest U.S. Car Insurance Companies | 0 | - | 4.26 | 6,131 |
| American Legal Vocabulary | 0 | - | 4.40 | 33,943 |
| The U.S. Government - How Does it Work? | 0 | - | 4.34 | 42,383 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,968 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,433 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,496 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,493 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,194 |
| Recommended Childhood Vaccines for Americans | 0 | - | 4.42 | 14,730 |
| Countries Closest to the U. S. | 0 | - | 4.41 | 209,686 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,211 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,931 |
| New England States | 0 | - | 4.51 | 59,826 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,857 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 38,026 |
| Add a Letter - Make a U.S. State | 0 | - | 4.70 | 82,875 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.70 | 56,069 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,976 |
| U.S. States by Borders | 0 | - | 4.61 | 35,354 |
| Save Americans by Guessing U.S. States | 0 | - | 4.63 | 186,168 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,518 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,113 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,253 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,717 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,084 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,735 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,263 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,408 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,728 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 91,009 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,946 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,447 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,680 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,037 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 46,954 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,277 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,017 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,173 |
| Senators Who Ran For President | 0 | - | 4.24 | 17,054 |
| U.S. Electoral College Landslides | 0 | - | 4.35 | 22,047 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,515 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,224 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,165 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,990 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,821 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,895 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,186 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 59,506 |
| Top 10 U.S. States People are Moving To | 0 | - | 4.74 | 63,904 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,515 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,789 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,957 |
| Georgia ... or Georgia? | 0 | - | 4.67 | 76,830 |
| Flags of North and South America | 0 | - | 4.99 | 373,837 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,003 |
| South America Map Quiz | 0 | - | 5.00 | 1,550,955 |
| Belize Country Quiz | 0 | - | 4.85 | 21,004 |
| Saint Vincent and the Grenadines Country Quiz | 0 | - | 4.88 | 19,239 |
| Largest United States Airlines | 0 | - | 4.39 | 55,057 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,777 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,282 |
| Florida Pro Sport Teams | 0 | - | 4.61 | 11,855 |
| Boston Talk to English Translation Quiz | 0 | - | 4.59 | 56,001 |
| Events in U.S. History | 0 | - | 4.41 | 28,695 |
| Embarrassing Chapters in US History | 0 | - | 4.17 | 33,125 |
| Canada Immigration by Country | 0 | - | 4.51 | 62,670 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,484 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,419 |
| Buddhist Countries | 0 | - | 4.96 | 144,512 |
| The Only American Country ... | 0 | - | 4.92 | 121,747 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,223 |
| Dominica Country Quiz | 0 | - | 4.81 | 19,854 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,320 |
| USA Tourist Attractions by Description #1 | 0 | - | 4.14 | 27,141 |
| Which Island in the United States? | 0 | - | 4.29 | 29,571 |
| American Foods | 0 | - | 3.66 | 39,395 |
| Countries Across the Ocean from the U.S. | 0 | - | 3.95 | 32,274 |
| U.S. Cities by Picture #1 | 0 | - | 4.36 | 34,592 |
| Cities by Picture #2 | 0 | - | 4.19 | 35,162 |
| U.S. Landmarks Picture Quiz | 0 | - | 4.26 | 14,772 |
| U.S. Groups of Four Quiz | 0 | - | 4.39 | 25,354 |
| U.S. Groups of Three Quiz | 0 | - | 4.04 | 20,917 |
| Old West History | 0 | - | 4.34 | 15,283 |
| Life of Benjamin Franklin | 0 | - | 4.24 | 6,525 |
| American Revolution - Multiple Choice | 0 | - | 4.34 | 19,947 |
| U.S. History Multiple Choice #3 | 0 | - | 4.43 | 24,742 |
| Last 10 U.S. States Alphabetically | 0 | - | 4.35 | 74,890 |
| Top 10 Least Populous U.S. State Capitals | 0 | - | 4.52 | 21,535 |
| Flyover States | 0 | - | 4.52 | 29,527 |
| U.S. States With Double Letters | 0 | - | 4.55 | 24,147 |
| U.S. States Bigger than Their Neighbors | 0 | - | 4.28 | 76,223 |
| 50 States, 50 Cities - Easy Version | 0 | - | 4.39 | 128,442 |
| U.S. States with the Most Gun Ownership | 0 | - | 4.45 | 29,722 |
| U.S. States with Oldest Median Age | 0 | - | 4.33 | 42,606 |
| Top 10 U.S. States with the Longest Commutes | 0 | - | 4.28 | 44,430 |
| US States with the Most Executions | 0 | - | 4.51 | 26,403 |
| Top 10 U.S. States with the Most Lighthouses | 0 | - | 4.61 | 29,090 |
| Top 10 Least White U.S. States | 0 | - | 4.17 | 48,057 |
| Top 10 Least Happy U.S. States | 0 | - | 4.54 | 24,168 |
| Monarchies of Europe | 0 | - | 4.90 | 98,268 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,798 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,179 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,586 |
| Monarchies of Asia | 0 | - | 4.97 | 71,163 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,971 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,926 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,670 |
| Orthodox Countries | 0 | - | 4.92 | 132,158 |
| Countries with the Most Muslims | 0 | - | 4.95 | 160,577 |
| Caribbean Countries and Territories | 0 | - | 4.80 | 112,894 |
| US States Quiz | 0 | - | 5.00 | 16,901,663 |
| 10 U.S. States with the Most Valuable Crops | 0 | - | 4.41 | 29,590 |
| U.S. States with the Lowest HDI | 0 | - | 4.47 | 28,865 |
| Which U.S. State - Multiple Choice | 0 | - | 4.48 | 20,311 |
| Top 10 U.S. States with the Highest Life Expectancy | 0 | - | 4.33 | 41,677 |
| Top 10 Least-Forested U.S. States | 0 | - | 4.50 | 46,549 |
| Canada Country Quiz | 0 | - | 4.54 | 132,596 |
| Canada Cities Map Quiz | 0 | - | 4.64 | 124,286 |
| Canada A-Z | 0 | - | 4.73 | 32,868 |
| A Quiz About Islam | 0 | - | 4.31 | 48,475 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 34,911 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,711 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,492 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,532 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,477 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,911 |
| History of Mexico | 0 | - | 4.58 | 15,323 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,019 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,085 |
| Brazil States Map Quiz | 0 | - | 4.85 | 48,200 |
| States of Brazil | 0 | - | 4.97 | 88,407 |
| Fictional Characters from the Midwest by Picture | 0 | - | 4.04 | 19,205 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,662 |
