| California A-Z | 0 | - | 4.49 | 28,799 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,333 |
| Random U.S. States on a Map | 0 | - | 4.96 | 627,187 |
| New York City A-Z | 0 | - | 4.18 | 32,316 |
| US States Quiz | 0 | - | 5.00 | 16,897,731 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,803 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,792 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,949 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,261 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,296 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,863 |
| United States Map Quiz | 0 | - | 4.98 | 4,161,559 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,002 |
| US States with an Empty Map | 0 | - | 5.00 | 625,358 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,033 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,574 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 113,561 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,170 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,469 |
| U.S. States By Population | 0 | - | 4.92 | 153,654 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,592 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,525 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,633 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,420 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,267 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,712 |
| U.S. Senators by State | 0 | - | 4.44 | 39,981 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,184 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,880 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,340 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,624 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,370 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.85 | 67,666 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,840 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 176,073 |
| U.S. Cities A-Z by Clue #1 | 0 | - | 4.36 | 39,844 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,172 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,904 |
| Vietnam War Countries | 0 | - | 4.82 | 94,299 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,862 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,555 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,222 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,231 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,736 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,358 |
| Los Angeles A-Z | 0 | - | 4.20 | 9,514 |
| Chicago A-Z | 0 | - | 4.25 | 15,520 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,342 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,989 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,184 |
| U.S. State Flags | 0 | - | 4.88 | 170,882 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,578 |
| U.S. States that Border Canada | 0 | - | 4.91 | 185,248 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,353 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,230 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,930 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,221 |
| Which City in California? | 0 | - | 4.56 | 32,051 |
| Monarchies of Europe | 0 | - | 4.90 | 98,245 |
| Monarchies of Asia | 0 | - | 4.97 | 71,152 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,957 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,553 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,547 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,054 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,542,382 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 221,055 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 134,412 |
| States that Beat California | 0 | - | 4.54 | 63,658 |
| States that Beat Texas | 0 | - | 4.58 | 44,382 |
| States that Beat New York | 0 | - | 4.50 | 45,036 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,611 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,361 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,200 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,472 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,944 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,046 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,903 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,235 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 104,128 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,765 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,476 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,614 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,709 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,053 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,284 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,228 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,136 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,044 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,344 |
| Scotland A-Z | 0 | - | 4.73 | 41,316 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,032 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 332,659 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 119,140 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.52 | 66,555 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.47 | 54,447 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.48 | 51,480 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,364 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.48 | 37,119 |
| California... or Florida? | 0 | - | 4.60 | 51,603 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,557 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,657 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,808 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,330 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,810 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,720 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,560 |
| Name a World Capital A-Z | 0 | - | 5.00 | 176,306 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,246 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,159 |
| Which City in Texas? | 0 | - | 4.45 | 25,105 |
| Which City in Florida? | 0 | - | 4.61 | 10,996 |
| Hindu Countries | 0 | - | 4.86 | 50,234 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,220 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,576 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,235 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,355 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,878 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,834 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,892 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,893 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,662 |
| Europe Map Quiz | 0 | - | 5.00 | 4,767,247 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,208 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,683,643 |
| Pixelated United States Map | 0 | - | 4.87 | 94,371 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.70 | 1,392,819 |
| States that Beat Florida | 0 | - | 4.32 | 40,854 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.48 | 76,174 |
| European Cities A-Z by Clue #1 | 0 | - | 4.26 | 79,007 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 138,456 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,461 |
| Richest Metro Areas in the U.S. | 0 | - | 4.42 | 43,811 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 144,749 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 89,163 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,129 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,463 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,192 |
| Biggest Trading Partners - Turkey | 0 | - | 4.81 | 50,829 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 40,375 |
| Russia A-Z | 0 | - | 4.46 | 27,257 |
| Australia A-Z | 0 | - | 4.54 | 50,004 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,040 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,237 |
| Africa Map Quiz | 0 | - | 5.00 | 2,119,982 |
| Asia Map Quiz | 0 | - | 4.99 | 918,066 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,996 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,914 |
| New York Cities Map Quiz | 0 | - | 4.55 | 42,255 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,570 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 302,737 |
| Hawaiian Islands | 0 | - | 4.83 | 42,749 |
| Rivers of the United States | 0 | - | 4.93 | 66,262 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,604 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,824 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,875 |
| U.S. States with the Fewest Borders | 0 | - | 4.78 | 113,932 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,318 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 35,056 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,843 |
| Top 10 U.S. States People are Leaving | 0 | - | 4.42 | 59,500 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,426 |
| 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 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,183 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,893 |
| 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 |
| New England States | 0 | - | 4.51 | 59,823 |
| U.S. License Plates Picture Quiz | 0 | - | 4.61 | 52,968 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,854 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,424 |
| 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 | 56,056 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,968 |
| U.S. States by Borders | 0 | - | 4.61 | 35,350 |
| Save Americans by Guessing U.S. States | 0 | - | 4.63 | 186,116 |
| Win the U.S. Presidential Election | 0 | - | 4.78 | 628,865 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,511 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 102,105 |
| A Superlative for Every U.S. State | 0 | - | 4.44 | 28,105 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.61 | 45,164 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 44,251 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,707 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.74 | 33,082 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,731 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 75,253 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,405 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,725 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 90,996 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,934 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,446 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 82,659 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 60,029 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,259 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,830 |
| Slowest Growing U.S. States Since 1960 | 0 | - | 4.43 | 46,952 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 18,015 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,246,429 |
| Flags of Asia Quiz | 0 | - | 4.99 | 614,813 |
