| Biggest Cities in the World | 0 | - | 4.92 | 789,179 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,445 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,402 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,484 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,645 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,577 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,317 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,381 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,210 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,400 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 52,936 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,052 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,629 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,551 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,249 |
| Biggest Cities in the United States | 0 | - | 4.93 | 964,971 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,460 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 572,554 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,200 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,674 |
| Largest City by Island | 0 | - | 4.87 | 70,938 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,213 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,394 |
| Biggest European Cities by Century | 0 | - | 4.98 | 131,855 |
| Megacities on a World Map | 0 | - | 4.98 | 250,216 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,709 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,742 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,463 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 166,982 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,588 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,710 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,074 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,506 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,325 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,211 |
| Flags to Largest Cities | 0 | - | 4.55 | 50,706 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,868 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,478 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,036 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,263 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,449 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,650 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,124 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,362 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,133 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,601 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,615 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,304 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,439 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,832 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,880 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,644 |
| Biggest City by Region | 0 | - | 4.50 | 35,964 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,863 |
| Northernmost Major City by Country | 0 | - | 4.56 | 32,995 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,201 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,884 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,232 |
| Biggest Cities in Europe | 0 | - | 4.70 | 541,519 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,603 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,015 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,741 |
| Biggest Cities in Germany | 0 | - | 4.95 | 290,943 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,459 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 122,839 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,255 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,271 |
| Biggest Cities in History | 0 | - | 4.52 | 89,037 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,048 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,152 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,143 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,141 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,915 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 96,865 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,000 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,378 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,859 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,322 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,781 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,022 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,888 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,007 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,826 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,963 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,649 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,455 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,167 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,253 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,067 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 90,983 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,802 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,456 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,038 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,855 |
| Countries with Megacities | 0 | - | 4.99 | 246,171 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,776 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,732 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,242 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,665 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,250 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,440 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,526 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,533 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,721 |
| Biggest U.S. Cities Starting with A | 0 | - | 4.43 | 109,212 |
| Biggest U.S. Cities Starting with B | 0 | - | 4.42 | 93,332 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,829 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,173 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 161,609 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,495 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,545 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 125,656 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,335 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,029 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,720 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,686 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,748 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,397 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,487 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,143 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,171 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.61 | 65,291 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,532 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,836 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,125 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,660 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,584 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,863 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 40,143 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,511 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 83,935 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 72,681 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,423 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,189 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,377 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,731 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 175,713 |
| Biggest Cities in Japan | 0 | - | 4.67 | 82,453 |
| Biggest Cities in Russia | 0 | - | 4.49 | 81,976 |
| Biggest Cities in France | 0 | - | 4.69 | 221,794 |
| Biggest Cities in Spain | 0 | - | 4.63 | 169,664 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 55,597 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,400 |
| Biggest Cities in the UK | 0 | - | 4.48 | 104,060 |
| Biggest Cities in China | 0 | - | 4.53 | 156,832 |
| Biggest Cities in Canada | 0 | - | 4.54 | 131,703 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 46,930 |
| Biggest Cities in India | 0 | - | 4.70 | 67,281 |
| Biggest Cities in Italy | 0 | - | 4.75 | 239,256 |
| Biggest U.S. Cities A-Z | 0 | - | 4.69 | 138,713 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,223,975 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,460 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,682 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,035 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,628 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,068 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,085 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,160 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,749 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,283 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,465 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,224 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,616 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 59,886 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 78,864 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,700 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,312 |
| Biggest Cities in Brazil | 0 | - | 4.56 | 52,683 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 38,922 |
| All Cities in China with Population of 1 Million | 0 | - | 4.80 | 45,283 |
| Biggest U.S. Cities Starting with C | 0 | - | 4.36 | 101,378 |
| Biggest U.S. Cities Starting with D | 0 | - | 4.15 | 106,413 |
| Biggest U.S. Cities Starting with M | 0 | - | 4.16 | 84,989 |
| Biggest U.S. Cities Starting with N | 0 | - | 4.17 | 80,050 |
| Biggest U.S. Cities Starting with O | 0 | - | 4.39 | 33,341 |
| Biggest U.S. Cities Starting with P | 0 | - | 4.04 | 67,162 |
| Biggest U.S. Cities Starting with L | 0 | - | 4.27 | 73,077 |
| Biggest U.S. Cities Starting with S | 0 | - | 4.37 | 81,278 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,291 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,145 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,179 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,499 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,478 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,712 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,090 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,031 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 903,428 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,230 |
| Every Country Shape | 0 | - | 5.00 | 457,962 |
| Countries that Start with C - Shape Quiz | 0 | - | 4.89 | 98,657 |
| Countries that Start with I - Shape Quiz | 0 | - | 4.86 | 113,349 |
| Countries that Start with A - Shape Quiz | 0 | - | 4.92 | 33,601 |
| Countries that Start with N - Shape Quiz | 0 | - | 4.94 | 82,198 |
| Countries that Start with P - Shape Quiz | 0 | - | 4.83 | 81,711 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 163,986 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 168,955 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,589 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,189 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,702 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,800 |
