| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,900 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,774 |
| Biggest Cities in the World | 0 | - | 4.91 | 800,006 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,972 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,158 |
| Biggest City in Every Country | 0 | - | 4.98 | 100,857 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 225,564 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,583 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 134,421 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,005 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,674 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,127 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,016 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,195 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,721 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,789 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 130,788 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,303 |
| Biggest Cities in the United States | 0 | - | 4.94 | 979,861 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,504 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,306 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,309 |
| Largest City by Island | 0 | - | 4.87 | 71,976 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,082 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,091 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,659 |
| Megacities on a World Map | 0 | - | 4.98 | 255,001 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 578,883 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,442 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,077 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 114,952 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 168,562 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,030 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 162,995 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,409 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,198 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.93 | 50,164 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 346,263 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,568 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,110 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,723 |
| Countries with Megacities | 0 | - | 4.99 | 264,149 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,568 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,384 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,830 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,442 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,083 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,706 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,961 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,584 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,600 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,968 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,557 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,663 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,544 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,021 |
| Biggest City by Region | 0 | - | 4.50 | 36,256 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,172 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,212 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,366 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,327 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,437 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,826 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,032 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,019 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,493 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,643 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,160 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,445 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,436 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,593 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 82,556 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,949 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,274 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,391 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,439 |
| Biggest Cities in Europe | 0 | - | 4.73 | 546,836 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,889 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,278 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,072 |
| Biggest Cities in History | 0 | - | 4.52 | 90,240 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 77,787 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,085 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,836 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,563 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,253 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,345 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,450 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,672 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,873 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,504 |
| Biggest Cities in the Blue Banana | 0 | - | 4.57 | 36,441 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,770 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,455 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,721 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,510 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,082 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,513 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,208 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,167 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,770 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,665 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,591 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,025 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,260 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,429 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,941 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,115 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,414 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,259 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,845 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,294 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,601 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,341 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 77,672 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,041 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,081 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,245 |
| Flags to Languages | 0 | - | 4.95 | 173,798 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,553 |
| Top African Languages on a Map | 0 | - | 4.92 | 74,239 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 721,885 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,535 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,334 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 66,555 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,292 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,154 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,605 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,242 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 98,976 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,604 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,681 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 114,452 |
| Boundary Waters | 0 | - | 4.92 | 88,517 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,216 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,191 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,594 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,536 |
| Most Populous Islands | 0 | - | 4.80 | 122,983 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,315 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,551 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,115 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,038 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,503 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,232 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,855 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,501 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,411 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,266 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,061 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,484 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,978 |
| Colour in the Flag Map by Guessing Cities | 0 | - | 4.92 | 64,666 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,940 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,875 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,381 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,172 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,696 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,368 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,846 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,701 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 107,839 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,780 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,407 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,718 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,464 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 223,221 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,529,891 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,776 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,517 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,723 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,492 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 63,981 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 75,376 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,003 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 89,893 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,025 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,870 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,043 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,430 |
| Most Populous U.S. Cities as a Percent of Their State | 0 | - | 4.78 | 55,213 |
| Cities in European Economic Areas on a Map | 0 | - | 4.70 | 17,723 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,964 |
| Landlocked Countries | 0 | - | 4.99 | 421,312 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,166 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 574,926 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,669 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,948 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,552 |
| Population Trivia | 0 | - | 4.32 | 27,505 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,478 |
| World Capitals Quiz | 0 | - | 5.00 | 5,079,360 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,123 |
| Himalayan Countries | 0 | - | 4.95 | 138,422 |
| Andean Countries | 0 | - | 4.93 | 84,435 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,647 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,601 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,276 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,676 |
| Danube Countries | 0 | - | 4.97 | 71,929 |
