| California A-Z | 0 | - | 4.49 | 28,708 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,689 |
| Random U.S. States on a Map | 0 | - | 4.96 | 621,486 |
| New York City A-Z | 0 | - | 4.18 | 32,193 |
| US States Quiz | 0 | - | 5.00 | 16,700,856 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,868 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,658 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,552 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,413 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,262 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,829 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.81 | 55,608 |
| US States with an Empty Map | 0 | - | 5.00 | 618,832 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,734 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,361 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,418 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,669 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,907 |
| U.S. States By Population | 0 | - | 4.92 | 152,369 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,404 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,866 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,904 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,553 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,765 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,881 |
| U.S. Senators by State | 0 | - | 4.45 | 39,754 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 158,879 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,081 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,488 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,069 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,659 |
| Top 10 U.S. States Where the Rent is Too Dang High | 0 | - | 4.84 | 66,833 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,400 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,440 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,951 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,083 |
| Vietnam War Countries | 0 | - | 4.83 | 93,609 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,094 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,933 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 501,855 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,715 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,583 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,941 |
| Los Angeles A-Z | 0 | - | 4.20 | 9,467 |
| Chicago A-Z | 0 | - | 4.25 | 15,456 |
| Countries Closest to Spain A-Z | 0 | - | 4.99 | 107,678 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,915 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,653 |
| U.S. State Flags | 0 | - | 4.89 | 167,094 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,581 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,455 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,088 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,704 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,600 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,066 |
| Which City in California? | 0 | - | 4.56 | 31,882 |
| Monarchies of Europe | 0 | - | 4.90 | 97,311 |
| Monarchies of Asia | 0 | - | 4.97 | 70,601 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,432 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,869 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,960 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,045 |
| Fifty US States in One Minute | 0 | - | 4.56 | 3,518,597 |
| Category Elimination - U.S. States #1 | 0 | - | 4.87 | 218,549 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,507 |
| States that Beat California | 0 | - | 4.54 | 63,241 |
| States that Beat Texas | 0 | - | 4.58 | 44,100 |
| States that Beat New York | 0 | - | 4.51 | 44,555 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,536 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,169 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,720 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,097 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,567 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,378 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,750 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,665 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,185 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,662 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,914 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,259 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,363 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,248 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,087 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,244 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,119 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,492 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 26,931 |
| Scotland A-Z | 0 | - | 4.73 | 41,044 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,961 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,999 |
| Top 10 Richest U.S. States by Median Income | 0 | - | 4.47 | 118,560 |
| U.S. States by Coldest Recorded Temperature | 0 | - | 4.51 | 66,186 |
| 10 U.S. States With The Highest Murder Rates | 0 | - | 4.46 | 52,037 |
| 10 U.S. States With The Lowest Murder Rates | 0 | - | 4.51 | 39,747 |
| U.S. States by Wikipedia Descriptions #1 | 0 | - | 4.57 | 39,193 |
| U.S. States by Wikipedia Descriptions #2 | 0 | - | 4.47 | 36,980 |
| U.S. State Superlatives #1 | 0 | - | 4.47 | 87,272 |
| U.S. State Superlatives #2 | 0 | - | 4.53 | 40,480 |
| Top 10 U.S. States With the Most Tornadoes | 0 | - | 4.53 | 64,429 |
| Top 10 Least Religious U.S. States | 0 | - | 4.51 | 34,088 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,408 |
| Top 10 U.S. States with the Most Precipitation | 0 | - | 4.46 | 41,562 |
| U.S. Cities A-Z by Clue | 0 | - | 4.36 | 39,666 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,197 |
| Name a World Capital A-Z | 0 | - | 5.00 | 174,976 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,541 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,885 |
| Which City in Texas? | 0 | - | 4.45 | 24,971 |
| Which City in Florida? | 0 | - | 4.61 | 10,924 |
| Hindu Countries | 0 | - | 4.85 | 49,580 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,971 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,419 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,095 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,176 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,152 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,465 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,853 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,110 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,579 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,326 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,806 |
| US States by Borders in 30 Seconds | 0 | - | 4.68 | 2,664,628 |
| Pixelated United States Map | 0 | - | 4.89 | 93,479 |
| U.S. States by First Two Letters in 30 Seconds | 0 | - | 4.69 | 1,380,310 |
| States that Beat Florida | 0 | - | 4.32 | 40,601 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.48 | 75,793 |
| U.S. Cities with the Highest Murder Rate | 0 | - | 4.55 | 137,677 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,209 |
| Richest Metro Areas in the U.S. | 0 | - | 4.42 | 43,199 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,359 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,189 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,353 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,317 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,447 |
| Biggest Trading Partners - Colombia | 0 | - | 4.88 | 39,976 |
| Russia A-Z | 0 | - | 4.46 | 27,143 |
| Australia A-Z | 0 | - | 4.54 | 49,781 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,471 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,310 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,303 |
| Asia Map Quiz | 0 | - | 4.99 | 907,025 |
| California Cities Map Quiz | 0 | - | 4.50 | 87,639 |
| Florida Cities Map Quiz | 0 | - | 4.48 | 60,634 |
| New York Cities Map Quiz | 0 | - | 4.54 | 42,045 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 233,196 |
| U.S. Map with Random Merged States | 0 | - | 4.94 | 300,035 |
| Hawaiian Islands | 0 | - | 4.83 | 42,427 |
| Rivers of the United States | 0 | - | 4.93 | 65,517 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,201 |
| U.S. States with the Longest International Borders | 0 | - | 4.78 | 45,581 |
| Longest U.S. State Borders | 0 | - | 4.67 | 39,385 |
| U.S. States with the Fewest Borders | 0 | - | 4.77 | 113,034 |
| U.S. States with the Most Borders | 0 | - | 4.53 | 62,228 |
| Walking Across U.S. State Borders with Hints | 0 | - | 4.74 | 34,928 |
| U.S. States with the Fewest Immigrants | 0 | - | 4.63 | 65,411 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,948 |
| U.S. States with the Highest Percentage of Farmland | 0 | - | 4.80 | 65,277 |
| U.S. States with the Lowest Percentage of Farmland | 0 | - | 4.74 | 55,029 |
| Top 10 U.S. States That Grow the Most Corn | 0 | - | 4.52 | 36,015 |
| Top 10 U.S. States with the Highest Elevation | 0 | - | 4.51 | 67,769 |
| U.S. States with the Lowest Average Elevation | 0 | - | 4.55 | 38,391 |
| U.S. States With the Highest Average Elevation | 0 | - | 4.61 | 32,665 |
| New England States | 0 | - | 4.51 | 59,707 |
| U.S. License Plates Picture Quiz | 0 | - | 4.59 | 52,663 |
| U.S. States by Land Area | 0 | - | 4.61 | 52,475 |
| U.S. States by Hottest Recorded Temperature | 0 | - | 4.36 | 57,183 |
| Top 10 U.S. States by Inland Water Area | 0 | - | 4.53 | 37,883 |
| Add a Letter - Make a U.S. State | 0 | - | 4.72 | 82,315 |
| Top 10 Widest U.S. States East to West | 0 | - | 4.69 | 55,641 |
| Top 10 Tallest U.S. States North to South | 0 | - | 4.74 | 40,664 |
| U.S. States by Borders | 0 | - | 4.63 | 35,069 |
| Save Americans by Guessing U.S. States | 0 | - | 4.61 | 182,572 |
| Win the U.S. Presidential Election | 0 | - | 4.80 | 618,497 |
| 10 Easternmost U.S. States | 0 | - | 4.53 | 56,241 |
| The Only U.S. State ... #1 | 0 | - | 4.52 | 101,138 |
| A Superlative for Every U.S. State | 0 | - | 4.44 | 27,918 |
| Top 10 U.S. States with the Lowest Life Expectancy | 0 | - | 4.67 | 44,960 |
| 50 States, 50 Cities - Hard Version | 0 | - | 4.46 | 43,991 |
| U.S. States with the Most Expensive Home Prices | 0 | - | 4.48 | 99,311 |
| U.S. States with the Cheapest Home Prices | 0 | - | 4.70 | 32,783 |
| Top 10 Most African-American U.S. States | 0 | - | 4.46 | 74,413 |
| Top 10 Most Asian U.S. States | 0 | - | 4.80 | 74,876 |
| Top 10 Most Obese U.S. States | 0 | - | 4.54 | 81,212 |
| Top 10 Least Obese U.S. States | 0 | - | 4.75 | 73,409 |
| Top 10 Least-Educated U.S. States | 0 | - | 4.43 | 89,978 |
| Top 10 Most-Educated U.S. States | 0 | - | 4.48 | 84,340 |
| U.S. States with the Highest Rates of Homelessness | 0 | - | 4.43 | 52,153 |
| Top 10 Most White U.S. States | 0 | - | 4.49 | 81,872 |
| Top 10 Most German U.S. States | 0 | - | 4.48 | 59,577 |
| 10 U.S. States with the Highest Tax Burden | 0 | - | 4.26 | 38,019 |
| Top 10 U.S. States by Manufacturing Employment | 0 | - | 4.49 | 28,731 |
| U.S. States With No City Over 100,000 | 0 | - | 4.57 | 17,817 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,226,637 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,563 |
| European Cities A-Z by Clue #1 | 0 | - | 4.25 | 77,534 |
| Name a City - European Countries | 0 | - | 4.92 | 64,391 |
| Africa Capitals Quiz | 0 | - | 4.99 | 730,242 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,899 |
| Word Puzzles - U.S. State Capitals | 0 | - | 4.62 | 34,585 |
| U.S. State Capitals Where it Doesn't Snow | 0 | - | 4.56 | 51,033 |
