| Biggest Cities in the World | 0 | - | 4.90 | 701,589 |
| Biggest City by Time Zone | 0 | - | 4.85 | 55,880 |
| Biggest City in Every Country | 0 | - | 4.98 | 81,271 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 173,945 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 94,130 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 99,433 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 66,680 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 73,257 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 66,837 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,962 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,786 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,618 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 109,320 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 377,776 |
| Biggest Cities in the United States | 0 | - | 4.93 | 847,888 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 338,318 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 110,121 |
| Biggest Cities by Language | 0 | - | 4.95 | 216,228 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,334 |
| Most Populous World Capitals | 0 | - | 4.94 | 161,989 |
| Biggest European Cities by Century | 0 | - | 4.98 | 120,248 |
| Megacities on a World Map | 0 | - | 4.98 | 223,558 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 522,246 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,811 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,625 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 91,560 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 153,218 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 156,590 |
| Biggest Cities in Asia | 0 | - | 4.94 | 98,039 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 44,382 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,690 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 42,954 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,429 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 68,542 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 202,957 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 122,524 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.98 | 309,302 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 100,000 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,245 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 43,361 |
| Biggest City by Region | 0 | - | 4.50 | 34,031 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,969 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,643 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 77,906 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,400 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 139,518 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,457 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 144,287 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,701 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 104,927 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 70,792 |
| 500 Biggest US Cities | 0 | - | 4.88 | 100,911 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,702 |
| Biggest Cities in Europe | 0 | - | 4.75 | 485,860 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 137,388 |
| Biggest City by Island | 0 | - | 4.57 | 46,092 |
| Biggest Cities in History | 0 | - | 4.50 | 81,777 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,509 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,527 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,498 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,554 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 45,353 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 65,089 |
| Biggest Cities in Germany | 0 | - | 4.95 | 267,606 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 113,956 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 108,287 |
| Biggest Cities Starting With H | 0 | - | 4.57 | 99,208 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 112,145 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 130,799 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 116,222 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,626 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,216 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,137 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,364 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,427 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,203 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 30,326 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 128,860 |
| Countries with Megacities | 0 | - | 4.99 | 201,608 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,139 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,851 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 98,081 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,742 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 252,700 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 39,496 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,781 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 79,072 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,327,752 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,147 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 69,570 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 87,238 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,562 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,646 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 82,966 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,960 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 150,287 |
| Biggest Cities Starting With C | 0 | - | 4.08 | 98,016 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 79,927 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 116,285 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 117,749 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 118,039 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,356 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,163 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,497 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,217 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,146 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 51,287 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 100,540 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 61,047 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,474 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 154,630 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,341 |
| Flags to Largest Cities | 0 | - | 4.55 | 32,929 |
| Biggest World Cities A-Z | 0 | - | 4.57 | 205,737 |
| Largest World Cities With Four Letters | 0 | - | 4.38 | 43,557 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 67,621 |
| Demographics Multiple Choice | 0 | - | 4.66 | 40,182 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 120,260 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,311 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 63,055 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,817 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,368 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 37,454 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,599 |
| Countries of Europe by Population | 0 | - | 4.98 | 130,990 |
| Most Populous Countries by Year | 0 | - | 4.81 | 95,664 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,326 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 98,287 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 84,401 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 94,992 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 72,844 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 86,881 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,560 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 62,033 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.50 | 41,621 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 29,173 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 37,093 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,702 |
| Biggest Cities in Japan | 0 | - | 4.65 | 76,605 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,562 |
| Biggest Cities in France | 0 | - | 4.71 | 202,732 |
| Biggest Cities in Spain | 0 | - | 4.55 | 156,095 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 51,103 |
| Biggest Cities in Poland | 0 | - | 4.57 | 48,997 |
| Biggest Cities in the UK | 0 | - | 4.46 | 95,039 |
| Biggest Cities in China | 0 | - | 4.55 | 141,456 |
| Cities of Ireland | 0 | - | 4.43 | 40,281 |
| Biggest Cities in Canada | 0 | - | 4.66 | 122,248 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 44,083 |
| Biggest Cities in India | 0 | - | 4.71 | 63,237 |
| Biggest Cities in Italy | 0 | - | 4.66 | 221,133 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.40 | 89,379 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 75,336 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.30 | 83,742 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.08 | 89,391 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 71,127 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.22 | 66,714 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 61,078 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 68,408 |
| Biggest U.S. Cities A-Z | 0 | - | 4.71 | 132,683 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 207,620 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 110,834 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,319 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,948 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 54,215 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 67,591 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 88,125 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 154,541 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 148,223 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.97 | 78,845 |
| Boundary Waters | 0 | - | 4.93 | 81,977 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 76,306 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 52,496 |
| Most Populous Islands | 0 | - | 4.71 | 114,221 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,527 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 209,278 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 163,932 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 160,320 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 82,270 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,970 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.92 | 90,653 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 147,894 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 50,354 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 65,537 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.87 | 15,645 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,905 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,835 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 75,165 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.39 | 30,325 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,657 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.48 | 21,170 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 49,146 |
| Biggest Cities in Mexico | 0 | - | 4.50 | 34,887 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.75 | 66,526 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 41,701 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 22,981 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,445 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,470 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,716,026 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.83 | 30,761 |
