| Most Populous World Capitals | 0 | - | 4.94 | 174,521 |
| Biggest Cities in the World | 0 | - | 4.92 | 790,151 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,100 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,621 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,624 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,837 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,823 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,969 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,464 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,498 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,536 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,556 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,040 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,147 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,725 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,660 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,500 |
| Biggest Cities in the United States | 0 | - | 4.93 | 966,347 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,719 |
| Countries of Europe by Population | 0 | - | 4.98 | 178,002 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,405 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,822 |
| Largest City by Island | 0 | - | 4.87 | 71,019 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,375 |
| Biggest European Cities by Century | 0 | - | 4.98 | 142,904 |
| Megacities on a World Map | 0 | - | 4.98 | 250,888 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 573,133 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,783 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,851 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,687 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 167,127 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,585 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,935 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,649 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,972 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,895 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,956 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,818 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,969 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,817 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,996 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,288 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,559 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,482 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,284 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 40,744 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,080 |
| Countries with Megacities | 0 | - | 4.99 | 246,690 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,013 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,872 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,433 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,792 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,527 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,111 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,432 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,553 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,769 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,742 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,547 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,898 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,897 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,690 |
| Biggest City by Region | 0 | - | 4.50 | 35,993 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,893 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,238 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,435 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,259 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,013 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,217 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,914 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,703 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,751 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,465 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,516 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,250 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 83,015 |
| Random European Capital to Country | 0 | - | 4.98 | 189,175 |
| Random European Country to Capital | 0 | - | 4.92 | 147,430 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,365 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,380 |
| Random African Capital to Country | 0 | - | 4.97 | 99,721 |
| Random African Country to Capital | 0 | - | 4.94 | 70,227 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,804 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,869 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,853 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,461 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,569 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,234 |
| Biggest Cities in Europe | 0 | - | 4.70 | 542,082 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,677,333 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,371 |
| Biggest Cities in History | 0 | - | 4.52 | 89,114 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,114 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,644 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,191 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,181 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,809 |
| Biggest World Cities in 1850 | 0 | - | 4.62 | 68,188 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 35,994 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,212 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,487 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,948 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,580 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,893 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,142 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,974 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,188 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,652 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,084 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,126 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,297 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,891 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,376 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,560 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,280 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,857 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,975 |
| 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 | 20,207 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,279 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,937 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 97,001 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,041 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 112,446 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,434 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,263 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,244 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,590 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,550 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,788 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,197 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,090 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,068 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,102 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,025 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,897 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,274 |
| Most Populous Islands | 0 | - | 4.79 | 121,969 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,199 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,401 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,606 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,367 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,840 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,129 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,919 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,302 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,470 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,584 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,634 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,745 |
| Flags to Largest Cities | 0 | - | 4.55 | 50,769 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,839 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,330 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 161,743 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,580 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,619 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 125,750 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,425 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,577 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,382 |
| Boundary Waters | 0 | - | 4.92 | 88,029 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,805 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,260 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,259 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,826 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,943 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,641 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,838 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 99,436 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,219 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.61 | 65,307 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,634 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,852 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,221 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,693 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,607 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,878 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 40,162 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,544 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,904,607 |
| Landlocked Countries | 0 | - | 4.99 | 413,434 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,119 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,640 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 83,989 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 72,752 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,467 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,237 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,420 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,325 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,770 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 31,921 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 175,779 |
| Biggest Cities in Japan | 0 | - | 4.67 | 82,512 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,016 |
| Biggest Cities in France | 0 | - | 4.69 | 221,996 |
| Biggest Cities in Spain | 0 | - | 4.63 | 169,802 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 55,640 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,438 |
| Biggest Cities in the UK | 0 | - | 4.48 | 104,132 |
