| Biggest Cities in the World | 0 | - | 4.89 | 678,228 |
| Biggest City by Time Zone | 0 | - | 4.82 | 53,370 |
| Biggest City in Every Country | 0 | - | 4.97 | 77,509 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 167,208 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 90,785 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 94,431 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 57,680 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 70,128 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 64,168 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 41,982 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,028 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 367,171 |
| Biggest Cities in the United States | 0 | - | 4.92 | 808,077 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 320,692 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.88 | 108,137 |
| Biggest Cities by Language | 0 | - | 4.95 | 212,383 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 64,476 |
| Most Populous World Capitals | 0 | - | 4.92 | 146,538 |
| Biggest European Cities by Century | 0 | - | 4.97 | 117,689 |
| Megacities on a World Map | 0 | - | 4.98 | 219,052 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 508,592 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,385 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 62,711 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 82,941 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 149,963 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 153,684 |
| Biggest Cities in Asia | 0 | - | 4.94 | 94,969 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 42,919 |
| Megacities on an Empty Map | 0 | - | 4.96 | 86,775 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,090 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,074 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,066 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 197,364 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 108,276 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 301,329 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 96,107 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,306 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 42,876 |
| Biggest City by Region | 0 | - | 4.48 | 33,260 |
| Most Populous 2nd Cities | 0 | - | 4.72 | 52,999 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,208 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 67,674 |
| Ten Northernmost Megacities | 0 | - | 4.49 | 46,811 |
| Ten Southernmost Megacities | 0 | - | 4.80 | 45,990 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 136,116 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 108,800 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 130,558 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 43,659 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 90,736 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 68,849 |
| 500 Biggest US Cities | 0 | - | 4.85 | 96,220 |
| Biggest Cities in Europe | 0 | - | 4.75 | 457,188 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 135,688 |
| Biggest City by Island | 0 | - | 4.57 | 45,604 |
| Biggest Cities in History | 0 | - | 4.49 | 79,437 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 67,659 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 50,535 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,362 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 39,859 |
| Biggest Cities in France - Extreme | 0 | - | 4.88 | 42,939 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,279 |
| Biggest Cities in Germany | 0 | - | 4.94 | 260,760 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 111,078 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 106,156 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 96,718 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 109,549 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 127,501 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 113,507 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 69,919 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,842 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 26,960 |
| Biggest City by Region #2 | 0 | - | 4.45 | 22,874 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,127 |
| Northernmost Major City by Country | 0 | - | 4.55 | 30,669 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,337 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,050 |
| Countries with Megacities | 0 | - | 4.99 | 194,587 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,337 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,800 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,603 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,664 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 244,892 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 36,992 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 74,616 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,301,560 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,439 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,047 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,319 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,214 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.64 | 36,469 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 27,986 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 80,155 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,745 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 146,725 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,153 |
| Biggest Cities Starting With K | 0 | - | 4.29 | 78,205 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 113,790 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 115,359 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,252 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,309 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,320 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,191 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,469 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,380 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,453 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.44 | 59,974 |
| Biggest English Cities by Century | 0 | - | 4.89 | 98,969 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 151,036 |
| Biggest Cities by Trait #2 | 0 | - | 4.37 | 14,067 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 192,144 |
| Most Populous Country by First Two Letters | 0 | - | 4.73 | 66,424 |
| Demographics Multiple Choice | 0 | - | 4.66 | 39,540 |
| Biggest European Cities by Letter | 0 | - | 4.64 | 118,061 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.59 | 62,712 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,496 |
| U.S. States by Second Most Populous City | 0 | - | 4.44 | 40,037 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,777 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.79 | 51,737 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,522 |
| Countries of Europe by Population | 0 | - | 4.98 | 124,473 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,246 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 95,588 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 74,416 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 92,548 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 64,415 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,072 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.43 | 61,256 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,628 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 27,755 |
| Flags to Largest Cities | 0 | - | 4.57 | 30,766 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,457 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,200 |
| Biggest Cities in Japan | 0 | - | 4.65 | 74,878 |
| Biggest Cities in Russia | 0 | - | 4.49 | 75,908 |
| Biggest Cities in France | 0 | - | 4.76 | 197,440 |
| Biggest Cities in Spain | 0 | - | 4.50 | 152,180 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 49,659 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,622 |
| Biggest Cities in the UK | 0 | - | 4.45 | 92,535 |
| Biggest Cities in China | 0 | - | 4.64 | 136,859 |
| Cities of Ireland | 0 | - | 4.43 | 39,435 |
| Biggest Cities in Canada | 0 | - | 4.67 | 119,528 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,245 |
| Biggest Cities in India | 0 | - | 4.72 | 61,920 |
| Biggest Cities in Italy | 0 | - | 4.65 | 215,325 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.36 | 82,811 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.36 | 69,308 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.28 | 77,622 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.10 | 83,272 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.15 | 65,736 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.23 | 61,494 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.22 | 59,760 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 67,172 |
| Biggest U.S. Cities A-Z | 0 | - | 4.59 | 121,648 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 203,964 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 108,800 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 68,178 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 75,612 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,317 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,542 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,257 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 142,776 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 139,155 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 70,253 |
| Boundary Waters | 0 | - | 4.93 | 80,443 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 73,754 |
| Most Populous Islands | 0 | - | 4.71 | 111,991 |
| Islands by Largest City #1 | 0 | - | 4.48 | 81,933 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 203,312 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 159,357 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 155,946 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 79,908 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,254 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.89 | 83,968 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 144,814 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 49,018 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 63,771 |
| Biggest Nordic Cities | 0 | - | 4.37 | 59,516 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 55,993 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.71 | 74,118 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.40 | 29,832 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 42,360 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 28,575 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 20,529 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 48,027 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.74 | 63,408 |
| All Cities in China with Population of 1 Million | 0 | - | 4.77 | 37,832 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 40,445 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 22,663 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 161,095 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 31,717 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,432,374 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.82 | 29,781 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.75 | 92,411 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.88 | 50,318 |
| Largest Cities in Alexander's Empire | 0 | - | 4.56 | 38,482 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.37 | 36,805 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.24 | 89,078 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 52,366 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.59 | 24,320 |
