| Biggest Cities in the World | 0 | - | 4.90 | 702,988 |
| Biggest City by Time Zone | 0 | - | 4.85 | 56,012 |
| Biggest City in Every Country | 0 | - | 4.98 | 81,474 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 174,321 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 94,287 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 99,675 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 66,837 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 73,419 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 378,391 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 66,963 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 43,006 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,909 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 47,000 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,762 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 109,581 |
| Biggest Cities in the United States | 0 | - | 4.93 | 849,349 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 338,707 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 110,216 |
| Biggest Cities by Language | 0 | - | 4.95 | 216,454 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,382 |
| Most Populous World Capitals | 0 | - | 4.94 | 162,338 |
| Biggest European Cities by Century | 0 | - | 4.98 | 120,575 |
| Megacities on a World Map | 0 | - | 4.98 | 223,760 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 523,125 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,926 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,729 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 92,004 |
| Biggest City in Each U.S. State | 0 | - | 4.86 | 153,395 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 156,756 |
| Biggest Cities in Asia | 0 | - | 4.94 | 98,257 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 44,464 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,806 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 43,066 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 114,110 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 108,405 |
| Biggest Cities Starting With H | 0 | - | 4.57 | 99,330 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 112,295 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 130,971 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 116,377 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,492 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 68,598 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 203,368 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 122,735 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 309,942 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 100,325 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,294 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 43,386 |
| Biggest City by Region | 0 | - | 4.50 | 34,061 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 54,044 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 144,579 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,773 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 105,141 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,680 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 78,017 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 70,923 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.87 | 101,197 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,812 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,446 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 150,454 |
| Biggest Cities Starting With C | 0 | - | 4.08 | 98,102 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 80,024 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 116,429 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 117,888 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 139,878 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,598 |
| Biggest Cities in Europe | 0 | - | 4.75 | 489,621 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,655 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,657 |
| Biggest Cities in France - Extreme | 0 | - | 4.90 | 45,543 |
| Biggest Cities in Germany | 0 | - | 4.95 | 268,111 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 137,506 |
| Biggest City by Island | 0 | - | 4.57 | 46,121 |
| Biggest Cities in History | 0 | - | 4.50 | 81,892 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,563 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,639 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 30,444 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 65,163 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,676 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,253 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,151 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,387 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,444 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,229 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 39,593 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,860 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 79,376 |
| Largest Nordic Cities on a Map | 0 | - | 4.82 | 30,699 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,693 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,110 |
| Countries with Megacities | 0 | - | 4.99 | 201,937 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,459 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,991 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,297 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,930 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,172 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 69,637 |
| Biggest Mediterranean Cities | 0 | - | 4.58 | 87,289 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,627 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,329,234 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,456 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,551 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 83,148 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,974 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 100,687 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 61,113 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 154,824 |
| Flags to Largest Cities | 0 | - | 4.55 | 33,015 |
| Biggest World Cities A-Z | 0 | - | 4.57 | 206,043 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 118,136 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,470 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,429 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,607 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,280 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,299 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 51,361 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 120,363 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,347 |
| Largest World Cities With Four Letters | 0 | - | 4.38 | 43,595 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 63,205 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,857 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,407 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,364 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 37,514 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,674 |
| Countries of Europe by Population | 0 | - | 4.98 | 131,403 |
| Most Populous Countries by Year | 0 | - | 4.81 | 95,842 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 67,677 |
| Demographics Multiple Choice | 0 | - | 4.66 | 40,215 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,395 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 98,441 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 84,755 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 95,105 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 72,999 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,587 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 78,953 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 62,081 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.47 | 46,570 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 29,226 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 37,199 |
| Cities in Squares on a Map - North America | 0 | - | 4.32 | 19,737 |
| Biggest Cities in Japan | 0 | - | 4.66 | 76,696 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,638 |
| Biggest Cities in France | 0 | - | 4.71 | 203,075 |
| Biggest Cities in Spain | 0 | - | 4.55 | 156,330 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 51,204 |
| Biggest Cities in Poland | 0 | - | 4.57 | 49,088 |
| Biggest Cities in the UK | 0 | - | 4.46 | 95,193 |
| Biggest Cities in China | 0 | - | 4.55 | 141,801 |
| Cities of Ireland | 0 | - | 4.47 | 45,513 |
| Biggest Cities in Canada | 0 | - | 4.66 | 122,456 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 44,136 |
| Biggest Cities in India | 0 | - | 4.71 | 63,316 |
| Biggest Cities in Italy | 0 | - | 4.66 | 221,484 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.40 | 89,521 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 75,453 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.30 | 83,876 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.08 | 89,513 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 71,228 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.22 | 66,838 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 61,133 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 68,452 |
| Biggest U.S. Cities A-Z | 0 | - | 4.71 | 132,784 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 207,859 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 110,952 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,377 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 77,017 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 54,264 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 67,666 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 88,222 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 154,744 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 148,392 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,874 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 75,227 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,673 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 49,203 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 34,963 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.75 | 66,721 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 41,805 |
| Most Populous Islands | 0 | - | 4.71 | 114,324 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,547 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 209,582 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 164,158 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 160,565 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 82,391 |
| Countries by Population Decrease | 0 | - | 4.43 | 47,009 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.92 | 90,738 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 148,029 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 50,429 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 65,629 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.88 | 15,794 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,930 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.36 | 30,355 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.48 | 21,204 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 22,998 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,542 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,565 |
| Boundary Waters | 0 | - | 4.93 | 82,038 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 76,444 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.89 | 51,433 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.38 | 37,925 |
