| Most Populous World Capitals | 0 | - | 4.94 | 174,491 |
| Biggest Cities in the World | 0 | - | 4.92 | 789,948 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,077 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,594 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,584 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,763 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,798 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,899 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,435 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,480 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,470 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,522 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,019 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,129 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,704 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,634 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,470 |
| Biggest Cities in the United States | 0 | - | 4.93 | 966,083 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,681 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,927 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,352 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,794 |
| Largest City by Island | 0 | - | 4.87 | 71,006 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,354 |
| Biggest European Cities by Century | 0 | - | 4.98 | 142,229 |
| Megacities on a World Map | 0 | - | 4.98 | 250,818 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 573,019 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,765 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,824 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,628 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 167,100 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,548 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,904 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,468 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,864 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,841 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,920 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,785 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,950 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,802 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,959 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,234 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,541 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,458 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,268 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 40,726 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,993 |
| Countries with Megacities | 0 | - | 4.99 | 246,516 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,913 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,796 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,366 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,754 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,516 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,093 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,390 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,525 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,736 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,451 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,462 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,880 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,890 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,676 |
| Biggest City by Region | 0 | - | 4.50 | 35,989 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,889 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,216 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,420 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,220 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,008 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,215 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,902 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,678 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,714 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,430 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,489 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,246 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,991 |
| Random European Capital to Country | 0 | - | 4.98 | 189,140 |
| Random European Country to Capital | 0 | - | 4.92 | 147,393 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,339 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,367 |
| Random African Capital to Country | 0 | - | 4.97 | 99,708 |
| Random African Country to Capital | 0 | - | 4.94 | 70,196 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,777 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,825 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,823 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,441 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,542 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,206 |
| Biggest Cities in Europe | 0 | - | 4.70 | 541,946 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,677,075 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,340 |
| Biggest Cities in History | 0 | - | 4.52 | 89,092 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,106 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,632 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 124,152 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,172 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,792 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,181 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 35,987 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,140 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,462 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,931 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,561 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,877 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,112 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,960 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,142 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,648 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,080 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,112 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,260 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,855 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,357 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,537 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,255 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,851 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,972 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,663 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,462 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,196 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,245 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,932 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 96,963 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,033 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 112,415 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,399 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,237 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,218 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,562 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,529 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,765 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,160 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,069 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,038 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,091 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,016 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,874 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,271 |
| Most Populous Islands | 0 | - | 4.78 | 121,953 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,196 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,399 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,601 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,337 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,835 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,114 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,909 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,290 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,466 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,577 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,616 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,741 |
| Flags to Largest Cities | 0 | - | 4.55 | 50,759 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,837 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,296 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 161,721 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,564 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,608 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 125,731 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,406 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,552 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,372 |
| Boundary Waters | 0 | - | 4.92 | 88,025 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,795 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,238 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,230 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,812 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,928 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,615 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,678 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 99,425 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,209 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.61 | 65,306 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,605 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,847 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,204 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,681 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,598 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,872 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 40,160 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,531 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,891,844 |
| Landlocked Countries | 0 | - | 4.99 | 413,287 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,108 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,633 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 83,971 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 72,741 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,460 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,226 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,404 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,322 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,754 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 31,918 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 175,764 |
| Biggest Cities in Japan | 0 | - | 4.67 | 82,499 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,006 |
| Biggest Cities in France | 0 | - | 4.69 | 221,953 |
| Biggest Cities in Spain | 0 | - | 4.63 | 169,758 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 55,630 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,428 |
| Biggest Cities in the UK | 0 | - | 4.48 | 104,114 |
