| Biggest Cities in the World | 0 | - | 4.91 | 799,988 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,294 |
| Biggest Cities in the United States | 0 | - | 4.94 | 979,797 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,498 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,157 |
| Biggest City in Every Country | 0 | - | 4.98 | 100,854 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 225,561 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,581 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 134,412 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,004 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,673 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,124 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,011 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,194 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,713 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,785 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 130,788 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 578,858 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,900 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,770 |
| Largest City by Island | 0 | - | 4.87 | 71,975 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,081 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,089 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,657 |
| Megacities on a World Map | 0 | - | 4.98 | 254,996 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,442 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,075 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 114,951 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 168,558 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,407 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,193 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.93 | 50,163 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 346,258 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,565 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,108 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,517 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,961 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,584 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,595 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,966 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,555 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,445 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,434 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,590 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 82,544 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,943 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,272 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,387 |
| Biggest Cities in Europe | 0 | - | 4.73 | 546,829 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,662 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,543 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,021 |
| Biggest City by Region | 0 | - | 4.50 | 36,256 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,172 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,252 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,341 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,212 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,366 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,327 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,871 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,436 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,765 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,288 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,153 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,241 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 98,972 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,604 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,679 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 114,447 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 162,970 |
| Biggest Cities in History | 0 | - | 4.52 | 90,239 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 77,779 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,450 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,504 |
| Biggest Cities in the Blue Banana | 0 | - | 4.57 | 36,440 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,605 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,453 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,720 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,509 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,079 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,513 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,206 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,306 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,307 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,013 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,070 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,085 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,836 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,563 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,535 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,331 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,672 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 66,544 |
| U.S. State Flags | 0 | - | 4.88 | 170,860 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,407 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,063 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,702 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,720 |
| Countries with Megacities | 0 | - | 4.99 | 264,137 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,564 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,383 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,825 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,438 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 107,838 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,780 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,716 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 75,370 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,977 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 110,166 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 94,223 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,939 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 223,218 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,873 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,381 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,172 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,694 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,365 |
| Every European Country Shape | 0 | - | 4.96 | 202,000 |
| Every Asian Country Shape | 0 | - | 4.95 | 87,881 |
| Every African Country Shape | 0 | - | 4.90 | 87,492 |
| Country Flag-Shape Picture Quiz #1 | 0 | - | 4.94 | 94,935 |
| Country Flag-Shape Picture Quiz #2 | 0 | - | 4.89 | 72,927 |
| Country Flag-Shape Picture Quiz #4 | 0 | - | 4.96 | 71,818 |
| Country Flag-Shape Picture Quiz #6 | 0 | - | 4.98 | 69,805 |
| Country Flag-Shape Picture Quiz #5 | 0 | - | 4.97 | 61,898 |
| Country Flag-Shape Picture Quiz #7 | 0 | - | 4.96 | 58,974 |
| Europe Flags Map Quiz | 0 | - | 4.97 | 158,560 |
| Fill the World Map by Country Flags | 0 | - | 4.99 | 83,810 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,700 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,722 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,491 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,002 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 89,876 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,025 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,870 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,430 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,962 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,971 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,825 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,027 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,019 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,492 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,642 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,159 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 63,975 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,578 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.46 | 73,142 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,876 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,585 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,043 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 44,206 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 37,145 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 32,222 |
| Biggest Urban Areas in the UK | 0 | - | 4.43 | 176,382 |
| Biggest Cities in Japan | 0 | - | 4.69 | 83,171 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,469 |
| Biggest Cities in France | 0 | - | 4.70 | 224,218 |
| Biggest Cities in Spain | 0 | - | 4.63 | 171,309 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 56,044 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,966 |
| Biggest Cities in the UK | 0 | - | 4.48 | 105,348 |
| Biggest Cities in China | 0 | - | 4.53 | 158,849 |
| Biggest Cities in Canada | 0 | - | 4.54 | 132,972 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 47,253 |
| Biggest Cities in India | 0 | - | 4.64 | 67,797 |
| Biggest Cities in Italy | 0 | - | 4.77 | 241,293 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 139,308 |
| Random European Flag to Country | 0 | - | 4.89 | 182,741 |
| Random African Flag to Country | 0 | - | 4.88 | 75,031 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,161 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,769 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,664 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,586 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,025 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,259 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,427 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,941 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,841 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,478 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.36 | 102,209 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.16 | 107,432 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 85,572 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 80,630 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.39 | 33,754 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.04 | 67,532 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.28 | 73,507 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 81,720 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,115 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,412 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,259 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,838 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,294 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,600 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,338 |
| Countries that Start with C - Shape Quiz | 0 | - | 4.89 | 99,405 |
| Countries that Start with I - Shape Quiz | 0 | - | 4.86 | 114,207 |
| Countries that Start with A - Shape Quiz | 0 | - | 4.93 | 34,614 |
| Countries that Start with N - Shape Quiz | 0 | - | 4.94 | 82,865 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,079 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,242 |
