| Biggest Cities in the World | 0 | - | 4.90 | 703,332 |
| Biggest City by Time Zone | 0 | - | 4.85 | 56,047 |
| Biggest City in Every Country | 0 | - | 4.98 | 81,520 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 174,435 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 94,344 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 99,724 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 66,864 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 73,452 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 66,996 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 43,020 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,936 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 47,013 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,799 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 109,661 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 378,538 |
| Biggest Cities in the United States | 0 | - | 4.93 | 849,683 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 338,799 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 110,243 |
| Biggest Cities by Language | 0 | - | 4.95 | 216,511 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,391 |
| Most Populous World Capitals | 0 | - | 4.94 | 162,421 |
| Biggest European Cities by Century | 0 | - | 4.98 | 120,601 |
| Megacities on a World Map | 0 | - | 4.98 | 223,804 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 523,351 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,944 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,752 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 92,130 |
| Biggest City in Each U.S. State | 0 | - | 4.86 | 153,440 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 156,798 |
| Biggest Cities in Asia | 0 | - | 4.94 | 98,307 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 44,481 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,830 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 43,092 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,502 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 68,618 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 203,449 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 122,783 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 310,070 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 100,407 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,303 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 43,392 |
| Biggest City by Region | 0 | - | 4.50 | 34,065 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 54,063 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,686 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 78,042 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,456 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 139,918 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,635 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 144,641 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,792 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 105,211 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 70,960 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.87 | 101,256 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,847 |
| Biggest Cities in Europe | 0 | - | 4.75 | 489,923 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 137,540 |
| Biggest City by Island | 0 | - | 4.57 | 46,130 |
| Biggest Cities in History | 0 | - | 4.50 | 81,918 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,578 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,685 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,706 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,654 |
| Biggest Cities in France - Extreme | 0 | - | 4.90 | 45,592 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 65,178 |
| Biggest Cities in Germany | 0 | - | 4.95 | 268,221 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 114,160 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 108,438 |
| Biggest Cities Starting With H | 0 | - | 4.57 | 99,368 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 112,358 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 131,042 |
| Biggest Cities Starting With P | 0 | - | 4.48 | 116,435 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,684 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,261 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,153 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,394 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,446 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,237 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 30,467 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,157 |
| Countries with Megacities | 0 | - | 4.99 | 202,017 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,521 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,031 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,340 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,963 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,273 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 39,613 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,871 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 79,461 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,329,556 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,530 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 69,648 |
| Biggest Mediterranean Cities | 0 | - | 4.58 | 87,302 |
| Largest Nordic Cities on a Map | 0 | - | 4.82 | 30,810 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,645 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,702 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 83,207 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,979 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 150,512 |
| Biggest Cities Starting With C | 0 | - | 4.08 | 98,139 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 80,054 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 116,679 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 117,958 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 118,164 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,491 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,472 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,647 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,293 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,330 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 51,380 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 100,714 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 61,125 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,575 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 154,867 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,367 |
| Flags to Largest Cities | 0 | - | 4.55 | 33,033 |
| Biggest World Cities A-Z | 0 | - | 4.57 | 206,145 |
| Largest World Cities With Four Letters | 0 | - | 4.38 | 43,606 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 67,692 |
| Demographics Multiple Choice | 0 | - | 4.66 | 40,223 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 120,381 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,356 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 63,236 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,864 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,420 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 37,526 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,691 |
| Countries of Europe by Population | 0 | - | 4.98 | 131,491 |
| Most Populous Countries by Year | 0 | - | 4.81 | 95,879 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,407 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 98,466 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 84,837 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 95,129 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 73,037 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,592 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 62,097 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.47 | 46,780 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 29,240 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 37,226 |
| Cities in Squares on a Map - North America | 0 | - | 4.32 | 19,748 |
| Biggest Cities in Japan | 0 | - | 4.66 | 76,707 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,656 |
| Biggest Cities in France | 0 | - | 4.72 | 203,357 |
| Biggest Cities in Spain | 0 | - | 4.55 | 156,387 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 51,223 |
| Biggest Cities in Poland | 0 | - | 4.57 | 49,113 |
| Biggest Cities in the UK | 0 | - | 4.46 | 95,225 |
| Biggest Cities in China | 0 | - | 4.55 | 141,877 |
| Cities of Ireland | 0 | - | 4.49 | 46,155 |
| Biggest Cities in Canada | 0 | - | 4.66 | 122,501 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 44,147 |
| Biggest Cities in India | 0 | - | 4.71 | 63,331 |
| Biggest Cities in Italy | 0 | - | 4.66 | 221,564 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.40 | 89,557 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 75,485 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.30 | 83,911 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.08 | 89,544 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 71,244 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.22 | 66,860 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 61,145 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 68,466 |
| Biggest U.S. Cities A-Z | 0 | - | 4.71 | 132,812 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 207,898 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 110,978 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,386 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 77,035 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 54,274 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 67,672 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 88,237 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 154,781 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 148,437 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 78,973 |
| Boundary Waters | 0 | - | 4.93 | 82,054 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 76,476 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 52,615 |
| Most Populous Islands | 0 | - | 4.71 | 114,353 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,550 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 209,649 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 164,220 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 160,611 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 82,415 |
| Countries by Population Decrease | 0 | - | 4.43 | 47,026 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.92 | 90,750 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 148,068 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 50,446 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 65,644 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.88 | 15,818 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,934 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,889 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 75,250 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.36 | 30,365 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,679 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.48 | 21,210 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 49,220 |
| Biggest Cities in Mexico | 0 | - | 4.51 | 34,990 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 66,869 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 41,847 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 23,004 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,591 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,559 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,800,572 |
