| Biggest Cities in the World | 0 | - | 4.91 | 793,713 |
| Biggest City by Time Zone | 0 | - | 4.88 | 67,119 |
| Biggest City in Every Country | 0 | - | 4.98 | 99,339 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 223,199 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 109,402 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 131,614 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,978 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,909 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 79,069 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,399 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,484 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 57,011 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 67,057 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 129,225 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 415,259 |
| Biggest Cities in the United States | 0 | - | 4.93 | 971,507 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,761 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 127,436 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,289 |
| Largest City by Island | 0 | - | 4.87 | 71,372 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 70,579 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,930 |
| Biggest European Cities by Century | 0 | - | 4.99 | 144,927 |
| Megacities on a World Map | 0 | - | 4.98 | 252,241 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 575,301 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,010 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 74,333 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 113,515 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 167,686 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,388 |
| Biggest Cities in Asia | 0 | - | 4.95 | 116,093 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,715 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 343,446 |
| Megacities on an Empty Map | 0 | - | 4.97 | 117,243 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,552 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,679 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,268 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,180 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,094 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 114,346 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,184 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,980 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,832 |
| Biggest City by Region | 0 | - | 4.50 | 36,057 |
| Most Populous 2nd Cities | 0 | - | 4.77 | 56,990 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,099 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,276 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 83,065 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,316 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,253 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,506 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,691 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,769 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,748 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 79,004 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,220 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,036 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,811 |
| Biggest Cities in Europe | 0 | - | 4.70 | 543,545 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,617 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,759 |
| Biggest Cities in History | 0 | - | 4.52 | 89,348 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,211 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,779 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 125,061 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,275 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,164 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,302 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,247 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,823 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 116,231 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,909 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 122,233 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,777 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 126,291 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,936 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,002 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,715 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,507 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,394 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,205 |
| Countries with Megacities | 0 | - | 4.99 | 248,794 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,056 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,513 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,427 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,459 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 95,038 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 45,696 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,041 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 97,747 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,306 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,540 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,748 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.73 | 73,243 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,153 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 49,282 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,389 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,814 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,875 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,176 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,968 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,812 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,075 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,754 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,400 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,253 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,847 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,295 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,061 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,066 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,610 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,490 |
| Biggest Cities in Latin America | 0 | - | 4.47 | 64,573 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,768 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 166,035 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,048 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 109,568 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 93,746 |
| Biggest World Cities A-Z | 0 | - | 4.62 | 222,246 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,952 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,937 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,727 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,160 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,390 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,392 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,904 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,562 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,827 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,711 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,264 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,708 |
| Countries of Europe by Population | 0 | - | 4.98 | 179,168 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,750 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,321 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,816 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,321 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,696 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,880 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,594 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,726 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 72,888 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,630 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,372 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,648 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,379 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,906 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 176,021 |
| Biggest Cities in Japan | 0 | - | 4.69 | 82,743 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,179 |
| Biggest Cities in France | 0 | - | 4.70 | 223,033 |
| Biggest Cities in Spain | 0 | - | 4.64 | 170,405 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 55,789 |
| Biggest Cities in Poland | 0 | - | 4.63 | 53,626 |
| Biggest Cities in the UK | 0 | - | 4.48 | 104,458 |
| Biggest Cities in China | 0 | - | 4.53 | 157,689 |
| Biggest Cities in Canada | 0 | - | 4.54 | 132,323 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 47,059 |
| Biggest Cities in India | 0 | - | 4.70 | 67,496 |
| Biggest Cities in Italy | 0 | - | 4.77 | 240,182 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.36 | 101,734 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.16 | 106,736 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 85,233 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 80,280 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.39 | 33,494 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.04 | 67,316 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.28 | 73,246 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 81,470 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 138,952 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,937 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,644 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,512 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,869 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,749 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,004 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,515 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,477 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,542 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,197 |
| Boundary Waters | 0 | - | 4.92 | 88,210 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,949 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,626 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,775 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 60,098 |
| Most Populous Islands | 0 | - | 4.79 | 122,184 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,233 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,446 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,678 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,568 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 192,418 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,321 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,692 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,005 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,769 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,998 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,423 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.84 | 23,138 |
| Biggest Nordic Cities | 0 | - | 4.36 | 61,500 |
| U.S. Cities by Hispanic Population | 0 | - | 4.31 | 38,136 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 60,033 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 79,045 |
