| Biggest Cities in the World | 0 | - | 4.92 | 789,496 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,529 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,490 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,611 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,731 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,711 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,373 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,433 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,458 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 52,970 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,080 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,664 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,595 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,380 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,321 |
| Biggest Cities in the United States | 0 | - | 4.93 | 965,412 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,550 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,256 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,724 |
| Largest City by Island | 0 | - | 4.87 | 70,968 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,290 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,431 |
| Biggest European Cities by Century | 0 | - | 4.98 | 139,118 |
| Megacities on a World Map | 0 | - | 4.98 | 250,560 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 572,759 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,732 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,780 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,543 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 167,049 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,850 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,132 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,519 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,706 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,373 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,234 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,496 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,050 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,311 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,476 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,686 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,850 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,884 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,652 |
| Biggest City by Region | 0 | - | 4.50 | 35,977 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,878 |
| Northernmost Major City by Country | 0 | - | 4.56 | 32,997 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,208 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,891 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,235 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,496 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 122,859 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,155 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,380 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,160 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,627 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,649 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,349 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,465 |
| Biggest Cities in Europe | 0 | - | 4.70 | 541,684 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,212 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,289 |
| Biggest Cities in History | 0 | - | 4.52 | 89,059 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,083 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,620 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,073 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,162 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,762 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,160 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,021 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,425 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,895 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,501 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,825 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,063 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,921 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,835 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,969 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,656 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,457 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,179 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,908 |
| Countries with Megacities | 0 | - | 4.99 | 246,302 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,831 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,754 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,287 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,695 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,175 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,922 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 96,912 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,013 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,814 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,284 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,077 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 90,995 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,824 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,261 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,731 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,836 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 161,671 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,533 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,579 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 125,686 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,373 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,044 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,744 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,743 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,778 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,412 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,513 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,172 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,267 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,450 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,554 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,570 |
| Flags to Largest Cities | 0 | - | 4.55 | 50,731 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 109,232 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 93,344 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,227 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,559 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,866 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,635 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,071 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,185 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.61 | 65,297 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,840 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,153 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,667 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,590 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 40,150 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,517 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,781 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,085 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,091 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,189 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,784 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,312 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,487 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,236 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,627 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 72,718 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,437 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,207 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,384 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,317 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,742 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 175,730 |
| Biggest Cities in Japan | 0 | - | 4.67 | 82,473 |
| Biggest Cities in Russia | 0 | - | 4.49 | 81,986 |
| Biggest Cities in France | 0 | - | 4.69 | 221,848 |
| Biggest Cities in Spain | 0 | - | 4.63 | 169,703 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 55,609 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,410 |
| Biggest Cities in the UK | 0 | - | 4.48 | 104,072 |
| Biggest Cities in China | 0 | - | 4.53 | 156,858 |
| Biggest Cities in Canada | 0 | - | 4.54 | 131,733 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 46,936 |
| Biggest Cities in India | 0 | - | 4.70 | 67,288 |
| Biggest Cities in Italy | 0 | - | 4.75 | 239,299 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.36 | 101,404 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.15 | 106,427 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 85,000 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 80,062 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.39 | 33,350 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.04 | 67,169 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.27 | 73,087 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 81,287 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 138,727 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,340 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,188 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,194 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,533 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,499 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,736 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,131 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,026 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 168,986 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 83,948 |
| Boundary Waters | 0 | - | 4.92 | 88,002 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,790 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,196 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,161 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,779 |
| Most Populous Islands | 0 | - | 4.78 | 121,921 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,191 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,396 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,755 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,845 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,714 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,917 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,590 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,770 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,289 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,810 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,076 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,869 |
| Biggest Nordic Cities | 0 | - | 4.36 | 61,433 |
| U.S. Cities by Hispanic Population | 0 | - | 4.31 | 37,961 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 59,899 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 78,881 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,701 |
