| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,222 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,422 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,689 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,730 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,439 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,497 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,677,146 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,242 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,548 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,881 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,272 |
| Biggest Cities in the World | 0 | - | 4.92 | 789,983 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,395 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,532 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,743 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,372 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,483 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,208 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,684 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,602 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 40,160 |
| Biggest Cities in the United States | 0 | - | 4.93 | 966,139 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,686 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,078 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,600 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,590 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,783 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,802 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,912 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,444 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,483 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,233 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,529 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,023 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,130 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,715 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,639 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,484 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,353 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,292 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,366 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,802 |
| Biggest Cities in Europe | 0 | - | 4.70 | 541,972 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,466 |
| Largest City by Island | 0 | - | 4.87 | 71,008 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,356 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,499 |
| Biggest European Cities by Century | 0 | - | 4.98 | 142,398 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,634 |
| Megacities on a World Map | 0 | - | 4.98 | 250,826 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 124,163 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 573,033 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,768 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,831 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,798 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,643 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,152 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 167,108 |
| U.S. Cities by Hispanic Population | 0 | - | 4.31 | 37,980 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,252 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,932 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 96,966 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,038 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,592 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,968 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,467 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,272 |
| US States Quiz | 0 | - | 5.00 | 16,693,003 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,553 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,906 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,485 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,093 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,017 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,879 |
| Biggest Cities in Canada | 0 | - | 4.54 | 131,782 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,197 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,579 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,519 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,098 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,292 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,704 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,618 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,750 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,753 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,768 |
| States of Mexico | 0 | - | 4.95 | 173,266 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,819 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,495 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,481 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,000 |
| Countries with Megacities | 0 | - | 4.99 | 246,525 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,919 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,800 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,370 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,759 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,414 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,813 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,318 |
| Pixelated United States Map | 0 | - | 4.89 | 93,437 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,681 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,320 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,367 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,606 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,865 |
| U.S. States By Population | 0 | - | 4.92 | 152,326 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,356 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,833 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,517 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,744 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,855 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,881 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,892 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,211 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,677 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.61 | 65,307 |
| Biggest City by Region | 0 | - | 4.50 | 35,990 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,891 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,847 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,008 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,215 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,902 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,247 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,536 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.47 | 30,969 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,867 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,041 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,503 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,872 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,367 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,506 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,062 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,792 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,917 |
| US States with an Empty Map | 0 | - | 5.00 | 618,559 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,658 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,537 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,879 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,779 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,829 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,826 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.48 | 75,779 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,442 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,543 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,207 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,341 |
| Biggest Cities in History | 0 | - | 4.52 | 89,095 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,108 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 83,974 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 72,742 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,461 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,226 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,173 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,404 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,755 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,182 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 31,918 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 175,767 |
| Biggest Cities in Japan | 0 | - | 4.67 | 82,501 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,006 |
| Biggest Cities in France | 0 | - | 4.69 | 221,959 |
| Biggest Cities in Spain | 0 | - | 4.63 | 169,763 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 55,631 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,429 |
| Biggest Cities in the UK | 0 | - | 4.48 | 104,117 |
| Biggest Cities in China | 0 | - | 4.53 | 156,953 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 46,942 |
| Biggest Cities in India | 0 | - | 4.70 | 67,315 |
| Biggest Cities in Italy | 0 | - | 4.75 | 239,376 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,464 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,934 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,566 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,882 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,116 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,965 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,307 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,601 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,836 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,625 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,012 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,532 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,935 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,151 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,114 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,262 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,860 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,359 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,540 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,256 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,405 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,240 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,221 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,565 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,530 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,769 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,164 |
| Canada or Africa by Area | 0 | - | 4.77 | 18,056 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,071 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,040 |
| Belize Country Quiz | 0 | - | 4.85 | 20,792 |
| Flags of North and South America | 0 | - | 4.99 | 366,733 |
