| Biggest Cities in the World | 0 | - | 4.92 | 789,789 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,060 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,572 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,557 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,720 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,773 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,839 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,419 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,463 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,416 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,498 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 52,999 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,114 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,691 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,621 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,456 |
| Biggest Cities in the United States | 0 | - | 4.93 | 965,869 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,614 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 572,911 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,322 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,768 |
| Largest City by Island | 0 | - | 4.87 | 70,986 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,338 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,463 |
| Biggest European Cities by Century | 0 | - | 4.98 | 141,473 |
| Megacities on a World Map | 0 | - | 4.98 | 250,742 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,749 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,802 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,584 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 167,083 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,527 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,887 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,914 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,202 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,533 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,810 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,428 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,257 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 40,709 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,371 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,509 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,075 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,369 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,513 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,726 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,198 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,411 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,966 |
| Countries with Megacities | 0 | - | 4.99 | 246,448 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,880 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,778 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,344 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,737 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,863 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,889 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,671 |
| Biggest City by Region | 0 | - | 4.50 | 35,982 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,882 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,190 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,409 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,202 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,004 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,211 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,899 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,653 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,697 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,396 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,482 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,244 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,766 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,794 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,803 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,433 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,532 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,196 |
| Biggest Cities in Europe | 0 | - | 4.70 | 541,851 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,630 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 124,128 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,785 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,091 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 169,764 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,320 |
| Biggest Cities in History | 0 | - | 4.52 | 89,083 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,100 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,167 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,175 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,220 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,928 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 96,946 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,025 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,450 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,920 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,550 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,857 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,096 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,947 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,872 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,121 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,643 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,077 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,107 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,234 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,831 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,344 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,518 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,246 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,843 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,971 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,659 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,461 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,086 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,012 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,188 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,850 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,269 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,376 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,221 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,204 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,555 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,520 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,754 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,149 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,056 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,023 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,812 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,893 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,754 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,941 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,789 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,324 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,105 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,566 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,535 |
| Most Populous Islands | 0 | - | 4.78 | 121,939 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,194 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,399 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,596 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,828 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,897 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,275 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,460 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,601 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,739 |
| Flags to Largest Cities | 0 | - | 4.55 | 50,745 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,837 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,279 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 161,704 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,554 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,597 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 125,711 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,393 |
| 20 Random Country Flags | 0 | - | 4.99 | 603,913 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,366 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,913 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,199 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.61 | 65,303 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,583 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,845 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,182 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,676 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,595 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,868 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 40,159 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,528 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,751 |
| Strongest Nation Brands | 0 | - | 4.50 | 37,323 |
| World Map Without 20 Random Countries | 0 | - | 4.99 | 8,219,894 |
| Boundary Waters | 0 | - | 4.92 | 88,022 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,794 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,222 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,209 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,802 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 99,405 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,631 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 83,964 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 72,736 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,450 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,219 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,399 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,321 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,749 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 31,912 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 175,749 |
| Biggest Cities in Japan | 0 | - | 4.67 | 82,488 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,002 |
| Biggest Cities in France | 0 | - | 4.69 | 221,923 |
| Biggest Cities in Spain | 0 | - | 4.63 | 169,738 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 55,619 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,423 |
| Biggest Cities in the UK | 0 | - | 4.48 | 104,099 |
| Biggest Cities in China | 0 | - | 4.53 | 156,904 |
| Biggest Cities in Canada | 0 | - | 4.54 | 131,761 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 46,939 |
| Biggest Cities in India | 0 | - | 4.70 | 67,304 |
| Biggest Cities in Italy | 0 | - | 4.75 | 239,350 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,676,828 |
| Random European Capital to Country | 0 | - | 4.98 | 189,122 |
| Random European Country to Capital | 0 | - | 4.92 | 147,379 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,312 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,354 |
