| Biggest Cities in the World | 0 | - | 4.91 | 794,074 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,427 |
| Biggest City by Time Zone | 0 | - | 4.88 | 67,166 |
| Biggest City in Every Country | 0 | - | 4.98 | 99,420 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 223,315 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 109,466 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 131,774 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 79,033 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,952 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 79,117 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,433 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,508 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 57,040 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 67,088 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 129,296 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 415,396 |
| Biggest Cities in the United States | 0 | - | 4.93 | 971,973 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,849 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,283 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,544 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 127,514 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,444 |
| Largest City by Island | 0 | - | 4.87 | 71,410 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 70,598 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,966 |
| Biggest European Cities by Century | 0 | - | 4.99 | 144,966 |
| Megacities on a World Map | 0 | - | 4.98 | 252,352 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 575,503 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,033 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 74,377 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 113,632 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 167,755 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,876 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,422 |
| Biggest Cities in Asia | 0 | - | 4.95 | 116,154 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,736 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 343,609 |
| Megacities on an Empty Map | 0 | - | 4.97 | 117,402 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,577 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,290 |
| Countries with Megacities | 0 | - | 4.99 | 248,973 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,142 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,554 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,492 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,509 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,999 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,858 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,701 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,284 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,242 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,142 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 114,401 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,212 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,992 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,845 |
| Biggest City by Region | 0 | - | 4.50 | 36,071 |
| Most Populous 2nd Cities | 0 | - | 4.77 | 57,004 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,106 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,287 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 83,078 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,322 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,274 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,905 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,332 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,087 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,089 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,632 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,730 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,803 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,792 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 79,025 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,277 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,092 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,839 |
| Biggest Cities in Europe | 0 | - | 4.70 | 543,705 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,733 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,166 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,812 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,943 |
| Biggest Cities in History | 0 | - | 4.52 | 89,430 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,217 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,008 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,719 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,512 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,798 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 125,130 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,282 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,403 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,205 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,314 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 36,199 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,329 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,857 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 116,253 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,939 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 122,260 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,807 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 126,312 |
| Countries of Europe by Population | 0 | - | 4.98 | 179,304 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,800 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,338 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,863 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,363 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,729 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,909 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,611 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,979 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,682 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,553 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 84,655 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,784 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,038 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,558 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,511 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,587 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.73 | 73,260 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,161 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 49,314 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 95,107 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 45,720 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,398 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,050 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 97,835 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 47,334 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,101 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 113,359 |
| Boundary Waters | 0 | - | 4.92 | 88,232 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,969 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,656 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,811 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 60,122 |
| Most Populous Islands | 0 | - | 4.80 | 122,239 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,240 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,456 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,759 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,622 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 192,474 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,360 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,701 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,025 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,804 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,012 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,453 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.84 | 23,163 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,822 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,881 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,211 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,988 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,831 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,103 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,788 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,950 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,505 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,508 |
| Biggest Cities in Latin America | 0 | - | 4.47 | 64,582 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,023 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,062 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,072 |
| Biggest World Cities A-Z | 0 | - | 4.62 | 222,291 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,166,722 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,263 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,170 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,414 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,398 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,981 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,908 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,591 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,837 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,718 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,944 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,276 |
| Cities in European Economic Areas on a Map | 0 | - | 4.69 | 17,296 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,726 |
| Landlocked Countries | 0 | - | 4.99 | 416,693 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,372 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,346 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,320 |
| Population Trivia | 0 | - | 4.32 | 27,452 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,382 |
| World Capitals Quiz | 0 | - | 5.00 | 5,050,837 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,956 |
| Himalayan Countries | 0 | - | 4.95 | 136,521 |
| Andean Countries | 0 | - | 4.95 | 83,498 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,762 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,012 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,432 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,032 |
| Danube Countries | 0 | - | 4.97 | 71,436 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,220 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,852 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,165 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,139 |
| European Landlocked Countries | 0 | - | 4.99 | 146,131 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,769 |
| Countries with the Most Species | 0 | - | 4.99 | 101,671 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,903 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,330 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,511 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,162 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,809 |
