| Biggest Cities in the World | 0 | - | 4.91 | 800,446 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,218 |
| Biggest City in Every Country | 0 | - | 4.98 | 100,946 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 225,700 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,649 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 134,598 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,065 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,715 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,502 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,188 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,096 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,238 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,770 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,841 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 130,970 |
| Biggest Cities in the United States | 0 | - | 4.94 | 980,406 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,631 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 579,119 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,994 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,885 |
| Largest City by Island | 0 | - | 4.87 | 72,015 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,120 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,137 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,701 |
| Megacities on a World Map | 0 | - | 4.98 | 255,163 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,472 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,122 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 115,053 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 168,634 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 346,476 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,468 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,267 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.93 | 50,188 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,642 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,146 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,489 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,550 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,980 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,606 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,697 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,028 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,618 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,493 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,484 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,658 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 82,790 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,991 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,368 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,432 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,700 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,555 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,028 |
| Biggest City by Region | 0 | - | 4.50 | 36,269 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,181 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,219 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,371 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,342 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,450 |
| Biggest Cities in Europe | 0 | - | 4.73 | 546,992 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,270 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,438 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,921 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,860 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,362 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,368 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,471 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 164,182 |
| Biggest Cities in History | 0 | - | 4.52 | 90,262 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 77,937 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,470 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,519 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,427 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,182 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,252 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,049 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,628 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,486 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,751 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,539 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,132 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,542 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,235 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,303 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,078 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,089 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,839 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,568 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,693 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,620 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,555 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,347 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 66,722 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,642 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,842 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,796 |
| Countries with Megacities | 0 | - | 4.99 | 264,367 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,658 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,421 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,925 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,489 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 107,863 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,796 |
| Biggest English Cities by Century | 0 | - | 4.91 | 106,439 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,758 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,990 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 110,194 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 94,241 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,942 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 223,294 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,915 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,400 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,187 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,728 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,395 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 75,556 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,023 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,868 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,114 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,092 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,527 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,694 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,193 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,747 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,500 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 64,051 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,018 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 90,211 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,038 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,880 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,048 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,440 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 37,990 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,607 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.46 | 73,167 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,896 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,606 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 44,231 |
| Largest Nordic Cities on a Map | 0 | - | 4.78 | 37,169 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 32,240 |
| Biggest Urban Areas in the UK | 0 | - | 4.43 | 176,412 |
| Biggest Cities in Japan | 0 | - | 4.68 | 83,193 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,489 |
| Biggest Cities in France | 0 | - | 4.70 | 224,310 |
| Biggest Cities in Spain | 0 | - | 4.63 | 171,372 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 56,060 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,986 |
| Biggest Cities in the UK | 0 | - | 4.48 | 105,384 |
| Biggest Cities in China | 0 | - | 4.53 | 158,922 |
| Biggest Cities in Canada | 0 | - | 4.54 | 133,006 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 47,281 |
| Biggest Cities in India | 0 | - | 4.64 | 67,817 |
| Biggest Cities in Italy | 0 | - | 4.77 | 241,386 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 139,336 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,247,290 |
| Flags of Asia Quiz | 0 | - | 4.99 | 615,322 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,305 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,818 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,900 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,287 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,684 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,665 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,099 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,292 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,455 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,958 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,852 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 60,271 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 79,328 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,866 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,485 |
| Biggest Cities in Brazil | 0 | - | 4.56 | 53,194 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 39,395 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.36 | 102,231 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.16 | 107,462 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 85,595 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 80,648 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.39 | 33,767 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.04 | 67,544 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.28 | 73,518 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 81,731 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,174 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,454 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,283 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,877 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,317 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,620 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,382 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,854 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,860 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,246 |
| Every Country Shape | 0 | - | 5.00 | 467,072 |
| Countries that Start with C - Shape Quiz | 0 | - | 4.89 | 99,434 |
| Countries that Start with I - Shape Quiz | 0 | - | 4.86 | 114,227 |
| Countries that Start with A - Shape Quiz | 0 | - | 4.93 | 34,658 |
| Countries that Start with N - Shape Quiz | 0 | - | 4.94 | 82,899 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,133 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,292 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,204 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,654 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,228 |
