| Biggest Cities in the World | 0 | - | 4.92 | 789,306 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,035 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,479 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,438 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,533 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,691 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,641 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,345 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,405 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,243 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,418 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 52,947 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,063 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,645 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,572 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,287 |
| Biggest Cities in the United States | 0 | - | 4.93 | 965,149 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,493 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 572,652 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,230 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,695 |
| Largest City by Island | 0 | - | 4.87 | 70,951 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,247 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,405 |
| Biggest European Cities by Century | 0 | - | 4.98 | 135,452 |
| Megacities on a World Map | 0 | - | 4.98 | 250,348 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,721 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,758 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,493 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 167,008 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,477 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 122,845 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,770 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,101 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,510 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,645 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,342 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,222 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 40,662 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,101 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,484 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,041 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,285 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,460 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,665 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,608 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,139 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,881 |
| Countries with Megacities | 0 | - | 4.99 | 246,233 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,799 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,744 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,267 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,680 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,842 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,881 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,648 |
| Biggest City by Region | 0 | - | 4.50 | 35,971 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,869 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,133 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,367 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,146 |
| Northernmost Major City by Country | 0 | - | 4.56 | 32,995 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,203 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,887 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,610 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,627 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,317 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,450 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,233 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,731 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,713 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,758 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,407 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,494 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,158 |
| Biggest Cities in Europe | 0 | - | 4.70 | 541,588 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,612 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,036 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,747 |
| Biggest Cities in Germany | 0 | - | 4.95 | 290,984 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 169,674 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,279 |
| Biggest Cities in History | 0 | - | 4.52 | 89,047 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,060 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,157 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,149 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,160 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,918 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 96,881 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,006 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,399 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,874 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,394 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,803 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,039 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,906 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,717 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,053 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,629 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,069 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,091 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,174 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,766 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,299 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,476 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,228 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,830 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,966 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,652 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,456 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,069 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 90,992 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,171 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,816 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,257 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,311 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,167 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,186 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,510 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,489 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,724 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,106 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,001 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 168,966 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,723 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,815 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,693 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,902 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,766 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,271 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,057 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,539 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,471 |
| Most Populous Islands | 0 | - | 4.78 | 121,913 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,191 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,392 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,587 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,802 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,860 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,256 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,442 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,550 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,726 |
| Flags to Largest Cities | 0 | - | 4.55 | 50,716 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,831 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,187 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 161,631 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,510 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,560 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 125,672 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,350 |
| 20 Random Country Flags | 0 | - | 4.99 | 603,573 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,358 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,874 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,177 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.61 | 65,293 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,540 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,838 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,138 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,663 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,586 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,865 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 40,145 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,512 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,693 |
| Strongest Nation Brands | 0 | - | 4.50 | 37,309 |
| World Map Without 20 Random Countries | 0 | - | 4.99 | 8,215,521 |
| Boundary Waters | 0 | - | 4.92 | 87,993 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,787 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,182 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,137 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,766 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 99,371 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,621 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 83,942 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 72,687 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,427 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,192 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,379 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,313 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,733 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 31,901 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 175,724 |
| Biggest Cities in Japan | 0 | - | 4.67 | 82,461 |
| Biggest Cities in Russia | 0 | - | 4.49 | 81,983 |
| Biggest Cities in France | 0 | - | 4.69 | 221,819 |
| Biggest Cities in Spain | 0 | - | 4.63 | 169,678 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 55,603 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,401 |
| Biggest Cities in the UK | 0 | - | 4.48 | 104,065 |
| Biggest Cities in China | 0 | - | 4.53 | 156,843 |
| Biggest Cities in Canada | 0 | - | 4.54 | 131,711 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 46,932 |
| Biggest Cities in India | 0 | - | 4.70 | 67,284 |
| Biggest Cities in Italy | 0 | - | 4.75 | 239,279 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,676,147 |
| Random European Capital to Country | 0 | - | 4.98 | 189,069 |
| Random European Country to Capital | 0 | - | 4.92 | 147,338 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,282 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,332 |
