| Biggest Cities in the World | 0 | - | 4.91 | 801,733 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,114 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,405 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,229 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 226,150 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,875 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 145,086 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,272 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,870 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,450 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,247 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,355 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,888 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,986 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 131,335 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,033 |
| Biggest Cities in the United States | 0 | - | 4.94 | 981,822 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,940 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,489 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,505 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,138 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,090 |
| Largest City by Island | 0 | - | 4.87 | 72,113 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,215 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,278 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,833 |
| Megacities on a World Map | 0 | - | 4.98 | 255,540 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 579,776 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,546 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,254 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 115,361 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 168,790 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,264 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,428 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,101 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,618 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,459 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,245 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 347,027 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,799 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,236 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,063 |
| Countries with Megacities | 0 | - | 4.99 | 264,962 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,888 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,570 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,154 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,641 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,106 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,203 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,043 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,669 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,941 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,171 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,807 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,788 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,580 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,059 |
| Biggest City by Region | 0 | - | 4.50 | 36,297 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,211 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,238 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,387 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,375 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,474 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,998 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,332 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,243 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,612 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,798 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,272 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,613 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,609 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,801 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 83,336 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,101 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,554 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,553 |
| Biggest Cities in Europe | 0 | - | 4.73 | 547,475 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,916 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,313 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 165,107 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,097 |
| Biggest Cities in History | 0 | - | 4.52 | 90,336 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 78,342 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,101 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,860 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,577 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,331 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,659 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.54 | 43,501 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,742 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,038 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,556 |
| Biggest Cities in the Blue Banana | 0 | - | 4.57 | 36,516 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,167 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,657 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,585 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,823 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,622 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,227 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,664 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,344 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,664 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,929 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,727 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,795 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,216 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,378 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,540 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,014 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,312 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,557 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,329 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,956 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,361 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,665 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,451 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,606 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,382 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 67,082 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,649 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,292 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,307 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,295 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 47,695 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,836 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 114,786 |
| Boundary Waters | 0 | - | 4.92 | 88,607 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,276 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,333 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,816 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,667 |
| Most Populous Islands | 0 | - | 4.80 | 123,088 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,330 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,581 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,452 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,314 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,760 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,407 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,889 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,607 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,576 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,334 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,199 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,555 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 32,012 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,952 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 163,020 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,478 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,253 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,987 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,495 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,951 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,742 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.64 | 107,928 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,840 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,520 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,895 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,551 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 223,490 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,629,030 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,883 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,623 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,815 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,518 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 64,200 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 75,839 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,033 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 90,826 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,069 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,904 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,065 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,451 |
| Most Populous U.S. Cities as a Percent of Their State | 0 | - | 4.78 | 55,276 |
| Cities in European Economic Areas on a Map | 0 | - | 4.70 | 17,842 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 38,036 |
| Landlocked Countries | 0 | - | 4.99 | 422,565 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,737 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,075 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,616 |
| Population Trivia | 0 | - | 4.32 | 27,524 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,504 |
| World Capitals Quiz | 0 | - | 5.00 | 5,086,863 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,813 |
| Himalayan Countries | 0 | - | 4.95 | 138,991 |
| Andean Countries | 0 | - | 4.93 | 84,776 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,003 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,073 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,590 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,914 |
| Danube Countries | 0 | - | 4.97 | 72,093 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,116 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,487 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,437 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,922 |
| European Landlocked Countries | 0 | - | 4.99 | 147,224 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,759 |
| Countries with the Most Species | 0 | - | 4.99 | 103,303 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,873 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,628 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,748 |
