| Biggest Cities in the World | 0 | - | 4.91 | 799,002 |
| Biggest City by Time Zone | 0 | - | 4.88 | 67,974 |
| Biggest City in Every Country | 0 | - | 4.98 | 100,587 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 225,115 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,380 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 133,935 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 79,844 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,543 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,725 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 79,940 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 59,740 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,066 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,535 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,654 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 130,362 |
| Biggest Cities in the United States | 0 | - | 4.94 | 978,580 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,210 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 578,280 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,564 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,422 |
| Largest City by Island | 0 | - | 4.87 | 71,886 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,007 |
| Most Populous World Capitals | 0 | - | 4.94 | 175,975 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,543 |
| Megacities on a World Map | 0 | - | 4.98 | 254,589 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,357 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 74,957 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 114,707 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 168,405 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 345,770 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,265 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,020 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,098 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,430 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,999 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,915 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,538 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,404 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,821 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,371 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 159,331 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,315 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,443 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.90 | 81,534 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,826 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,885 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,264 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,580 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,089 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,990 |
| Biggest City by Region | 0 | - | 4.50 | 36,226 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,143 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,189 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,354 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 83,268 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,418 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 107,771 |
| Biggest Cities in Europe | 0 | - | 4.73 | 546,426 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,140 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,136 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,738 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,519 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 223,073 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,026 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,194 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 152,604 |
| Biggest Cities in History | 0 | - | 4.52 | 90,164 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 77,522 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,411 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,026 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,468 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,038 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,080 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,202 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 98,757 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,562 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,367 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,662 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,445 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,014 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,411 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,132 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,378 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,054 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,066 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,825 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,554 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,627 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,574 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,820 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,497 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,301 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 66,207 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 139,260 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,879 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,383 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,490 |
| Countries with Megacities | 0 | - | 4.99 | 263,500 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,337 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,267 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,625 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,300 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,756 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,306 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,611 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,948 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,394 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 110,084 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 94,153 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,931 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,780 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,332 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,136 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,606 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,284 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,897 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,723 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,833 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,917 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,400 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,552 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,091 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,663 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,472 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 63,752 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,990 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 88,510 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,976 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,838 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,400 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,918 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,506 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 73,103 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,829 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,558 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 44,002 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 37,094 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 32,194 |
| Biggest Urban Areas in the UK | 0 | - | 4.43 | 176,321 |
| Biggest Cities in Japan | 0 | - | 4.69 | 83,108 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,427 |
| Biggest Cities in France | 0 | - | 4.70 | 224,024 |
| Biggest Cities in Spain | 0 | - | 4.63 | 171,170 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 56,002 |
| Biggest Cities in Poland | 0 | - | 4.63 | 53,909 |
| Biggest Cities in the UK | 0 | - | 4.48 | 105,266 |
| Biggest Cities in China | 0 | - | 4.53 | 158,625 |
| Biggest Cities in Canada | 0 | - | 4.54 | 132,880 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 47,219 |
| Biggest Cities in India | 0 | - | 4.64 | 67,759 |
| Biggest Cities in Italy | 0 | - | 4.77 | 241,115 |
| Countries of Europe by Population | 0 | - | 4.98 | 180,845 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,639 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,864 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,257 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,614 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,453 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,908 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,168 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,321 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,894 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 60,203 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 79,255 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,844 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,470 |
| Biggest Cities in Brazil | 0 | - | 4.56 | 53,144 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 39,336 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.36 | 102,140 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.16 | 107,362 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 85,522 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 80,585 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.39 | 33,710 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.04 | 67,504 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.28 | 73,465 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 81,686 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,014 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,302 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,201 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,763 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,260 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,547 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,261 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,239 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,250 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,983 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,138 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,918 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 183,872 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,352 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,843 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,441 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,296 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,963 |
| Biggest Nordic Cities | 0 | - | 4.36 | 61,593 |
| U.S. Cities by Hispanic Population | 0 | - | 4.32 | 38,332 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.52 | 23,599 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 24,189 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,749 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,794 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,164 |
