| Biggest Cities in the World | 0 | - | 4.89 | 679,140 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 116,315 |
| Biggest City by Time Zone | 0 | - | 4.83 | 53,489 |
| Biggest City in Every Country | 0 | - | 4.97 | 77,660 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 167,503 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 90,916 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 94,625 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 62,619 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 70,282 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 367,548 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 64,296 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 42,029 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,099 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 54,468 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 105,063 |
| Biggest Cities in the United States | 0 | - | 4.92 | 808,934 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 320,940 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 509,111 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 108,202 |
| Biggest Cities by Language | 0 | - | 4.95 | 212,495 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 64,519 |
| Most Populous World Capitals | 0 | - | 4.92 | 146,715 |
| Biggest European Cities by Century | 0 | - | 4.97 | 117,775 |
| Megacities on a World Map | 0 | - | 4.98 | 219,177 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,438 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 62,776 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 83,076 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 150,108 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 136,212 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 108,884 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 153,785 |
| Biggest Cities in Asia | 0 | - | 4.94 | 95,061 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 42,978 |
| Megacities on an Empty Map | 0 | - | 4.96 | 86,859 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,159 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,114 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,111 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 197,533 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 108,398 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 301,610 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 96,224 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,302,502 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,605 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,205 |
| Countries with Megacities | 0 | - | 4.99 | 194,865 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,540 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,897 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,745 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,740 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,180 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,327 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 42,892 |
| Biggest City by Region | 0 | - | 4.49 | 33,415 |
| Most Populous 2nd Cities | 0 | - | 4.73 | 53,069 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 130,759 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 43,686 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 90,895 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,223 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 67,759 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 68,925 |
| 500 Biggest US Cities | 0 | - | 4.85 | 96,385 |
| Ten Northernmost Megacities | 0 | - | 4.49 | 46,829 |
| Ten Southernmost Megacities | 0 | - | 4.80 | 46,010 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,387 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,507 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,265 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,503 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,436 |
| Countries by Population Range - Tile Select | 0 | - | 4.86 | 50,027 |
| Biggest Cities in Europe | 0 | - | 4.75 | 458,224 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 50,573 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 90,435 |
| Biggest Cities in France - Extreme | 0 | - | 4.88 | 43,023 |
| Biggest Cities in Germany | 0 | - | 4.95 | 260,968 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.96 | 148,981 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 135,732 |
| Biggest City by Island | 0 | - | 4.57 | 45,612 |
| Biggest Cities in History | 0 | - | 4.49 | 79,518 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 67,697 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.50 | 39,890 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.90 | 28,399 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,305 |
| Biggest Cities in Sweden | 0 | - | 4.83 | 37,020 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 74,776 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 111,194 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 106,263 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 96,834 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 109,676 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 127,659 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 113,801 |
| Countries of Europe by Population | 0 | - | 4.98 | 124,647 |
| Most Populous Country by First Two Letters | 0 | - | 4.73 | 66,473 |
| Demographics Multiple Choice | 0 | - | 4.66 | 39,566 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,288 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 95,675 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 74,506 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 92,632 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 64,466 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 69,951 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,852 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 26,971 |
| Biggest City by Region #2 | 0 | - | 4.45 | 22,984 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,136 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,058 |
| Northernmost Major City by Country | 0 | - | 4.55 | 30,687 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,369 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,260 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.64 | 36,502 |
| Cities of China (With Some Help) | 0 | - | 4.86 | 28,006 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 204,062 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 108,871 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 68,210 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 75,667 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,345 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,582 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 86,315 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 142,860 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 139,230 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 203,477 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 159,483 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 156,066 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 79,959 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.89 | 84,164 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 144,924 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 63,837 |
| Biggest English Cities by Century | 0 | - | 4.89 | 99,017 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 161,173 |
| Most Populous Islands | 0 | - | 4.71 | 112,053 |
| Islands by Largest City #1 | 0 | - | 4.48 | 81,941 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,284 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 49,046 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 98,509 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.44 | 60,020 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 151,141 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 80,249 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,749 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 192,321 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 146,999 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 96,242 |
| Biggest Cities Starting With K | 0 | - | 4.29 | 78,281 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 113,893 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 115,447 |
| Random Flag to Country | 0 | - | 4.99 | 499,593 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.88 | 50,366 |
| Biggest European Cities by Letter | 0 | - | 4.65 | 118,118 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.64 | 62,740 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.49 | 55,536 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 40,075 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 33,793 |
| Biggest Cities by Trait #2 | 0 | - | 4.37 | 14,079 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.80 | 51,806 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 32,556 |
| Name a Valid European Capital | 0 | - | 4.92 | 103,468 |
| Strongest Nation Brands | 0 | - | 4.51 | 33,655 |
| World Map Without 20 Random Countries | 0 | - | 4.99 | 6,985,430 |
| Boundary Waters | 0 | - | 4.93 | 80,484 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 73,860 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 50,529 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.75 | 92,462 |
| Jewish Cities Quiz | 0 | - | 4.31 | 59,085 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.96 | 70,298 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.43 | 61,287 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.46 | 37,642 |
| Biggest Cities Near a Border | 0 | - | 4.20 | 27,902 |
| Flags to Largest Cities | 0 | - | 4.57 | 30,824 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 35,517 |
| Cities in Squares on a Map - North America | 0 | - | 4.36 | 19,209 |
| Biggest Cities in Japan | 0 | - | 4.66 | 74,919 |
| Biggest Cities in Russia | 0 | - | 4.49 | 75,943 |
| Biggest Cities in France | 0 | - | 4.76 | 197,718 |
| Biggest Cities in Spain | 0 | - | 4.50 | 152,311 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 49,709 |
| Biggest Cities in Poland | 0 | - | 4.56 | 47,663 |
| Biggest Cities in the UK | 0 | - | 4.45 | 92,611 |
| Biggest Cities in China | 0 | - | 4.64 | 137,043 |
| Cities of Ireland | 0 | - | 4.43 | 39,461 |
| Biggest Cities in Canada | 0 | - | 4.67 | 119,610 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 43,274 |
| Biggest Cities in India | 0 | - | 4.72 | 61,953 |
| Biggest Cities in Italy | 0 | - | 4.66 | 215,490 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,516,238 |
| Random European Capital to Country | 0 | - | 4.97 | 151,572 |
| Random European Country to Capital | 0 | - | 4.92 | 134,084 |
| Random Asian Country to Capital | 0 | - | 4.94 | 85,073 |
| Random Asian Capital to Country | 0 | - | 4.97 | 88,415 |
| Random African Capital to Country | 0 | - | 4.97 | 78,616 |
| Random African Country to Capital | 0 | - | 4.94 | 61,421 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,479,207 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 317,698 |
| Countries with Four Letters - Shape Quiz | 0 | - | 4.96 | 77,256 |
| Random Countries on the World Map | 0 | - | 5.00 | 1,316,290 |
| Countries that Beat Australia | 0 | - | 4.84 | 69,757 |
| Flag Coloring Book Puzzle #2 | 0 | - | 4.41 | 65,717 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.82 | 29,815 |
| World Geography on a Map #1 | 0 | - | 4.93 | 66,857 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 82,923 |
| Islands by Largest City #2 | 0 | - | 4.72 | 26,612 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 66,489 |
| Most Populous Countries by Year | 0 | - | 4.79 | 92,671 |
| Population Trivia | 0 | - | 4.35 | 26,227 |
