| Biggest Cities in the World | 0 | - | 4.90 | 704,094 |
| Biggest City by Time Zone | 0 | - | 4.85 | 56,137 |
| Biggest City in Every Country | 0 | - | 4.98 | 81,655 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 174,667 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 94,511 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 99,885 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 67,000 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.84 | 73,536 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 67,085 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 43,046 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 60,999 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 47,038 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 56,875 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 109,830 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 378,884 |
| Biggest Cities in the United States | 0 | - | 4.93 | 850,438 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 339,007 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 110,311 |
| Biggest Cities by Language | 0 | - | 4.95 | 216,640 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,414 |
| Most Populous World Capitals | 0 | - | 4.94 | 162,610 |
| Biggest European Cities by Century | 0 | - | 4.98 | 120,664 |
| Megacities on a World Map | 0 | - | 4.98 | 223,959 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 523,875 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 60,986 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 64,854 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 92,303 |
| Biggest City in Each U.S. State | 0 | - | 4.86 | 153,876 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 156,890 |
| Biggest Cities in Asia | 0 | - | 4.94 | 98,396 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 44,529 |
| Megacities on an Empty Map | 0 | - | 4.95 | 88,930 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 43,163 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 64,565 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 68,696 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 203,592 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 122,876 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 310,386 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 100,550 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 98,332 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 43,412 |
| Biggest City by Region | 0 | - | 4.50 | 34,088 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 54,103 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,701 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 78,131 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,470 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 140,026 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 111,727 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 144,921 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.84 | 44,822 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.91 | 105,334 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 71,025 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.87 | 101,367 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.82 | 53,910 |
| Biggest Cities in Europe | 0 | - | 4.75 | 490,591 |
| Biggest English-Speaking Cities | 0 | - | 4.43 | 137,596 |
| Biggest City by Island | 0 | - | 4.57 | 46,151 |
| Biggest Cities in History | 0 | - | 4.50 | 81,985 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,609 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 51,716 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 93,776 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 40,677 |
| Biggest Cities in France - Extreme | 0 | - | 4.90 | 45,687 |
| Biggest World Cities in 1850 | 0 | - | 4.64 | 65,225 |
| Biggest Cities in Germany | 0 | - | 4.95 | 268,454 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 114,256 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 108,511 |
| Biggest Cities Starting With H | 0 | - | 4.57 | 99,454 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 112,461 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 131,159 |
| Biggest Cities Starting With P | 0 | - | 4.48 | 116,524 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,709 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 39,280 |
| Biggest Coastal City by Country | 0 | - | 4.60 | 27,162 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,411 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,460 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,248 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 30,540 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,320 |
| Countries with Megacities | 0 | - | 4.99 | 202,214 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,684 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,124 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,478 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 66,071 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,540 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 39,669 |
| Biggest Cities in Sweden | 0 | - | 4.84 | 37,895 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 79,657 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,330,496 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,727 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 69,689 |
| Biggest Mediterranean Cities | 0 | - | 4.58 | 87,329 |
| Largest Nordic Cities on a Map | 0 | - | 4.82 | 30,948 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 37,682 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,720 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 83,307 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,984 |
| Biggest Cities Starting With B | 0 | - | 4.36 | 150,654 |
| Biggest Cities Starting With C | 0 | - | 4.08 | 98,202 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 80,110 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 116,771 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 118,058 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 118,243 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,586 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,621 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,719 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,350 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,419 |
| Countries by Population Range - Tile Select | 0 | - | 4.84 | 51,432 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 100,790 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 61,164 |
| Biggest English Cities by Century | 0 | - | 4.90 | 100,628 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 154,981 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,375 |
| Flags to Largest Cities | 0 | - | 4.55 | 33,080 |
| Biggest World Cities A-Z | 0 | - | 4.58 | 206,338 |
| Largest World Cities With Four Letters | 0 | - | 4.38 | 43,620 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 67,734 |
| Demographics Multiple Choice | 0 | - | 4.66 | 40,241 |
| Biggest European Cities by Letter | 0 | - | 4.66 | 120,443 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.65 | 63,391 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.50 | 63,325 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 40,898 |
| Biggest "Saint" Cities - United States | 0 | - | 4.47 | 34,446 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.45 | 37,559 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 33,737 |
| Countries of Europe by Population | 0 | - | 4.98 | 131,793 |
| Most Populous Countries by Year | 0 | - | 4.81 | 95,981 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 79,436 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 98,554 |
| Countries with the Most People Bordering Them | 0 | - | 4.97 | 85,015 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 95,202 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 73,123 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,611 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 62,127 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.47 | 46,953 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 29,274 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 37,285 |
| Cities in Squares on a Map - North America | 0 | - | 4.32 | 19,770 |
| Biggest Cities in Japan | 0 | - | 4.66 | 76,764 |
| Biggest Cities in Russia | 0 | - | 4.49 | 77,710 |
| Biggest Cities in France | 0 | - | 4.72 | 203,556 |
| Biggest Cities in Spain | 0 | - | 4.55 | 156,545 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 51,279 |
| Biggest Cities in Poland | 0 | - | 4.57 | 49,161 |
| Biggest Cities in the UK | 0 | - | 4.46 | 95,336 |
| Biggest Cities in China | 0 | - | 4.55 | 142,058 |
| Cities of Ireland | 0 | - | 4.49 | 46,630 |
| Biggest Cities in Canada | 0 | - | 4.66 | 122,602 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 44,175 |
| Biggest Cities in India | 0 | - | 4.71 | 63,385 |
| Biggest Cities in Italy | 0 | - | 4.70 | 221,779 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.40 | 89,638 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.39 | 75,566 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.30 | 83,993 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.08 | 89,633 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 71,322 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.22 | 66,926 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.23 | 61,191 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.27 | 68,498 |
| Biggest U.S. Cities A-Z | 0 | - | 4.71 | 132,873 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 208,027 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 111,052 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,429 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 77,092 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 54,310 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 67,709 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 88,286 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 154,877 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 148,546 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 79,009 |
| Boundary Waters | 0 | - | 4.93 | 82,092 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 76,571 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 52,680 |
| Most Populous Islands | 0 | - | 4.71 | 114,436 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,566 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 209,980 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 164,454 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 160,863 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.91 | 91,396 |
| Countries by Population Decrease | 0 | - | 4.43 | 47,052 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.92 | 90,898 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 148,141 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 50,488 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 65,703 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.88 | 15,895 |
| Biggest Nordic Cities | 0 | - | 4.38 | 59,954 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.70 | 56,918 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.70 | 75,291 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.36 | 30,384 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 42,687 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.49 | 21,242 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 49,258 |
| Biggest Cities in Mexico | 0 | - | 4.51 | 35,044 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.76 | 67,089 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 41,890 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 23,020 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,673 |
| Biggest Cities in North Carolina | 0 | - | 4.66 | 32,578 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,841,440 |
